GtkSharp/Source/Libs/GLibSharp/Timeout.cs
zii-dmg 0c5bd3f471
Fixed glib source double removal (#327)
Fixed glib source double removal then using Source.Remove (Timeout.Remove, Idle.Remove).
I don't know if fix is correct or safe, but it solves problem that you can test in TimerDemo section from samples.

Repro:
If on Windows you should enable console in samples: <OutputType>Exe</OutputType>
Go to TimerDemo section and press buttons:

1. Add timer
2. Remove timer by handler
3. GC - no error in console

1. Add timer
2. Remove timer
3. GC - error in console "GLib-CRITICAL **: 20:29:41.579: Source ID 123 was not found when attempting to remove it"
2022-01-27 21:49:10 +01:00

119 lines
3.8 KiB
C#

// GLib.Timeout.cs - Timeout class implementation
//
// Author(s):
// Mike Kestner <mkestner@speakeasy.net>
// Stephane Delcroix <stephane@delcroix.org>
//
// Copyright (c) 2002 Mike Kestner
// Copyright (c) 2009 Novell, Inc.
//
// This program is free software; you can redistribute it and/or
// modify it under the terms of version 2 of the Lesser GNU General
// Public License as published by the Free Software Foundation.
//
// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
// Lesser General Public License for more details.
//
// You should have received a copy of the GNU Lesser General Public
// License along with this program; if not, write to the
// Free Software Foundation, Inc., 59 Temple Place - Suite 330,
// Boston, MA 02111-1307, USA.
namespace GLib {
using System;
using System.Collections.Generic;
using System.Runtime.InteropServices;
public delegate bool TimeoutHandler ();
public class Timeout {
[UnmanagedFunctionPointer (CallingConvention.Cdecl)]
delegate bool TimeoutHandlerInternal ();
internal class TimeoutProxy : SourceProxy {
public TimeoutProxy (TimeoutHandler real)
{
real_handler = real;
proxy_handler = new TimeoutHandlerInternal (Handler);
}
public bool Handler ()
{
try {
TimeoutHandler timeout_handler = (TimeoutHandler) real_handler;
bool cont = timeout_handler ();
return cont;
} catch (Exception e) {
ExceptionManager.RaiseUnhandledException (e, false);
}
return false;
}
}
private Timeout () {}
[UnmanagedFunctionPointer(CallingConvention.Cdecl)]
delegate uint d_g_timeout_add_full(int priority, uint interval, TimeoutHandlerInternal d, IntPtr data, DestroyNotify notify);
static d_g_timeout_add_full g_timeout_add_full = FuncLoader.LoadFunction<d_g_timeout_add_full>(FuncLoader.GetProcAddress(GLibrary.Load(Library.GLib), "g_timeout_add_full"));
public static uint Add (uint interval, TimeoutHandler hndlr, int priority)
{
TimeoutProxy p = new TimeoutProxy (hndlr);
lock (p)
{
var gch = GCHandle.Alloc(p);
var userData = GCHandle.ToIntPtr(gch);
p.ID = g_timeout_add_full (priority, interval, (TimeoutHandlerInternal) p.proxy_handler, userData, DestroyHelper.SourceProxyNotifyHandler);
}
return p.ID;
}
public static uint Add (uint interval, TimeoutHandler hndlr, Priority priority)
{
return Add (interval, hndlr, (int)priority);
}
public static uint Add (uint interval, TimeoutHandler hndlr)
{
return Add (interval, hndlr, (int)Priority.Default);
}
[UnmanagedFunctionPointer(CallingConvention.Cdecl)]
delegate uint d_g_timeout_add_seconds_full(int priority, uint interval, TimeoutHandlerInternal d, IntPtr data, DestroyNotify notify);
static d_g_timeout_add_seconds_full g_timeout_add_seconds_full = FuncLoader.LoadFunction<d_g_timeout_add_seconds_full>(FuncLoader.GetProcAddress(GLibrary.Load(Library.GLib), "g_timeout_add_seconds_full"));
public static uint AddSeconds (uint interval, TimeoutHandler hndlr, int priority)
{
TimeoutProxy p = new TimeoutProxy (hndlr);
lock (p)
{
var gch = GCHandle.Alloc(p);
var userData = GCHandle.ToIntPtr(gch);
p.ID = g_timeout_add_seconds_full (priority, interval, (TimeoutHandlerInternal) p.proxy_handler, userData, DestroyHelper.SourceProxyNotifyHandler);
}
return p.ID;
}
public static uint AddSeconds (uint interval, TimeoutHandler hndlr, Priority priority)
{
return AddSeconds (interval, hndlr, (int)priority);
}
public static uint AddSeconds (uint interval, TimeoutHandler hndlr)
{
return AddSeconds (interval, hndlr, (int)Priority.Default);
}
public static void Remove (uint id)
{
Source.Remove (id);
}
}
}