public Delegate(IntPtr instancePtr, OSPlatform osPlatform)
{
Ptr = IntPtr.Zero;
Invoke = null;
Symbol = typeof(T).Name;
const string delegatePrefix = "_delegate";
if (Symbol.EndsWith(delegatePrefix, StringComparison.OrdinalIgnoreCase))
{
Symbol = Symbol.Substring(0, Symbol.Length - delegatePrefix.Length);
}
if (!osPlatform.IsSupportedOsVersion())
{
throw new PlatformNotSupportedException();
}
if (osPlatform == OSPlatform.Windows)
{
Ptr = NativeMethodsWindows.dlsym(instancePtr, Symbol);
}
else if (osPlatform == OSPlatform.Linux)
{
Ptr = NativeMethodsUnix.dlsym(instancePtr, Symbol);
}
if (Ptr == IntPtr.Zero)
{
throw new Exception(
$"Failed load function: {Symbol}. Last error: {Marshal.GetLastWin32Error()}.");
}
Invoke = Marshal.GetDelegateForFunctionPointer <T>(Ptr);
}
public CoreRunLib([JetBrains.Annotations.NotNull] ISnapFilesystem filesystem, OSPlatform osPlatform, [JetBrains.Annotations.NotNull] string workingDirectory)
{
if (filesystem == null)
{
throw new ArgumentNullException(nameof(filesystem));
}
if (workingDirectory == null)
{
throw new ArgumentNullException(nameof(workingDirectory));
}
if (!osPlatform.IsSupportedOsVersion())
{
throw new PlatformNotSupportedException();
}
_osPlatform = osPlatform;
var filename = filesystem.PathCombine(workingDirectory, "libcorerun-");
#if SNAP_BOOTSTRAP
return;
#endif
var rid = osPlatform.BuildRid();
if (osPlatform == OSPlatform.Windows)
{
filename += $"{rid}.dll";
_libPtr = NativeMethodsWindows.dlopen(filename);
}
else if (osPlatform == OSPlatform.Linux)
{
filename += $"{rid}.so";
_libPtr = NativeMethodsUnix.dlopen(filename, NativeMethodsUnix.libdl_RTLD_NOW | NativeMethodsUnix.libdl_RTLD_LOCAL);
}
if (_libPtr == IntPtr.Zero)
{
throw new FileNotFoundException($"Failed to load corerun: {filename}. " +
$"OS: {osPlatform}. " +
$"64-bit OS: {Environment.Is64BitOperatingSystem}. " +
$"Last error: {Marshal.GetLastWin32Error()}.");
}
// generic
pal_is_elevated = new Delegate <pal_is_elevated_delegate>(_libPtr, osPlatform);
pal_set_icon = new Delegate <pal_set_icon_delegate>(_libPtr, osPlatform);
// filesystem
pal_fs_chmod = new Delegate <pal_fs_chmod_delegate>(_libPtr, osPlatform);
pal_fs_file_exists = new Delegate <pal_fs_file_exists_delegate>(_libPtr, osPlatform);
}
public void Dispose()
{
if (_libPtr == IntPtr.Zero)
{
return;
}
void DisposeDelegates()
{
// generic
pal_is_elevated.Unref();
pal_set_icon.Unref();
// filesystem
pal_fs_chmod.Unref();
pal_fs_file_exists.Unref();
}
if (_osPlatform == OSPlatform.Windows)
{
NativeMethodsWindows.dlclose(_libPtr);
_libPtr = IntPtr.Zero;
DisposeDelegates();
return;
}
if (_osPlatform == OSPlatform.Linux)
{
NativeMethodsUnix.dlclose(_libPtr);
_libPtr = IntPtr.Zero;
DisposeDelegates();
return;
}
throw new PlatformNotSupportedException();
}
