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/*
* 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;
}
}
}
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