2 * Copyright (c) 2016 Samsung Electronics Co., Ltd All Rights Reserved
4 * Licensed under the Apache License, Version 2.0 (the License);
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
8 * http://www.apache.org/licenses/LICENSE-2.0
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an AS IS BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
18 using System.Runtime.InteropServices;
20 internal static partial class Interop
22 internal static partial class Libdl
24 private const int RTLD_NOW = 2;
26 [DllImport(Libraries.Libdl)]
27 private static extern IntPtr dlopen(string filename, int flags);
29 [DllImport(Libraries.Libdl)]
30 private static extern int dlclose(IntPtr handle);
32 [DllImport(Libraries.Libdl)]
33 private static extern IntPtr dlsym(IntPtr handle, string symbol);
35 [DllImport(Libraries.Libdl)]
36 private static extern IntPtr dlerror();
38 internal static IntPtr LoadLibrary(string filename)
40 return dlopen(filename, RTLD_NOW);
43 internal static void FreeLibrary(IntPtr handle)
48 internal static IntPtr GetProcAddress(IntPtr handle, string name)
51 var res = dlsym(handle, name);
52 var errPtr = dlerror();
53 if (errPtr != IntPtr.Zero)
55 throw new Exception("dlsym : " + Marshal.PtrToStringAnsi(errPtr));