#region License // // The Open Toolkit Library License // // Copyright (c) 2006 - 2009 the Open Toolkit library. // // Permission is hereby granted, free of charge, to any person obtaining a copy // of this software and associated documentation files (the "Software"), to deal // in the Software without restriction, including without limitation the rights to // use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of // the Software, and to permit persons to whom the Software is furnished to do // so, subject to the following conditions: // // The above copyright notice and this permission notice shall be included in all // copies or substantial portions of the Software. // // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, // EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES // OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND // NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT // HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, // WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING // FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR // OTHER DEALINGS IN THE SOFTWARE. // #endregion using System; using System.Collections.Generic; using System.Text; using System.Runtime.InteropServices; namespace OpenTK.Compute { #region struct Handle<T> struct Handle<T> : IEquatable<Handle<T>>, IComparable<Handle<T>> { #region Fields IntPtr handle; /// <summary> /// Gets a System.IntPtr that represents the handle of this ContextHandle. /// </summary> public IntPtr Value { get { return handle; } } /// <summary>A read-only field that represents a handle that has been initialized to zero.</summary> public static readonly Handle<T> Zero = new Handle<T>(IntPtr.Zero); #endregion #region Constructors /// <summary> /// Constructs a new instance with the specified handle. /// </summary> /// <param name="h">A System.IntPtr containing the value for this instance.</param> public Handle(IntPtr h) { handle = h; } #endregion #region Public Members #region ToString /// <summary> /// Converts this instance to its equivalent string representation. /// </summary> /// <returns>A System.String that contains the string representation of this instance.</returns> public override string ToString() { return Value.ToString(); } #endregion #region Equals /// <summary> /// Compares this instance to the specified object. /// </summary> /// <param name="obj">The System.Object to compare to.</param> /// <returns>True if obj is a ContextHandle that is equal to this instance; false otherwise.</returns> public override bool Equals(object obj) { if (obj is Handle<T>) return this.Equals((Handle<T>)obj); return false; } #endregion #region GetHashCode /// <summary> /// Returns the hash code for this instance. /// </summary> /// <returns>A System.Int32 with the hash code of this instance.</returns> public override int GetHashCode() { return Value.GetHashCode(); } #endregion #region public static explicit operator IntPtr(Handle<T> c) /// <summary> /// Converts the specified ContextHandle to the equivalent IntPtr. /// </summary> /// <param name="c">The ContextHandle to convert.</param> /// <returns>A System.IntPtr equivalent to the specified ContextHandle.</returns> public static explicit operator IntPtr(Handle<T> c) { return c != Handle<T>.Zero ? c.Value : IntPtr.Zero; } #endregion #region public static explicit operator Handle<T>(IntPtr p) /// <summary> /// Converts the specified IntPtr to the equivalent ContextHandle. /// </summary> /// <param name="p">The System.IntPtr to convert.</param> /// <returns>A ContextHandle equivalent to the specified IntPtr.</returns> public static explicit operator Handle<T>(IntPtr p) { return new Handle<T>(p); } #endregion /// <summary> /// Compares two instances for equality. /// </summary> /// <param name="left">The instance to compare.</param> /// <param name="right">The instance to compare to.</param> /// <returns>True if left is equal to right; false otherwise.</returns> public static bool operator ==(Handle<T> left, Handle<T> right) { return left.Equals(right); } /// <summary> /// Compares two instances for inequality. /// </summary> /// <param name="left">The instance to compare.</param> /// <param name="right">The instance to compare to.</param> /// <returns>True if left is not equal to right; false otherwise.</returns> public static bool operator !=(Handle<T> left, Handle<T> right) { return !left.Equals(right); } #endregion #region IComparable<Handle<T>> Members /// <summary> /// Compares the numerical value of this instance to other and returns a value indicating their relative order. /// </summary> /// <param name="other">The instance to compare to.</param> /// <returns>Less than 0, if this instance is less than other; 0 if both are equal; Greater than 0 if other is greater than this instance.</returns> public int CompareTo(Handle<T> other) { unsafe { return Value.ToInt64().CompareTo(other.Value.ToInt64()); } } #endregion #region IEquatable<Handle<T>> Members /// <summary> /// Compares this instance to the specified ContextHandle for equality. /// </summary> /// <param name="other">The ContextHandle to compare to.</param> /// <returns>True if this instance is equal to other; false otherwise.</returns> public bool Equals(Handle<T> other) { return Value == other.Value; } #endregion } #endregion }