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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namespace Foodsoft.Alpm
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{
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internal sealed class SafeCachePackageHandle : SafePackageHandle
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{
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internal SafeDatabaseHandle SafeDatabaseHandle
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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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internal SafeAlpmHandle SafeAlpmHandle => SafeDatabaseHandle.SafeAlpmHandle;
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[ReliabilityContract(Consistency.WillNotCorruptState, Cer.MayFail)]
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[PrePrepareMethod]
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internal SafeCachePackageHandle(IntPtr pkgPtr, SafeDatabaseHandle dbHandle)
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: base()
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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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dbHandle.DangerousAddRef(ref success);
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if (success)
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{
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handle = pkgPtr;
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SafeDatabaseHandle = dbHandle;
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}
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}
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if (!success) 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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SafeDatabaseHandle.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 => handle == IntPtr.Zero;
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}
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}
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} |