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//
// System.Threading.ThreadPool
//
// Author:
// Patrik Torstensson
// Dick Porter (dick@ximian.com)
// Maurer Dietmar (dietmar@ximian.com)
//
// (C) Ximian, Inc. http://www.ximian.com
// Copyright (C) 2004-2005 Novell, Inc (http://www.novell.com)
//
// Permission is hereby granted, free of charge, to any person obtaining
// a copy of this software and associated documentation files (the
// "Software"), to deal in the Software without restriction, including
// without limitation the rights to use, copy, modify, merge, publish,
// distribute, sublicense, and/or sell copies of the Software, and to
// permit persons to whom the Software is furnished to do so, subject to
// the following conditions:
//
// The above copyright notice and this permission notice shall be
// included in all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
// EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
// NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
// LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
// OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
// WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
//
using System.Collections;
using System.Globalization;
using System.Runtime.CompilerServices;
using System.Runtime.Remoting.Messaging;
using System.Security.Permissions;
namespace System.Threading {
#if NET_2_0
public static class ThreadPool {
#else
public sealed class ThreadPool {
private ThreadPool ()
{
/* nothing to do */
}
#endif
public static bool BindHandle (IntPtr osHandle)
{
return true;
}
[MethodImplAttribute(MethodImplOptions.InternalCall)]
public static extern void GetAvailableThreads (out int workerThreads, out int completionPortThreads);
[MethodImplAttribute(MethodImplOptions.InternalCall)]
public static extern void GetMaxThreads (out int workerThreads, out int completionPortThreads);
[MethodImplAttribute(MethodImplOptions.InternalCall)]
public static extern void GetMinThreads (out int workerThreads, out int completionPortThreads);
[MethodImplAttribute(MethodImplOptions.InternalCall)]
[SecurityPermission (SecurityAction.Demand, ControlThread=true)]
public static extern bool SetMinThreads (int workerThreads, int completionPortThreads);
public static bool QueueUserWorkItem (WaitCallback callback)
{
IAsyncResult ar = callback.BeginInvoke (null, null, null);
if (ar == null)
return false;
return true;
}
public static bool QueueUserWorkItem (WaitCallback callback, object state)
{
IAsyncResult ar = callback.BeginInvoke (state, null, null);
if (ar == null)
return false;
return true;
}
public static RegisteredWaitHandle RegisterWaitForSingleObject (WaitHandle waitObject,
WaitOrTimerCallback callBack,
object state,
int millisecondsTimeOutInterval,
bool executeOnlyOnce)
{
return RegisterWaitForSingleObject (waitObject, callBack, state,
(long) millisecondsTimeOutInterval, executeOnlyOnce);
}
public static RegisteredWaitHandle RegisterWaitForSingleObject (WaitHandle waitObject,
WaitOrTimerCallback callBack,
object state,
long millisecondsTimeOutInterval,
bool executeOnlyOnce)
{
if (millisecondsTimeOutInterval < -1)
throw new ArgumentOutOfRangeException ("timeout", "timeout < -1");
if (millisecondsTimeOutInterval > Int32.MaxValue)
throw new NotSupportedException ("Timeout is too big. Maximum is Int32.MaxValue");
TimeSpan timeout = new TimeSpan (0, 0, 0, 0, (int) millisecondsTimeOutInterval);
RegisteredWaitHandle waiter = new RegisteredWaitHandle (waitObject, callBack, state,
timeout, executeOnlyOnce);
QueueUserWorkItem (new WaitCallback (waiter.Wait), null);
return waiter;
}
public static RegisteredWaitHandle RegisterWaitForSingleObject (WaitHandle waitObject,
WaitOrTimerCallback callBack,
object state,
TimeSpan timeout,
bool executeOnlyOnce)
{
return RegisterWaitForSingleObject (waitObject, callBack, state,
(long) timeout.TotalMilliseconds, executeOnlyOnce);
}
[CLSCompliant(false)]
public static RegisteredWaitHandle RegisterWaitForSingleObject (WaitHandle waitObject,
WaitOrTimerCallback callBack,
object state,
uint millisecondsTimeOutInterval,
bool executeOnlyOnce)
{
return RegisterWaitForSingleObject (waitObject, callBack, state,
(long) millisecondsTimeOutInterval, executeOnlyOnce);
}
[SecurityPermission (SecurityAction.Demand, ControlEvidence=true, ControlPolicy=true)]
public static bool UnsafeQueueUserWorkItem (WaitCallback callback, object state)
{
// no stack propagation here (that's why it's unsafe and requires extra security permissions)
IAsyncResult ar = null;
try {
if (!ExecutionContext.IsFlowSuppressed ())
ExecutionContext.SuppressFlow (); // on current thread only
ar = callback.BeginInvoke (state, null, null);
}
finally {
if (ExecutionContext.IsFlowSuppressed ())
ExecutionContext.RestoreFlow ();
}
return (ar != null);
}
[MonoTODO("Not implemented")]
[SecurityPermission (SecurityAction.Demand, ControlEvidence=true, ControlPolicy=true)]
public static RegisteredWaitHandle UnsafeRegisterWaitForSingleObject (WaitHandle waitObject,
WaitOrTimerCallback callBack, object state, int millisecondsTimeOutInterval,
bool executeOnlyOnce)
{
throw new NotImplementedException ();
}
[MonoTODO("Not implemented")]
[SecurityPermission (SecurityAction.Demand, ControlEvidence=true, ControlPolicy=true)]
public static RegisteredWaitHandle UnsafeRegisterWaitForSingleObject (WaitHandle waitObject,
WaitOrTimerCallback callBack, object state, long millisecondsTimeOutInterval,
bool executeOnlyOnce)
{
throw new NotImplementedException ();
}
[MonoTODO("Not implemented")]
[SecurityPermission (SecurityAction.Demand, ControlEvidence=true, ControlPolicy=true)]
public static RegisteredWaitHandle UnsafeRegisterWaitForSingleObject (WaitHandle waitObject,
WaitOrTimerCallback callBack, object state, TimeSpan timeout,
bool executeOnlyOnce)
{
throw new NotImplementedException ();
}
[MonoTODO("Not implemented")]
[CLSCompliant (false)]
[SecurityPermission (SecurityAction.Demand, ControlEvidence=true, ControlPolicy=true)]
public static RegisteredWaitHandle UnsafeRegisterWaitForSingleObject (WaitHandle waitObject,
WaitOrTimerCallback callBack, object state, uint millisecondsTimeOutInterval,
bool executeOnlyOnce)
{
throw new NotImplementedException ();
}
}
}
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