private static T IntPtrToCallback <T>(IntPtr handle, bool unpinHandle) where T : class
{
if (PInvokeUtil.IsNull(handle))
{
return(null);
}
var gcHandle = GCHandle.FromIntPtr(handle);
try
{
return((T)gcHandle.Target);
}
catch (System.InvalidCastException e)
{
Debug.LogError("GC Handle pointed to unexpected type: " + gcHandle.Target.ToString() +
". Expected " + typeof(T));
throw e;
}
finally
{
if (unpinHandle)
{
gcHandle.Free();
}
}
}
internal static void UnpinCallbackHandle(IntPtr handle)
{
if (PInvokeUtil.IsNotNull(handle))
{
var gcHandle = GCHandle.FromIntPtr(handle);
gcHandle.Free();
}
}
private void Cleanup()
{
if (!PInvokeUtil.IsNull(mSelfPointer))
{
ReleaseHandle(mSelfPointer);
mSelfPointer = new HandleRef(this, IntPtr.Zero);
}
}
public virtual bool Equals(InteropObject other)
{
if (null == other)
{
return(false);
}
if (PInvokeUtil.IsNull(this.mSelfPointer))
{
return(PInvokeUtil.IsNull(other.mSelfPointer));
}
return(mSelfPointer.Handle == other.mSelfPointer.Handle && this.mIsDisposed == other.mIsDisposed);
}
/// <summary>
/// Creates a managed binding object for the unmanaged object referenced by the given pointer.
/// If such binding object exists, this method returns it instead of creating a new one.
/// Therefore using this method guarantees that the same managed binder is always returned
/// for the same native pointer.
/// </summary>
/// <returns>The binder for the given pointer, or null if the pointer is invalid.</returns>
/// <param name="pointer">Pointer.</param>
/// <param name="constructor">Constructor.</param>
public static T FromPointer(IntPtr pointer, Func <IntPtr, T> constructor)
{
if (PInvokeUtil.IsNull(pointer))
{
return(default(T));
}
// Check if an binder exists for this IntPtr and return it.
T binder = FindExistingBinder(pointer);
if (binder != default(T))
{
return(binder);
}
// Otherwise create a new binder, add it to the binders map and return it.
T newBinder = constructor(pointer);
RegisterNewBinder(pointer, newBinder);
return(newBinder);
}
public InteropObject(IntPtr pointer)
{
mSelfPointer = PInvokeUtil.CheckNonNull(new HandleRef(this, pointer));
AttachHandle(mSelfPointer);
}
protected bool IsDisposed()
{
return(PInvokeUtil.IsNull(mSelfPointer));
}
public bool IsDisposed()
{
return(PInvokeUtil.IsNull(mSelfPointer));
}