public unsafe void LibraryNames()
{
var methods = typeof(LibC).GetMethods(BindingFlags.Static | BindingFlags.Public | BindingFlags.NonPublic);
foreach (var method in methods)
{
DllImportAttribute dllImportAttribute = method.GetCustomAttribute <DllImportAttribute>();
if (dllImportAttribute != null)
{
string functionName = dllImportAttribute.EntryPoint;
string libName = dllImportAttribute.Value;
IntPtr libHandle = IntPtr.Zero;
lock (s_dlopened)
{
if (!s_dlopened.TryGetValue(libName, out libHandle))
{
fixed(byte *filename = Encoding.UTF8.GetBytes(libName))
{
libHandle = new IntPtr(LibC.dlopen(filename, LibC.RTLD_LAZY));
}
Assert.True(IntPtr.Zero != libHandle, $"Library not found: {libName}");
s_dlopened.Add(libName, libHandle);
}
}
fixed(byte *symbol = Encoding.UTF8.GetBytes(functionName))
{
IntPtr symbolHandle = new IntPtr(LibC.dlsym(libHandle.ToPointer(), symbol));
Assert.True(IntPtr.Zero != symbolHandle, $"Function symbol not found in {libName}: {functionName}");
}
}
}
}
private static IntPtr dlopen(string libraryName, int flags)
{
byte[] libNameBytes = Encoding.UTF8.GetBytes(libraryName);
fixed(byte *pName = libNameBytes)
{
return(new IntPtr(LibC.dlopen(pName, flags)));
}
}
private static IntPtr dlopen(string libraryName, int flags)
{
Console.WriteLine($"Open Library: {libraryName} {flags}");
byte[] libNameBytes = Encoding.UTF8.GetBytes(libraryName);
fixed(byte *pName = libNameBytes)
{
Console.WriteLine($"Found dlopen: {LibraryName} {flags}");
return(new IntPtr(LibC.dlopen(pName, flags)));
}
}