File size: 1,449 Bytes
8c763fb | 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 | // Copyright (c) Microsoft Corporation.
// Licensed under the MIT License.
using System;
using System.Runtime.InteropServices;
namespace Microsoft.Powershell.Commands.GetCounter.PdhNative
{
internal sealed class PdhSafeDataSourceHandle : SafeHandle
{
private PdhSafeDataSourceHandle() : base(IntPtr.Zero, true) { }
public override bool IsInvalid
{
get
{
return handle == IntPtr.Zero;
}
}
protected override bool ReleaseHandle()
{
return (PdhHelper.PdhCloseLog(handle, 0) == 0);
}
}
internal sealed class PdhSafeQueryHandle : SafeHandle
{
private PdhSafeQueryHandle() : base(IntPtr.Zero, true) { }
public override bool IsInvalid
{
get
{
return handle == IntPtr.Zero;
}
}
protected override bool ReleaseHandle()
{
return (PdhHelper.PdhCloseQuery(handle) == 0);
}
}
internal sealed class PdhSafeLogHandle : SafeHandle
{
private PdhSafeLogHandle() : base(IntPtr.Zero, true) { }
public override bool IsInvalid
{
get
{
return handle == IntPtr.Zero;
}
}
protected override bool ReleaseHandle()
{
return (PdhHelper.PdhCloseLog(handle, 0) == 0);
}
}
}
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