52 lines
1.6 KiB
C#
52 lines
1.6 KiB
C#
using System;
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using System.Runtime.CompilerServices;
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using System.Runtime.ConstrainedExecution;
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using System.Runtime.InteropServices;
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namespace Foodsoft.Alpm
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{
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internal sealed class SafeListHandle<TParent> : SafeHandle where TParent: SafeHandle
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{
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internal TParent ParentHandle
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{
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[ReliabilityContract(Consistency.WillNotCorruptState, Cer.Success)]
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[PrePrepareMethod]
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get;
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} = null!;
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[ReliabilityContract(Consistency.WillNotCorruptState, Cer.MayFail)]
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[PrePrepareMethod]
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internal SafeListHandle(IntPtr listPtr, TParent parentHandle)
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: base(IntPtr.Zero, true)
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{
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var success = false;
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RuntimeHelpers.PrepareConstrainedRegions();
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try { }
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finally
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{
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parentHandle.DangerousAddRef(ref success);
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if (success)
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{
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ParentHandle = parentHandle;
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handle = listPtr;
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}
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}
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if (!success)
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throw new ObjectDisposedException(GetType().FullName);
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}
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[ReliabilityContract(Consistency.WillNotCorruptState, Cer.Success), PrePrepareMethod]
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protected override bool ReleaseHandle()
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{
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ParentHandle.DangerousRelease();
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return true;
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}
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public override bool IsInvalid
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{
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[ReliabilityContract(Consistency.WillNotCorruptState, Cer.Success), PrePrepareMethod]
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get => ParentHandle.IsInvalid;
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}
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}
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} |