static Exception GetLastError()
{
if (IsWindows)
{
return(new Win32Exception(Marshal.GetLastWin32Error()));
}
else
{
IntPtr errorPtr;
if (IsLinux)
{
errorPtr = DynamicLinkingLinux.dlerror();
}
else if (IsMacOS)
{
errorPtr = DynamicLinkingMacOS.dlerror();
}
else
{
throw new Exception("Unsupported platform");
}
if (errorPtr == IntPtr.Zero)
{
return(new Exception("Error information could not be found"));
}
return(new Exception(Marshal.PtrToStringAnsi(errorPtr)));
}
}
public static TDelegate GetDelegate <TDelegate>(IntPtr libPtr, string symbolName)
{
IntPtr functionPtr;
if (IsWindows)
{
functionPtr = DynamicLinkingWindows.GetProcAddress(libPtr, symbolName);
}
else if (IsMacOS)
{
functionPtr = DynamicLinkingMacOS.dlsym(libPtr, symbolName);
}
else if (IsLinux)
{
functionPtr = DynamicLinkingLinux.dlsym(libPtr, symbolName);
}
else
{
throw new Exception("Unsupported platform");
}
if (functionPtr == IntPtr.Zero)
{
throw new Exception($"Library symbol failed, symbol: {symbolName}", GetLastError());
}
return(Marshal.GetDelegateForFunctionPointer <TDelegate>(functionPtr));
}
public static IntPtr LoadLib(string libPath)
{
IntPtr libPtr;
if (IsWindows)
{
libPtr = DynamicLinkingWindows.LoadLibrary(libPath);
}
else if (IsLinux)
{
const int RTLD_NOW = 2;
libPtr = DynamicLinkingLinux.dlopen(libPath, RTLD_NOW);
}
else if (IsMacOS)
{
const int RTLD_NOW = 2;
libPtr = DynamicLinkingMacOS.dlopen(libPath, RTLD_NOW);
}
else
{
throw new Exception(
$"Unsupported platform: {RuntimeInformation.OSDescription}. The supported platforms are: {string.Join(", ", new[] {OSPlatform.Windows, OSPlatform.OSX, OSPlatform.Linux})}");
}
if (libPtr == IntPtr.Zero)
{
throw new Exception($"Library loading failed, file: {libPath}", GetLastError());
}
return(libPtr);
}
public static void CloseLibrary(IntPtr lib)
{
if (lib == IntPtr.Zero)
{
return;
}
if (IsWindows)
{
DynamicLinkingWindows.FreeLibrary(lib);
}
else if (IsMacOS)
{
DynamicLinkingMacOS.dlclose(lib);
}
else if (IsLinux)
{
DynamicLinkingLinux.dlclose(lib);
}
else
{
throw new Exception("Unsupported platform");
}
}
