// Extracts and loads a resource with the base name into the same directory with the base output name
public static void LoadUnmanagedLibrary(string resourceBaseName, string outFile)
{
if (s_loadedLibs.ContainsKey(resourceBaseName))
{
return;
}
string resName = GetResourceName(resourceBaseName);
if (!s_resourceList.Contains(resName))
{
throw new Exception($"The native library {resourceBaseName} does not exist as an embedded resource.");
}
Stopwatch timer = Stopwatch.StartNew();
string outPath = Path.Combine(s_thisDir, outFile);
try
{
WriteResourceStream(resName, outPath);
}
catch (Exception)
{
throw;
}
IntPtr handle = IntPtr.Zero;
if (s_platform == PlatformOS.Windows)
{
handle = Kernel32.LoadLibrary(outPath);
if (handle == IntPtr.Zero)
{
int err = Marshal.GetLastWin32Error();
string errstr = (new Win32Exception(err)).Message;
throw new Exception(errstr);
}
}
else
{
handle = Dl.Open(outPath, Dl.RTLD_NOW);
if (handle == IntPtr.Zero)
{
IntPtr err = Dl.Error();
string errstr = Marshal.PtrToStringAuto(err);
throw new Exception(errstr);
}
}
if (s_loadedLibs.Count == 0)
{
// Unloads the libraries in the event of a crash (or the user forgets)
AppDomain.CurrentDomain.ProcessExit += (sender, e) => UnloadLibraries();
}
s_loadedLibs.Add(resourceBaseName, handle);
s_libPaths.Add(resourceBaseName, outPath);
LastLoadTime = timer.Elapsed;
}
// Extract the resource into the path and load it
private static void ExtractAndLoad(string name)
{
var rName = GetResourceName(name);
var rPath = Path.Combine(s_thisDir, $"{name}.nl");
// Extract
using (var reader = s_this.GetManifestResourceStream(rName))
{
using (var writer = File.Open(rPath, FileMode.Create, FileAccess.Write, FileShare.None))
{
reader.CopyTo(writer);
}
}
s_libPaths.Add(rPath);
// Load
var handle = (s_platform == PlatformOS.Windows) ? Kernel32.LoadLibrary(rPath) : Dl.Open(rPath, Dl.RTLD_NOW);
s_loadedLibs.Add(name, handle);
}