mcs/class/corlib/System.Threading/ThreadPool.cs

   1 //
   2 // System.Threading.ThreadPool
   3 //
   4 // Author:
   5 //   Patrik Torstensson
   6 //   Dick Porter (dick@ximian.com)
   7 //   Maurer Dietmar (dietmar@ximian.com)
   8 //
   9 // (C) Ximian, Inc.  http://www.ximian.com
  10 // Copyright (C) 2004-2005 Novell, Inc (http://www.novell.com)
  11 //
  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:
  19 //
  20 // The above copyright notice and this permission notice shall be
  21 // included in all copies or substantial portions of the Software.
  22 //
  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.
  30 //
  31
  32 using System.Collections;
  33 using System.Globalization;
  34 using System.Runtime.CompilerServices;
  35 using System.Security.Permissions;
  36
  37 namespace System.Threading {
  38
  39         public sealed class ThreadPool {
  40
  41                 private ThreadPool ()
  42                 {
  43                         /* nothing to do */
  44                 }
  45
  46                 public static bool BindHandle (IntPtr osHandle)
  47                 {
  48                         return true;
  49                 }
  50
  51                 [MethodImplAttribute(MethodImplOptions.InternalCall)]
  52                 public static extern void GetAvailableThreads (out int workerThreads, out int completionPortThreads);
  53
  54                 [MethodImplAttribute(MethodImplOptions.InternalCall)]
  55                 public static extern void GetMaxThreads (out int workerThreads, out int completionPortThreads);
  56
  57                 [MethodImplAttribute(MethodImplOptions.InternalCall)]
  58                 public static extern void GetMinThreads (out int workerThreads, out int completionPortThreads);
  59
  60                 [MethodImplAttribute(MethodImplOptions.InternalCall)]
  61                 [SecurityPermission (SecurityAction.Demand, ControlThread=true)]
  62                 public static extern bool SetMinThreads (int workerThreads, int completionPortThreads);
  63
  64                 public static bool QueueUserWorkItem (WaitCallback callback)
  65                 {
  66                         IAsyncResult ar = callback.BeginInvoke (null, null, null);
  67                         if (ar == null)
  68                                 return false;
  69                         return true;
  70                 }
  71
  72                 public static bool QueueUserWorkItem (WaitCallback callback, object state)
  73                 {
  74                         IAsyncResult ar = callback.BeginInvoke (state, null, null);
  75                         if (ar == null)
  76                                 return false;
  77                         return true;
  78                 }
  79
  80                 public static RegisteredWaitHandle RegisterWaitForSingleObject (WaitHandle waitObject,
  81                                                                                 WaitOrTimerCallback callBack,
  82                                                                                 object state,
  83                                                                                 int millisecondsTimeOutInterval,
  84                                                                                 bool executeOnlyOnce)
  85                 {
  86                         return RegisterWaitForSingleObject (waitObject, callBack, state,
  87                                                             (long) millisecondsTimeOutInterval, executeOnlyOnce);
  88                 }
  89
  90                 public static RegisteredWaitHandle RegisterWaitForSingleObject (WaitHandle waitObject,
  91                                                                                 WaitOrTimerCallback callBack,
  92                                                                                 object state,
  93                                                                                 long millisecondsTimeOutInterval,
  94                                                                                 bool executeOnlyOnce)
  95                 {
  96                         if (millisecondsTimeOutInterval < -1)
  97                                 throw new ArgumentOutOfRangeException ("timeout", "timeout < -1");
  98
  99                         if (millisecondsTimeOutInterval > Int32.MaxValue)
 100                                 throw new NotSupportedException ("Timeout is too big. Maximum is Int32.MaxValue");
 101
 102                         TimeSpan timeout = new TimeSpan (0, 0, 0, 0, (int) millisecondsTimeOutInterval);
 103
 104                         RegisteredWaitHandle waiter = new RegisteredWaitHandle (waitObject, callBack, state,
 105                                                                                 timeout, executeOnlyOnce);
 106                         QueueUserWorkItem (new WaitCallback (waiter.Wait), null);
 107                         return waiter;
 108                 }
 109
 110                 public static RegisteredWaitHandle RegisterWaitForSingleObject (WaitHandle waitObject,
 111                                                                                 WaitOrTimerCallback callBack,
 112                                                                                 object state,
 113                                                                                 TimeSpan timeout,
 114                                                                                 bool executeOnlyOnce)
 115                 {
 116                         return RegisterWaitForSingleObject (waitObject, callBack, state,
 117                                                             (long) timeout.TotalMilliseconds, executeOnlyOnce);
 118
 119                 }
 120
 121                 [CLSCompliant(false)]
 122                 public static RegisteredWaitHandle RegisterWaitForSingleObject (WaitHandle waitObject,
 123                                                                                 WaitOrTimerCallback callBack,
 124                                                                                 object state,
 125                                                                                 uint millisecondsTimeOutInterval,
 126                                                                                 bool executeOnlyOnce)
 127                 {
 128                         return RegisterWaitForSingleObject (waitObject, callBack, state,
 129                                                             (long) millisecondsTimeOutInterval, executeOnlyOnce);
 130                 }
 131
 132                 [SecurityPermission (SecurityAction.Demand, ControlEvidence=true, ControlPolicy=true)]
 133                 public static bool UnsafeQueueUserWorkItem (WaitCallback callback, object state)
 134                 {
 135                         IAsyncResult ar = callback.BeginInvoke (state, null, null);
 136                         if (ar == null)
 137                                 return false;
 138                         return true;
 139                 }
 140
 141                 [MonoTODO]
 142                 [SecurityPermission (SecurityAction.Demand, ControlEvidence=true, ControlPolicy=true)]
 143                 public static RegisteredWaitHandle UnsafeRegisterWaitForSingleObject (WaitHandle waitObject,
 144                         WaitOrTimerCallback callBack, object state, int millisecondsTimeOutInterval,
 145                         bool executeOnlyOnce)
 146                 {
 147                         throw new NotImplementedException ();
 148                 }
 149
 150                 [MonoTODO]
 151                 [SecurityPermission (SecurityAction.Demand, ControlEvidence=true, ControlPolicy=true)]
 152                 public static RegisteredWaitHandle UnsafeRegisterWaitForSingleObject (WaitHandle waitObject,
 153                         WaitOrTimerCallback callBack, object state, long millisecondsTimeOutInterval,
 154                         bool executeOnlyOnce)
 155                 {
 156                         throw new NotImplementedException ();
 157                 }
 158
 159                 [MonoTODO]
 160                 [SecurityPermission (SecurityAction.Demand, ControlEvidence=true, ControlPolicy=true)]
 161                 public static RegisteredWaitHandle UnsafeRegisterWaitForSingleObject (WaitHandle waitObject,
 162                         WaitOrTimerCallback callBack, object state, TimeSpan timeout,
 163                         bool executeOnlyOnce)
 164                 {
 165                         throw new NotImplementedException ();
 166                 }
 167
 168                 [MonoTODO]
 169                 [CLSCompliant (false)]
 170                 [SecurityPermission (SecurityAction.Demand, ControlEvidence=true, ControlPolicy=true)]
 171                 public static RegisteredWaitHandle UnsafeRegisterWaitForSingleObject (WaitHandle waitObject,
 172                         WaitOrTimerCallback callBack, object state, uint millisecondsTimeOutInterval,
 173                         bool executeOnlyOnce)
 174                 {
 175                         throw new NotImplementedException ();
 176                 }
 177         }
 178 }