mirror of
https://github.com/Ryujinx/Ryujinx.git
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69 lines
1.9 KiB
C#
69 lines
1.9 KiB
C#
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using System;
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using System.Diagnostics.CodeAnalysis;
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using System.Runtime.CompilerServices;
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namespace Ryujinx.Common.Memory
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{
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/// <summary>
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/// Represents a pointer to an unmanaged resource.
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/// </summary>
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/// <typeparam name="T">Type of the unmanaged resource</typeparam>
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public unsafe struct Ptr<T> : IEquatable<Ptr<T>> where T : unmanaged
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{
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private IntPtr _ptr;
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/// <summary>
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/// Null pointer.
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/// </summary>
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public static Ptr<T> Null => new Ptr<T>() { _ptr = IntPtr.Zero };
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/// <summary>
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/// True if the pointer is null, false otherwise.
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/// </summary>
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public bool IsNull => _ptr == IntPtr.Zero;
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/// <summary>
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/// Gets a reference to the value.
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/// </summary>
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public ref T Value => ref Unsafe.AsRef<T>((void*)_ptr);
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/// <summary>
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/// Creates a new pointer to an unmanaged resource.
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/// </summary>
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/// <remarks>
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/// For data on the heap, proper pinning is necessary during
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/// use. Failure to do so will result in memory corruption and crashes.
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/// </remarks>
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/// <param name="value">Reference to the unmanaged resource</param>
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public Ptr(ref T value)
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{
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_ptr = (IntPtr)Unsafe.AsPointer(ref value);
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}
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public override bool Equals(object obj)
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{
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return obj is Ptr<T> other && Equals(other);
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}
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public bool Equals([AllowNull] Ptr<T> other)
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{
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return _ptr == other._ptr;
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}
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public override int GetHashCode()
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{
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return _ptr.GetHashCode();
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}
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public static bool operator ==(Ptr<T> left, Ptr<T> right)
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{
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return left.Equals(right);
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}
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public static bool operator !=(Ptr<T> left, Ptr<T> right)
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{
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return !(left == right);
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}
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}
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}
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