MegaBites-AI/Windows-powershell

1// Copyright (c) Microsoft Corporation.2// Licensed under the MIT License.3 4using System;5using System.Runtime.InteropServices;6 7namespace Microsoft.Powershell.Commands.GetCounter.PdhNative8{9    internal sealed class PdhSafeDataSourceHandle : SafeHandle10    {11        private PdhSafeDataSourceHandle() : base(IntPtr.Zero, true) { }12 13        public override bool IsInvalid14        {15            get16            {17                return handle == IntPtr.Zero;18            }19        }20 21        protected override bool ReleaseHandle()22        {23            return (PdhHelper.PdhCloseLog(handle, 0) == 0);24        }25    }26 27    internal sealed class PdhSafeQueryHandle : SafeHandle28    {29        private PdhSafeQueryHandle() : base(IntPtr.Zero, true) { }30 31        public override bool IsInvalid32        {33            get34            {35                return handle == IntPtr.Zero;36            }37        }38 39        protected override bool ReleaseHandle()40        {41            return (PdhHelper.PdhCloseQuery(handle) == 0);42        }43    }44 45    internal sealed class PdhSafeLogHandle : SafeHandle46    {47        private PdhSafeLogHandle() : base(IntPtr.Zero, true) { }48 49        public override bool IsInvalid50        {51            get52            {53                return handle == IntPtr.Zero;54            }55        }56 57        protected override bool ReleaseHandle()58        {59            return (PdhHelper.PdhCloseLog(handle, 0) == 0);60        }61    }62}63