2 // System.Threading.ThreadPool
6 // Dick Porter (dick@ximian.com)
7 // Maurer Dietmar (dietmar@ximian.com)
9 // (C) Ximian, Inc. http://www.ximian.com
10 // Copyright (C) 2004-2005 Novell, Inc (http://www.novell.com)
12 // Permission is hereby granted, free of charge, to any person obtaining
13 // a copy of this software and associated documentation files (the
14 // "Software"), to deal in the Software without restriction, including
15 // without limitation the rights to use, copy, modify, merge, publish,
16 // distribute, sublicense, and/or sell copies of the Software, and to
17 // permit persons to whom the Software is furnished to do so, subject to
18 // the following conditions:
20 // The above copyright notice and this permission notice shall be
21 // included in all copies or substantial portions of the Software.
23 // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
24 // EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
25 // MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
26 // NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
27 // LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
28 // OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
29 // WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
32 using System.Collections;
33 using System.Globalization;
34 using System.Runtime.CompilerServices;
35 using System.Runtime.Remoting.Messaging;
36 using System.Security.Permissions;
38 namespace System.Threading {
41 public static class ThreadPool {
43 public sealed class ThreadPool {
50 public static bool BindHandle (IntPtr osHandle)
55 [MethodImplAttribute(MethodImplOptions.InternalCall)]
56 public static extern void GetAvailableThreads (out int workerThreads, out int completionPortThreads);
58 [MethodImplAttribute(MethodImplOptions.InternalCall)]
59 public static extern void GetMaxThreads (out int workerThreads, out int completionPortThreads);
61 [MethodImplAttribute(MethodImplOptions.InternalCall)]
62 public static extern void GetMinThreads (out int workerThreads, out int completionPortThreads);
64 [MethodImplAttribute(MethodImplOptions.InternalCall)]
65 [SecurityPermission (SecurityAction.Demand, ControlThread=true)]
66 public static extern bool SetMinThreads (int workerThreads, int completionPortThreads);
68 public static bool QueueUserWorkItem (WaitCallback callback)
70 IAsyncResult ar = callback.BeginInvoke (null, null, null);
76 public static bool QueueUserWorkItem (WaitCallback callback, object state)
78 IAsyncResult ar = callback.BeginInvoke (state, null, null);
84 public static RegisteredWaitHandle RegisterWaitForSingleObject (WaitHandle waitObject,
85 WaitOrTimerCallback callBack,
87 int millisecondsTimeOutInterval,
90 return RegisterWaitForSingleObject (waitObject, callBack, state,
91 (long) millisecondsTimeOutInterval, executeOnlyOnce);
94 public static RegisteredWaitHandle RegisterWaitForSingleObject (WaitHandle waitObject,
95 WaitOrTimerCallback callBack,
97 long millisecondsTimeOutInterval,
100 if (millisecondsTimeOutInterval < -1)
101 throw new ArgumentOutOfRangeException ("timeout", "timeout < -1");
103 if (millisecondsTimeOutInterval > Int32.MaxValue)
104 throw new NotSupportedException ("Timeout is too big. Maximum is Int32.MaxValue");
106 TimeSpan timeout = new TimeSpan (0, 0, 0, 0, (int) millisecondsTimeOutInterval);
108 RegisteredWaitHandle waiter = new RegisteredWaitHandle (waitObject, callBack, state,
109 timeout, executeOnlyOnce);
110 QueueUserWorkItem (new WaitCallback (waiter.Wait), null);
114 public static RegisteredWaitHandle RegisterWaitForSingleObject (WaitHandle waitObject,
115 WaitOrTimerCallback callBack,
118 bool executeOnlyOnce)
120 return RegisterWaitForSingleObject (waitObject, callBack, state,
121 (long) timeout.TotalMilliseconds, executeOnlyOnce);
125 [CLSCompliant(false)]
126 public static RegisteredWaitHandle RegisterWaitForSingleObject (WaitHandle waitObject,
127 WaitOrTimerCallback callBack,
129 uint millisecondsTimeOutInterval,
130 bool executeOnlyOnce)
132 return RegisterWaitForSingleObject (waitObject, callBack, state,
133 (long) millisecondsTimeOutInterval, executeOnlyOnce);
136 [SecurityPermission (SecurityAction.Demand, ControlEvidence=true, ControlPolicy=true)]
137 public static bool UnsafeQueueUserWorkItem (WaitCallback callback, object state)
139 // no stack propagation here (that's why it's unsafe and requires extra security permissions)
140 IAsyncResult ar = null;
142 if (!ExecutionContext.IsFlowSuppressed ())
143 ExecutionContext.SuppressFlow (); // on current thread only
145 ar = callback.BeginInvoke (state, null, null);
148 if (ExecutionContext.IsFlowSuppressed ())
149 ExecutionContext.RestoreFlow ();
155 [SecurityPermission (SecurityAction.Demand, ControlEvidence=true, ControlPolicy=true)]
156 public static RegisteredWaitHandle UnsafeRegisterWaitForSingleObject (WaitHandle waitObject,
157 WaitOrTimerCallback callBack, object state, int millisecondsTimeOutInterval,
158 bool executeOnlyOnce)
160 throw new NotImplementedException ();
164 [SecurityPermission (SecurityAction.Demand, ControlEvidence=true, ControlPolicy=true)]
165 public static RegisteredWaitHandle UnsafeRegisterWaitForSingleObject (WaitHandle waitObject,
166 WaitOrTimerCallback callBack, object state, long millisecondsTimeOutInterval,
167 bool executeOnlyOnce)
169 throw new NotImplementedException ();
173 [SecurityPermission (SecurityAction.Demand, ControlEvidence=true, ControlPolicy=true)]
174 public static RegisteredWaitHandle UnsafeRegisterWaitForSingleObject (WaitHandle waitObject,
175 WaitOrTimerCallback callBack, object state, TimeSpan timeout,
176 bool executeOnlyOnce)
178 throw new NotImplementedException ();
182 [CLSCompliant (false)]
183 [SecurityPermission (SecurityAction.Demand, ControlEvidence=true, ControlPolicy=true)]
184 public static RegisteredWaitHandle UnsafeRegisterWaitForSingleObject (WaitHandle waitObject,
185 WaitOrTimerCallback callBack, object state, uint millisecondsTimeOutInterval,
186 bool executeOnlyOnce)
188 throw new NotImplementedException ();