GtkSharp/gtk/ThreadNotify.cs
Gonzalo Paniagua Javier 4dcdbb53fe 2004-03-06 Gonzalo Paniagua Javier <gonzalo@ximian.com>
* glue/Makefile.am:
	* glue/makefile.win32:
	* glue/thread-notify.c: dropped.

	* gtk/ThreadNotify.cs: use just Idle.Add, which is what the deprecated
	gda_input_add does. No more P/Invoke here.

svn path=/trunk/gtk-sharp/; revision=23758
2004-03-06 18:48:20 +00:00

97 lines
1.8 KiB
C#

//
// ThreadNotify.cs: implements a notification for the thread running the Gtk main
// loop from another thread
//
// Authors:
// Miguel de Icaza (miguel@ximian.com).
// Gonzalo Paniagua Javier (gonzalo@ximian.com)
//
// (C) 2002 Ximian, Inc.
// (C) 2004 Novell, Inc.
//
namespace Gtk {
using System.Runtime.InteropServices;
using System.Threading;
using System;
// <summary>
// This delegate will be invoked on the main Gtk thread.
// </summary>
public delegate void ReadyEvent ();
/// <summary>
/// Utility class to help writting multi-threaded Gtk applications
/// </summary>
/// <remarks/>
///
public class ThreadNotify : IDisposable {
bool disposed;
ReadyEvent re;
GLib.IdleHandler idle;
bool notified;
/// <summary>
/// The ReadyEvent delegate will be invoked on the current thread (which should
/// be the Gtk thread) when another thread wakes us up by calling WakeupMain
/// </summary>
public ThreadNotify (ReadyEvent re)
{
this.re = re;
idle = new GLib.IdleHandler (CallbackWrapper);
}
bool CallbackWrapper ()
{
lock (this) {
if (disposed)
return false;
notified = false;
}
re ();
return false;
}
/// <summary>
/// Invoke this function from a thread to call the `ReadyEvent'
/// delegate provided in the constructor on the Main Gtk thread
/// </summary>
public void WakeupMain ()
{
lock (this){
if (notified)
return;
notified = true;
GLib.Idle.Add (idle);
}
}
public void Close ()
{
Dispose (true);
GC.SuppressFinalize (this);
}
~ThreadNotify ()
{
Dispose (false);
}
void IDisposable.Dispose ()
{
Close ();
}
protected virtual void Dispose (bool disposing)
{
lock (this) {
disposed = true;
}
}
}
}