/// <summary>
///
/// </summary>
/// <param name="name"></param>
/// <param name="comparison"></param>
public Comparator(String name, Comparison <NativeArray> comparison)
{
GCHandle selfHandle = default;
try {
Byte[] utf = Encoding.UTF8.GetBytes(name);
this._NativeName = Marshal.AllocHGlobal(utf.Length + 1);
Marshal.Copy(utf, 0, this._NativeName, utf.Length);
this._Comparison = comparison;
selfHandle = GCHandle.Alloc(this);
this.Handle = LevelDBInterop.leveldb_comparator_create(
GCHandle.ToIntPtr(selfHandle),
Marshal.GetFunctionPointerForDelegate(_Destructor),
Marshal.GetFunctionPointerForDelegate(Compare),
Marshal.GetFunctionPointerForDelegate(_GetName));
if (this.Handle == IntPtr.Zero)
{
throw new ApplicationException("Failed to initialize LevelDB comparator");
}
}
catch {
if (selfHandle != default)
{
selfHandle.Free();
}
if (this._NativeName != IntPtr.Zero)
{
Marshal.FreeHGlobal(this._NativeName);
}
throw;
}
}
public IntPtr Init(string name, Func <NativeArray, NativeArray, int> cmp)
{
// TODO: Complete member initialization
this.cmp = cmp;
this.namePinned = GCHandle.Alloc(
Encoding.ASCII.GetBytes(name),
GCHandleType.Pinned);
var thisHandle = GCHandle.Alloc(this);
var chandle = LevelDBInterop.leveldb_comparator_create(
GCHandle.ToIntPtr(thisHandle),
Marshal.GetFunctionPointerForDelegate(destructor),
Marshal.GetFunctionPointerForDelegate(compare),
Marshal.GetFunctionPointerForDelegate(nameAccessor)
);
if (chandle == default(IntPtr))
{
thisHandle.Free();
}
return(chandle);
}