using System.Runtime.CompilerServices;
using System.Runtime.Remoting.Contexts;
using System.Security.Permissions;
+using System.Runtime.InteropServices;
+using Microsoft.Win32.SafeHandles;
+using System.Runtime.ConstrainedExecution;
namespace System.Threading
{
- public abstract class WaitHandle : MarshalByRefObject, IDisposable
+ [ComVisible (true)]
+ [StructLayout (LayoutKind.Sequential)]
+ public abstract class WaitHandle
+#if MOONLIGHT
+ : IDisposable
+#else
+ : MarshalByRefObject, IDisposable
+#endif
{
[MethodImplAttribute(MethodImplOptions.InternalCall)]
private static extern bool WaitAll_internal(WaitHandle[] handles, int ms, bool exitContext);
if (length > 64)
throw new NotSupportedException ("Too many handles");
- if (waitAll && length > 1 &&
- (Thread.CurrentThread.ApartmentState == ApartmentState.STA ||
- Assembly.GetEntryAssembly ().EntryPoint.GetCustomAttributes (typeof (STAThreadAttribute), false).Length == 1))
+ 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.os_handle == InvalidHandle)
+ 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;
+
+ // 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;
+ }
+
+ return isSTA;
+ }
+ }
+#endif
public static bool WaitAll(WaitHandle[] waitHandles)
{
CheckArray (waitHandles, true);
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");
+
try {
- if (exitContext) SynchronizationAttribute.ExitContext ();
+ if (exitContext) {
+#if MONOTOUCH
+ throw new NotSupportedException ("exitContext == true is not supported");
+#else
+ SynchronizationAttribute.ExitContext ();
+#endif
+ }
return(WaitAll_internal(waitHandles, millisecondsTimeout, false));
}
finally {
throw new ArgumentOutOfRangeException ("timeout");
try {
- if (exitContext) SynchronizationAttribute.ExitContext ();
+ if (exitContext) {
+#if MONOTOUCH
+ throw new NotSupportedException ("exitContext == true is not supported");
+#else
+ SynchronizationAttribute.ExitContext ();
+#endif
+ }
return (WaitAll_internal (waitHandles, (int) ms, exitContext));
}
finally {
private static extern int WaitAny_internal(WaitHandle[] handles, int ms, bool exitContext);
// 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));
}
+ [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");
+
try {
- if (exitContext) SynchronizationAttribute.ExitContext ();
+ if (exitContext) {
+#if MONOTOUCH
+ throw new NotSupportedException ("exitContext == true is not supported");
+#else
+ SynchronizationAttribute.ExitContext ();
+#endif
+ }
return(WaitAny_internal(waitHandles, millisecondsTimeout, exitContext));
}
finally {
}
}
+ [ReliabilityContract (Consistency.WillNotCorruptState, Cer.MayFail)]
+ public static int WaitAny(WaitHandle[] waitHandles, TimeSpan timeout)
+ {
+ 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)
{
throw new ArgumentOutOfRangeException ("timeout");
try {
- if (exitContext) SynchronizationAttribute.ExitContext ();
+ if (exitContext) {
+#if MONOTOUCH
+ throw new NotSupportedException ("exitContext == true is not supported");
+#else
+ SynchronizationAttribute.ExitContext ();
+#endif
+ }
return (WaitAny_internal(waitHandles, (int) ms, exitContext));
}
finally {
}
}
- [MonoTODO]
- public WaitHandle() {
+ 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;
- private IntPtr os_handle = InvalidHandle;
-
+ //
+ // 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(os_handle);
+ return safe_wait_handle.DangerousGetHandle ();
}
-
+
[SecurityPermission (SecurityAction.LinkDemand, UnmanagedCode = true)]
[SecurityPermission (SecurityAction.InheritanceDemand, UnmanagedCode = true)]
set {
- os_handle=value;
+ 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);
- public virtual void Close() {
- Dispose(true);
- GC.SuppressFinalize (this);
+ 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 ();
+ }
+ }
}
- internal void CheckDisposed ()
+ 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)
{
- if (disposed || os_handle == InvalidHandle)
- throw new ObjectDisposedException (GetType ().FullName);
+ 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)]
- private extern bool WaitOne_internal(IntPtr handle, int ms, bool exitContext);
+ static extern bool SignalAndWait_Internal (IntPtr toSignal, IntPtr toWaitOn, int ms, bool exitContext);
public virtual bool WaitOne()
{
CheckDisposed ();
- return(WaitOne_internal(os_handle, Timeout.Infinite, false));
+ 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");
+
+ bool release = false;
try {
- if (exitContext) SynchronizationAttribute.ExitContext ();
- return(WaitOne_internal(os_handle, millisecondsTimeout, exitContext));
- }
- finally {
- if (exitContext) SynchronizationAttribute.EnterContext ();
+ 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 (exitContext)
+ SynchronizationAttribute.EnterContext ();
+ if (release)
+ safe_wait_handle.DangerousRelease ();
}
}
+ public virtual bool WaitOne (int millisecondsTimeout)
+ {
+ return WaitOne (millisecondsTimeout, false);
+ }
+
+ public virtual bool WaitOne (TimeSpan timeout)
+ {
+ return WaitOne (timeout, false);
+ }
+
public virtual bool WaitOne(TimeSpan timeout, bool exitContext)
{
CheckDisposed ();
if (ms < -1 || ms > Int32.MaxValue)
throw new ArgumentOutOfRangeException ("timeout");
+ bool release = false;
try {
- if (exitContext) SynchronizationAttribute.ExitContext ();
- return (WaitOne_internal(os_handle, (int) ms, exitContext));
+ 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 (exitContext)
+ SynchronizationAttribute.EnterContext ();
+ if (release)
+ safe_wait_handle.DangerousRelease ();
}
}
- protected static readonly IntPtr InvalidHandle = IntPtr.Zero;
-
- bool disposed = false;
-
- void IDisposable.Dispose() {
- Dispose(true);
- // Take yourself off the Finalization queue
- GC.SuppressFinalize(this);
+ internal void CheckDisposed ()
+ {
+ if (disposed || safe_wait_handle == null)
+ throw new ObjectDisposedException (GetType ().FullName);
}
-
- protected virtual void Dispose(bool explicitDisposing) {
- // Check to see if Dispose has already been called.
- if (!disposed) {
- disposed=true;
- if (os_handle == InvalidHandle)
- return;
- lock (this) {
- if (os_handle != InvalidHandle) {
- NativeEventCalls.CloseEvent_internal (os_handle);
- os_handle = InvalidHandle;
- }
- }
- }
+ public static bool WaitAll(WaitHandle[] waitHandles, int millisecondsTimeout)
+ {
+ return WaitAll (waitHandles, millisecondsTimeout, false);
}
- ~WaitHandle() {
- Dispose(false);
+ public static bool WaitAll(WaitHandle[] waitHandles, TimeSpan timeout)
+ {
+ return WaitAll (waitHandles, timeout, false);
}
+
+ protected static readonly IntPtr InvalidHandle = (IntPtr) (-1);
+ bool disposed = false;
}
}
projects / mono.git / blobdiff