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src/Microsoft.PowerShell.CoreCLR.Eventing/DotNetCode/Eventing/Reader/CoTaskMemSafeHandle.cs
67 строк
2 KB
Steve Lee
Update copyright notice to latest guidance (#12190)
24 мар 2020, 21:08
Не верифицирован
24 мар 2020, 21:08
b7cb335
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// Copyright (c) Microsoft Corporation. // Licensed under the MIT License. /*============================================================ ** ** ** Purpose: ** This internal class is a SafeHandle implementation over a ** native CoTaskMem allocated via StringToCoTaskMemAuto. ** ============================================================*/ using System.Runtime.InteropServices; namespace System.Diagnostics.Eventing.Reader { // // Marked as SecurityCritical due to link demands from inherited // SafeHandle members. // [System.Security.SecurityCritical] internal sealed class CoTaskMemSafeHandle : SafeHandle { internal CoTaskMemSafeHandle() : base(IntPtr.Zero, true) { } internal void SetMemory(IntPtr handle) { SetHandle(handle); } internal IntPtr GetMemory() { return handle; } public override bool IsInvalid { get { return IsClosed || handle == IntPtr.Zero; } } protected override bool ReleaseHandle() { Marshal.FreeCoTaskMem(handle); handle = IntPtr.Zero; return true; } // // DONT compare CoTaskMemSafeHandle with CoTaskMemSafeHandle.Zero // use IsInvalid instead. Zero is provided where a NULL handle needed // public static CoTaskMemSafeHandle Zero { get { return new CoTaskMemSafeHandle(); } } } }