137 lines
4.6 KiB
C#
137 lines
4.6 KiB
C#
//
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// System.Threading.WaitHandle.cs
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//
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// Author:
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// Dick Porter (dick@ximian.com)
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// Gonzalo Paniagua Javier (gonzalo@ximian.com
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//
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// (C) 2002,2003 Ximian, Inc. (http://www.ximian.com)
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// Copyright (C) 2004-2005 Novell, Inc (http://www.novell.com)
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//
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// Permission is hereby granted, free of charge, to any person obtaining
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// a copy of this software and associated documentation files (the
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// "Software"), to deal in the Software without restriction, including
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// without limitation the rights to use, copy, modify, merge, publish,
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// distribute, sublicense, and/or sell copies of the Software, and to
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// permit persons to whom the Software is furnished to do so, subject to
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// the following conditions:
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//
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// The above copyright notice and this permission notice shall be
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// included in all copies or substantial portions of the Software.
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//
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// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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// EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
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// NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
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// LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
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// OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
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// WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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//
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using System;
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using System.Reflection;
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using System.Runtime.CompilerServices;
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using System.Runtime.Remoting.Contexts;
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using System.Security.Permissions;
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using System.Runtime.InteropServices;
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using Microsoft.Win32.SafeHandles;
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using System.Runtime.ConstrainedExecution;
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namespace System.Threading
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{
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[StructLayout (LayoutKind.Sequential)]
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public abstract partial class WaitHandle
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: MarshalByRefObject, IDisposable
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{
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protected static readonly IntPtr InvalidHandle = (IntPtr) (-1);
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static int WaitMultiple(WaitHandle[] waitHandles, int millisecondsTimeout, bool exitContext, bool WaitAll)
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{
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int release_last = -1;
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try {
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#if !DISABLE_REMOTING
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if (exitContext)
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SynchronizationAttribute.ExitContext ();
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#endif
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for (int i = 0; i < waitHandles.Length; ++i) {
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try {
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} finally {
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/* we have to put it in a finally block, to avoid having a ThreadAbortException
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* between the return from DangerousAddRef and the assignement to release_last */
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bool release = false;
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waitHandles [i].SafeWaitHandle.DangerousAddRef (ref release);
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release_last = i;
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}
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}
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if (WaitAll)
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return WaitAll_internal (waitHandles, millisecondsTimeout);
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else
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return WaitAny_internal (waitHandles, millisecondsTimeout);
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} finally {
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for (int i = release_last; i >= 0; --i) {
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waitHandles [i].SafeWaitHandle.DangerousRelease ();
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}
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#if !DISABLE_REMOTING
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if (exitContext)
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SynchronizationAttribute.EnterContext ();
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#endif
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}
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}
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[MethodImplAttribute(MethodImplOptions.InternalCall)]
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private static extern int WaitAll_internal(WaitHandle[] handles, int ms);
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[MethodImplAttribute(MethodImplOptions.InternalCall)]
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private static extern int WaitAny_internal(WaitHandle[] handles, int ms);
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static int WaitOneNative (SafeHandle waitableSafeHandle, uint millisecondsTimeout, bool hasThreadAffinity, bool exitContext)
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{
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bool release = false;
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try {
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#if !DISABLE_REMOTING
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if (exitContext)
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SynchronizationAttribute.ExitContext ();
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#endif
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waitableSafeHandle.DangerousAddRef (ref release);
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return WaitOne_internal (waitableSafeHandle.DangerousGetHandle (), (int) millisecondsTimeout);
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} finally {
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if (release)
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waitableSafeHandle.DangerousRelease ();
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#if !DISABLE_REMOTING
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if (exitContext)
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SynchronizationAttribute.EnterContext ();
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#endif
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}
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}
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[MethodImplAttribute(MethodImplOptions.InternalCall)]
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static extern int WaitOne_internal(IntPtr handle, int ms);
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static int SignalAndWaitOne (SafeWaitHandle waitHandleToSignal,SafeWaitHandle waitHandleToWaitOn, int millisecondsTimeout, bool hasThreadAffinity, bool exitContext)
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{
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bool releaseHandleToSignal = false, releaseHandleToWaitOn = false;
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try {
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waitHandleToSignal.DangerousAddRef (ref releaseHandleToSignal);
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waitHandleToWaitOn.DangerousAddRef (ref releaseHandleToWaitOn);
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return SignalAndWait_Internal (waitHandleToSignal.DangerousGetHandle (), waitHandleToWaitOn.DangerousGetHandle (), millisecondsTimeout);
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} finally {
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if (releaseHandleToSignal)
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waitHandleToSignal.DangerousRelease ();
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if (releaseHandleToWaitOn)
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waitHandleToWaitOn.DangerousRelease ();
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}
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}
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[MethodImplAttribute(MethodImplOptions.InternalCall)]
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static extern int SignalAndWait_Internal (IntPtr toSignal, IntPtr toWaitOn, int ms);
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}
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}
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