namespace System.Threading
{
- [ComVisible (true)]
[StructLayout (LayoutKind.Sequential)]
- public abstract class WaitHandle
-#if MOONLIGHT
- : IDisposable
-#else
+ public abstract partial class WaitHandle
: MarshalByRefObject, IDisposable
-#endif
{
- [MethodImplAttribute(MethodImplOptions.InternalCall)]
- private static extern bool WaitAll_internal(WaitHandle[] handles, int ms, bool exitContext);
-
- static void CheckArray (WaitHandle [] handles, bool waitAll)
- {
- if (handles == null)
- throw new ArgumentNullException ("waitHandles");
-
- int length = handles.Length;
- if (length > 64)
- throw new NotSupportedException ("Too many handles");
-
- if (handles.Length == 0) {
- // MS throws different exceptions from the different methods.
- if (waitAll)
- throw new ArgumentNullException ("waitHandles");
- else
- throw new ArgumentException ();
- }
-
-#if false
- //
- // Although we should thrown an exception if this is an STA thread,
- // Mono does not know anything about STA threads, and just makes
- // things like Paint.NET not even possible to work.
- //
- // See bug #78455 for the bug this is supposed to fix.
- //
- if (waitAll && length > 1 && IsSTAThread)
- throw new NotSupportedException ("WaitAll for multiple handles is not allowed on an STA thread.");
-#endif
- foreach (WaitHandle w in handles) {
- if (w == null)
- throw new ArgumentNullException ("waitHandles", "null handle");
-
- if (w.safe_wait_handle == null)
- throw new ArgumentException ("null element found", "waitHandle");
-
- }
- }
-#if false
- // usage of property is commented - see above
- static bool IsSTAThread {
- get {
- bool isSTA = Thread.CurrentThread.ApartmentState ==
- ApartmentState.STA;
+ protected static readonly IntPtr InvalidHandle = (IntPtr) (-1);
- // FIXME: remove this check after Thread.ApartmentState
- // has been properly implemented.
- if (!isSTA) {
- Assembly asm = Assembly.GetEntryAssembly ();
- if (asm != null)
- isSTA = asm.EntryPoint.GetCustomAttributes (typeof (STAThreadAttribute), false).Length > 0;
- }
+ internal const int MaxWaitHandles = 64;
- return isSTA;
- }
- }
-#endif
- public static bool WaitAll(WaitHandle[] waitHandles)
+ static int WaitMultiple(WaitHandle[] waitHandles, int millisecondsTimeout, bool exitContext, bool WaitAll)
{
- CheckArray (waitHandles, true);
- return(WaitAll_internal(waitHandles, Timeout.Infinite, false));
- }
+ if (waitHandles.Length > MaxWaitHandles)
+ return WAIT_FAILED;
- public static bool WaitAll(WaitHandle[] waitHandles, int millisecondsTimeout, bool exitContext)
- {
- CheckArray (waitHandles, true);
- // check negative - except for -1 (which is Timeout.Infinite)
- if (millisecondsTimeout < Timeout.Infinite)
- throw new ArgumentOutOfRangeException ("millisecondsTimeout");
+ int release_last = -1;
try {
- if (exitContext) {
-#if MONOTOUCH
- throw new NotSupportedException ("exitContext == true is not supported");
-#else
+#if !DISABLE_REMOTING
+ if (exitContext)
SynchronizationAttribute.ExitContext ();
#endif
- }
- return(WaitAll_internal(waitHandles, millisecondsTimeout, false));
- }
- finally {
- if (exitContext) SynchronizationAttribute.EnterContext ();
- }
- }
-
- public static bool WaitAll(WaitHandle[] waitHandles,
- TimeSpan timeout,
- bool exitContext)
- {
- CheckArray (waitHandles, true);
- long ms = (long) timeout.TotalMilliseconds;
-
- if (ms < -1 || ms > Int32.MaxValue)
- throw new ArgumentOutOfRangeException ("timeout");
- try {
- if (exitContext) {
-#if MONOTOUCH
- throw new NotSupportedException ("exitContext == true is not supported");
-#else
- SynchronizationAttribute.ExitContext ();
-#endif
+ for (int i = 0; i < waitHandles.Length; ++i) {
+ try {} finally {
+ /* we have to put it in a finally block, to avoid having a ThreadAbortException
+ * between the return from DangerousAddRef and the assignement to release_last */
+ bool release = false;
+ waitHandles [i].SafeWaitHandle.DangerousAddRef (ref release);
+ release_last = i;
+ }
}
- return (WaitAll_internal (waitHandles, (int) ms, exitContext));
- }
- finally {
- if (exitContext) SynchronizationAttribute.EnterContext ();
- }
- }
- [MethodImplAttribute(MethodImplOptions.InternalCall)]
- private static extern int WaitAny_internal(WaitHandle[] handles, int ms, bool exitContext);
+ unsafe {
+ IntPtr* handles = stackalloc IntPtr[waitHandles.Length];
- // LAMESPEC: Doesn't specify how to signal failures
- [ReliabilityContract (Consistency.WillNotCorruptState, Cer.MayFail)]
- public static int WaitAny(WaitHandle[] waitHandles)
- {
- CheckArray (waitHandles, false);
- return(WaitAny_internal(waitHandles, Timeout.Infinite, false));
- }
+ for (int i = 0; i < waitHandles.Length; ++i)
+ handles[i] = waitHandles[i].SafeWaitHandle.DangerousGetHandle ();
- [ReliabilityContract (Consistency.WillNotCorruptState, Cer.MayFail)]
- public static int WaitAny(WaitHandle[] waitHandles,
- int millisecondsTimeout,
- bool exitContext)
- {
- CheckArray (waitHandles, false);
- // check negative - except for -1 (which is Timeout.Infinite)
- if (millisecondsTimeout < Timeout.Infinite)
- throw new ArgumentOutOfRangeException ("millisecondsTimeout");
+ return Wait_internal(handles, waitHandles.Length, WaitAll, millisecondsTimeout);
+ }
+ } finally {
+ for (int i = release_last; i >= 0; --i) {
+ waitHandles [i].SafeWaitHandle.DangerousRelease ();
+ }
- try {
- if (exitContext) {
-#if MONOTOUCH
- throw new NotSupportedException ("exitContext == true is not supported");
-#else
- SynchronizationAttribute.ExitContext ();
+#if !DISABLE_REMOTING
+ if (exitContext)
+ SynchronizationAttribute.EnterContext ();
#endif
- }
- return(WaitAny_internal(waitHandles, millisecondsTimeout, exitContext));
- }
- finally {
- if (exitContext) SynchronizationAttribute.EnterContext ();
}
}
- [ReliabilityContract (Consistency.WillNotCorruptState, Cer.MayFail)]
- public static int WaitAny(WaitHandle[] waitHandles, TimeSpan timeout)
+ static int WaitOneNative (SafeHandle waitableSafeHandle, uint millisecondsTimeout, bool hasThreadAffinity, bool exitContext)
{
- return WaitAny (waitHandles, timeout, false);
- }
-
- [ReliabilityContract (Consistency.WillNotCorruptState, Cer.MayFail)]
- public static int WaitAny(WaitHandle[] waitHandles, int millisecondsTimeout)
- {
- return WaitAny (waitHandles, millisecondsTimeout, false);
- }
-
- [ReliabilityContract (Consistency.WillNotCorruptState, Cer.MayFail)]
- public static int WaitAny(WaitHandle[] waitHandles,
- TimeSpan timeout, bool exitContext)
- {
- CheckArray (waitHandles, false);
- long ms = (long) timeout.TotalMilliseconds;
-
- if (ms < -1 || ms > Int32.MaxValue)
- throw new ArgumentOutOfRangeException ("timeout");
-
+ bool release = false;
try {
- if (exitContext) {
-#if MONOTOUCH
- throw new NotSupportedException ("exitContext == true is not supported");
-#else
+#if !DISABLE_REMOTING
+ if (exitContext)
SynchronizationAttribute.ExitContext ();
#endif
- }
- return (WaitAny_internal(waitHandles, (int) ms, exitContext));
- }
- finally {
- if (exitContext) SynchronizationAttribute.EnterContext ();
- }
- }
- protected WaitHandle()
- {
- // FIXME
- }
-
- public virtual void Close ()
- {
- Dispose(true);
- }
-
-#if NET_4_0 || MOBILE || MOONLIGHT
- public void Dispose ()
-#else
- void IDisposable.Dispose ()
-#endif
- {
- Close ();
- }
-
- public const int WaitTimeout = 258;
-
- //
- // In 2.0 we use SafeWaitHandles instead of IntPtrs
- //
- SafeWaitHandle safe_wait_handle;
-
- [Obsolete ("In the profiles > 2.x, use SafeHandle instead of Handle")]
- public virtual IntPtr Handle {
- get {
- return safe_wait_handle.DangerousGetHandle ();
- }
+ waitableSafeHandle.DangerousAddRef (ref release);
- [SecurityPermission (SecurityAction.LinkDemand, UnmanagedCode = true)]
- [SecurityPermission (SecurityAction.InheritanceDemand, UnmanagedCode = true)]
- set {
- if (value == InvalidHandle)
- safe_wait_handle = new SafeWaitHandle (InvalidHandle, false);
- else
- safe_wait_handle = new SafeWaitHandle (value, true);
- }
- }
-
- [MethodImplAttribute(MethodImplOptions.InternalCall)]
- private extern bool WaitOne_internal(IntPtr handle, int ms, bool exitContext);
-
- protected virtual void Dispose (bool explicitDisposing)
- {
- if (!disposed){
-
- //
- // This is only the case if the handle was never properly initialized
- // most likely a bug in the derived class
- //
- if (safe_wait_handle == null)
- return;
-
- lock (this){
- if (disposed)
- return;
-
- disposed = true;
- if (safe_wait_handle != null)
- safe_wait_handle.Dispose ();
+ unsafe {
+ IntPtr handle = waitableSafeHandle.DangerousGetHandle();
+ return Wait_internal(&handle, 1, false, (int)millisecondsTimeout);
}
- }
- }
-
- public SafeWaitHandle SafeWaitHandle {
- [ReliabilityContract (Consistency.WillNotCorruptState, Cer.MayFail)]
- get {
- return safe_wait_handle;
- }
-
- [ReliabilityContract (Consistency.WillNotCorruptState, Cer.Success)]
- set {
- if (value == null)
- safe_wait_handle = new SafeWaitHandle (InvalidHandle, false);
- else
- safe_wait_handle = value;
- }
- }
-
- public static bool SignalAndWait (WaitHandle toSignal,
- WaitHandle toWaitOn)
- {
- return SignalAndWait (toSignal, toWaitOn, -1, false);
- }
-
- public static bool SignalAndWait (WaitHandle toSignal,
- WaitHandle toWaitOn,
- int millisecondsTimeout,
- bool exitContext)
- {
- if (toSignal == null)
- throw new ArgumentNullException ("toSignal");
- if (toWaitOn == null)
- throw new ArgumentNullException ("toWaitOn");
-
- if (millisecondsTimeout < -1)
- throw new ArgumentOutOfRangeException ("millisecondsTimeout");
-
- return SignalAndWait_Internal (toSignal.Handle, toWaitOn.Handle, millisecondsTimeout, exitContext);
- }
-
- public static bool SignalAndWait (WaitHandle toSignal,
- WaitHandle toWaitOn,
- TimeSpan timeout,
- bool exitContext)
- {
- double ms = timeout.TotalMilliseconds;
- if (ms > Int32.MaxValue)
- throw new ArgumentOutOfRangeException ("timeout");
-
- return SignalAndWait (toSignal, toWaitOn, Convert.ToInt32 (ms), false);
- }
-
- [MethodImplAttribute(MethodImplOptions.InternalCall)]
- static extern bool SignalAndWait_Internal (IntPtr toSignal, IntPtr toWaitOn, int ms, bool exitContext);
-
- public virtual bool WaitOne()
- {
- CheckDisposed ();
- bool release = false;
- try {
- safe_wait_handle.DangerousAddRef (ref release);
- return (WaitOne_internal(safe_wait_handle.DangerousGetHandle (), Timeout.Infinite, false));
} finally {
if (release)
- safe_wait_handle.DangerousRelease ();
- }
- }
-
- public virtual bool WaitOne(int millisecondsTimeout, bool exitContext)
- {
- CheckDisposed ();
- // check negative - except for -1 (which is Timeout.Infinite)
- if (millisecondsTimeout < Timeout.Infinite)
- throw new ArgumentOutOfRangeException ("millisecondsTimeout");
+ waitableSafeHandle.DangerousRelease ();
- bool release = false;
- try {
- if (exitContext) {
-#if MONOTOUCH
- throw new NotSupportedException ("exitContext == true is not supported");
-#else
- SynchronizationAttribute.ExitContext ();
-#endif
- }
- safe_wait_handle.DangerousAddRef (ref release);
- return (WaitOne_internal(safe_wait_handle.DangerousGetHandle (), millisecondsTimeout, exitContext));
- } finally {
+#if !DISABLE_REMOTING
if (exitContext)
SynchronizationAttribute.EnterContext ();
- if (release)
- safe_wait_handle.DangerousRelease ();
+#endif
}
}
- public virtual bool WaitOne (int millisecondsTimeout)
- {
- return WaitOne (millisecondsTimeout, false);
- }
-
- public virtual bool WaitOne (TimeSpan timeout)
- {
- return WaitOne (timeout, false);
- }
+ [MethodImplAttribute(MethodImplOptions.InternalCall)]
+ unsafe static extern int Wait_internal(IntPtr* handles, int numHandles, bool waitAll, int ms);
- public virtual bool WaitOne(TimeSpan timeout, bool exitContext)
+ static int SignalAndWaitOne (SafeWaitHandle waitHandleToSignal,SafeWaitHandle waitHandleToWaitOn, int millisecondsTimeout, bool hasThreadAffinity, bool exitContext)
{
- CheckDisposed ();
- long ms = (long) timeout.TotalMilliseconds;
- if (ms < -1 || ms > Int32.MaxValue)
- throw new ArgumentOutOfRangeException ("timeout");
-
- bool release = false;
+ bool releaseHandleToSignal = false, releaseHandleToWaitOn = false;
try {
- if (exitContext) {
-#if MONOTOUCH
- throw new NotSupportedException ("exitContext == true is not supported");
-#else
- SynchronizationAttribute.ExitContext ();
-#endif
- }
- safe_wait_handle.DangerousAddRef (ref release);
- return (WaitOne_internal(safe_wait_handle.DangerousGetHandle (), (int) ms, exitContext));
- }
- finally {
- if (exitContext)
- SynchronizationAttribute.EnterContext ();
- if (release)
- safe_wait_handle.DangerousRelease ();
- }
- }
+ waitHandleToSignal.DangerousAddRef (ref releaseHandleToSignal);
+ waitHandleToWaitOn.DangerousAddRef (ref releaseHandleToWaitOn);
- internal void CheckDisposed ()
- {
- if (disposed || safe_wait_handle == null)
- throw new ObjectDisposedException (GetType ().FullName);
- }
-
- public static bool WaitAll(WaitHandle[] waitHandles, int millisecondsTimeout)
- {
- return WaitAll (waitHandles, millisecondsTimeout, false);
+ return SignalAndWait_Internal (waitHandleToSignal.DangerousGetHandle (), waitHandleToWaitOn.DangerousGetHandle (), millisecondsTimeout);
+ } finally {
+ if (releaseHandleToSignal)
+ waitHandleToSignal.DangerousRelease ();
+ if (releaseHandleToWaitOn)
+ waitHandleToWaitOn.DangerousRelease ();
+ }
}
- public static bool WaitAll(WaitHandle[] waitHandles, TimeSpan timeout)
- {
- return WaitAll (waitHandles, timeout, false);
- }
-
- protected static readonly IntPtr InvalidHandle = (IntPtr) (-1);
- bool disposed = false;
+ [MethodImplAttribute(MethodImplOptions.InternalCall)]
+ static extern int SignalAndWait_Internal (IntPtr toSignal, IntPtr toWaitOn, int ms);
}
}
projects / mono.git / blobdiff