Thanks Scuri and Milind.
It's good to know the IupSetFunction() though I may not use the idle
function this time. I've tried the timer suggested by both of you. It works
pretty well, without any lag I can notice and with quite low CPU
consumption. I have also tested the sigalarm in the mean time. The IUP
timer doesn't use sigalarm. That's very good for my project :-)
Kind regards
Andy
> Message: 1
> Date: Wed, 7 Oct 2015 09:03:20 -0300
> From: Antonio Scuri <sc...@tecgraf.puc-rio.br>
> Subject: Re: [Iup-users] Is Iup pthread safe?
> To: "IUP discussion list." <iup-users@lists.sourceforge.net>
> Message-ID:
> <CABTKdrWZMdc6AYRYGk3+T8A_5bH_VXa6rYWNVSL1PO=
> c1vz...@mail.gmail.com>
> Content-Type: text/plain; charset="utf-8"
>
> You can set the IDLE function using IupSetFunction("IDLE_ACTION",
> my_func). You hacked the inner part of it.
>
> But be aware that the IDLE consumes CPU a lot, because it is not actually
> "idle".
>
> Best,
> Scuri
>
>
> On Wed, Oct 7, 2015 at 6:15 AM, Andy Xiyue <xiyue...@gmail.com> wrote:
>
> > Hey guys,
> >
> > Please ignore the quoted contents, I don't know why I can't receive the
> > thread emails but the Iup-users Digest.
> >
> > Well when I read the source code of IupMainLoop() expecting some clue, I
> > do find a clue, iupdrvSetIdleFunction(). I guess it will be called inside
> > IupMainLoop() when it's idle so I put a test code in there, please find
> the
> > attached snippet.
> >
> > In simple words, I moved all IUP related events into the idle function
> and
> > let it communicate with other thread via a global variable (just to prove
> > the concept, will be changed to a message queue later). It works pretty
> > well :-)
> >
> > The only problem is this approach looks like a hacking. The
> > iupdrvSetIdleFunction() is an internal function which means it should not
> > be called by users. Another only problem will be the CPU usage could be
> > high because you have to poll your events/messages/etc constantly inside
> > the idle function. It's legal but nasty.
> >
> > Hi John,
> >
> > I'm afraid I don't understand script basic. Any idea in C?
> >
> > Hi Milind,
> >
> > I thought about the timer but haven't tried it yet. How's the
> performance?
> >
> > Hi Ranier,
> >
> > I think the main issue is not choosing which IPC but how to run IPC in
> the
> > main IUP thread. Currently I can't have the main IUP thread accepting
> > events from other threads.
> >
> > Hi J?rg,
> >
> > It sounds we are looking at the same problem, how to unblock the gui
> > inside main loop.
> >
> > Hi Scuri,
> >
> > Is there some method officially recommended by IUP team, similar to my
> > hacking in iupdrvSetIdleFunction(), to intercommunicating between
> threads?
> > For example, some function call to insert IUP events into underlay event
> > list so it will be processed finally in the main loop? In that case, I
> can
> > send notification in other threads and it will trigger an event in main
> IUP
> > thread so my codes could update the progress bar or something else?
> >
> > Kind regards
> > Andy
> >
> >
> > On 6 October 2015 at 21:25, <iup-users-requ...@lists.sourceforge.net>
> > wrote:
> >
> >> Send Iup-users mailing list submissions to
> >> iup-users@lists.sourceforge.net
> >>
> >> To subscribe or unsubscribe via the World Wide Web, visit
> >> https://lists.sourceforge.net/lists/listinfo/iup-users
> >> or, via email, send a message with subject or body 'help' to
> >> iup-users-requ...@lists.sourceforge.net
> >>
> >> You can reach the person managing the list at
> >> iup-users-ow...@lists.sourceforge.net
> >>
> >> When replying, please edit your Subject line so it is more specific
> >> than "Re: Contents of Iup-users digest..."
> >>
> >>
> >> Today's Topics:
> >>
> >> 1. Re: Is Iup pthread safe? (John Spikowski)
> >> 2. Re: Is Iup pthread safe? (Ranier VF)
> >> 3. Re: Is Iup pthread safe? (Andy Xiyue)
> >> 4. Re: Is Iup pthread safe? (Milind Gupta)
> >> 5. Re: Is Iup pthread safe? (John Spikowski)
> >> 6. Re: Is Iup pthread safe? (Ranier VF)
> >>
> >>
> >> ----------------------------------------------------------------------
> >>
> >> Message: 1
> >> Date: Thu, 01 Oct 2015 23:39:24 -0700
> >> From: John Spikowski <supp...@scriptbasic.org>
> >> Subject: Re: [Iup-users] Is Iup pthread safe?
> >> To: "IUP discussion list." <iup-users@lists.sourceforge.net>
> >> Message-ID: <1443767964.2357.2.camel@laptop>
> >> Content-Type: text/plain; charset="UTF-8"
> >>
> >> Hi Andy,
> >>
> >> IUP isn't thread safe by default but that doesn't mean it can't be done.
> >> Here is an example in Script BASIC (Windows & Linux)
> >>
> >> http://www.scriptbasic.org/forum/index.php/topic,335.0.html
> >>
> >> John
> >>
> >>
> >> On Fri, 2015-10-02 at 14:36 +1000, Andy Xiyue wrote:
> >> > Hi Scuri,
> >> >
> >> >
> >> > Recently I tried to use IUP with more than one thread. My plan is
> >> > simple, run IupMainLoop() in one thread and feed progress bar or text
> >> > control in another thread. Theoretically I don't need to synchronize
> >> > the IUP calls because the IupMainLoop() will process the events sooner
> >> > or later. However I met a lot of problems. Sometimes the client area
> >> > became invalided without refresh. Sometimes I got a core dump
> >> > triggered by X11 event. For example, the attached file was simplified
> >> > from my program. When the progress bar running, if you select text in
> >> > the text control, the app will received sig 11:
> >> >
> >> > iqiup: Fatal IO error 11 (Resource temporarily unavailable) on X
> >> > server :0.0.
> >> >
> >> >
> >> > It looks like I misunderstood the programming model of IUP. Is IUP
> >> > safe to update the attribution of controls in different thread? If
> >> > it's not, how can I manually send events to the main loop to update
> >> > the controls?
> >> >
> >> >
> >> > Kind regards
> >> >
> >> > Andy
> >> >
> >> >
> >>
> ------------------------------------------------------------------------------
> >> > _______________________________________________
> >> > Iup-users mailing list
> >> > Iup-users@lists.sourceforge.net
> >> > https://lists.sourceforge.net/lists/listinfo/iup-users
> >>
> >>
> >>
> >>
> >>
> >> ------------------------------
> >>
> >> Message: 2
> >> Date: Fri, 2 Oct 2015 10:03:13 +0000
> >> From: Ranier VF <ranier_...@hotmail.com>
> >> Subject: Re: [Iup-users] Is Iup pthread safe?
> >> To: IUP discussion list. <iup-users@lists.sourceforge.net>
> >> Message-ID: <bay168-w110f48abdeb2d5e950b3b19e3...@phx.gbl>
> >> Content-Type: text/plain; charset="iso-8859-1"
> >>
> >> Hi,Neither GUI is thread safe.You need call Thread GUI, to update the
> >> interface.From:
> http://webserver2.tecgraf.puc-rio.br/iup/MultithreadUser
> >> interface is usually not thread safe and IUP is not thread safe. The
> >> general recommendation when you want more than one thread is to build
> the
> >> application and the user interface in the main thread, and create
> secondary
> >> threads that communicates with the main thread to update the interface.
> The
> >> secondary threads should not directly update the interface.
> >> Best,Ranier Vilela
> >>
> >> > From: supp...@scriptbasic.org
> >> > To: iup-users@lists.sourceforge.net
> >> > Date: Thu, 1 Oct 2015 23:39:24 -0700
> >> > Subject: Re: [Iup-users] Is Iup pthread safe?
> >> >
> >> > Hi Andy,
> >> >
> >> > IUP isn't thread safe by default but that doesn't mean it can't be
> done.
> >> > Here is an example in Script BASIC (Windows & Linux)
> >> >
> >> > http://www.scriptbasic.org/forum/index.php/topic,335.0.html
> >> >
> >> > John
> >> >
> >> >
> >> > On Fri, 2015-10-02 at 14:36 +1000, Andy Xiyue wrote:
> >> > > Hi Scuri,
> >> > >
> >> > >
> >> > > Recently I tried to use IUP with more than one thread. My plan is
> >> > > simple, run IupMainLoop() in one thread and feed progress bar or
> text
> >> > > control in another thread. Theoretically I don't need to synchronize
> >> > > the IUP calls because the IupMainLoop() will process the events
> sooner
> >> > > or later. However I met a lot of problems. Sometimes the client area
> >> > > became invalided without refresh. Sometimes I got a core dump
> >> > > triggered by X11 event. For example, the attached file was
> simplified
> >> > > from my program. When the progress bar running, if you select text
> in
> >> > > the text control, the app will received sig 11:
> >> > >
> >> > > iqiup: Fatal IO error 11 (Resource temporarily unavailable) on X
> >> > > server :0.0.
> >> > >
> >> > >
> >> > > It looks like I misunderstood the programming model of IUP. Is IUP
> >> > > safe to update the attribution of controls in different thread? If
> >> > > it's not, how can I manually send events to the main loop to update
> >> > > the controls?
> >> > >
> >> > >
> >> > > Kind regards
> >> > >
> >> > > Andy
> >> > >
> >> > >
> >>
> ------------------------------------------------------------------------------
> >> > > _______________________________________________
> >> > > Iup-users mailing list
> >> > > Iup-users@lists.sourceforge.net
> >> > > https://lists.sourceforge.net/lists/listinfo/iup-users
> >> >
> >> >
> >> >
> >> >
> >>
> ------------------------------------------------------------------------------
> >> > _______________________________________________
> >> > Iup-users mailing list
> >> > Iup-users@lists.sourceforge.net
> >> > https://lists.sourceforge.net/lists/listinfo/iup-users
> >>
> >> -------------- next part --------------
> >> An HTML attachment was scrubbed...
> >>
> >> ------------------------------
> >>
> >> Message: 3
> >> Date: Tue, 6 Oct 2015 15:54:51 +1100
> >> From: Andy Xiyue <xiyue...@gmail.com>
> >> Subject: Re: [Iup-users] Is Iup pthread safe?
> >> To: iup-users@lists.sourceforge.net
> >> Message-ID:
> >> <
> >> cafpcpfoggrkdhtvjjay5znapyt_ci+p-+wqnfjjqw393vsr...@mail.gmail.com>
> >> Content-Type: text/plain; charset="utf-8"
> >>
> >>
> >> Thanks John and Ranier.
> >>
> >> At least I'm confirmed now I can not update the attributions of IUP
> >> controls in other threads so my previous programming module was
> definitely
> >> wrong.
> >>
> >> So the question becomes how to send the control update event to the main
> >> thread?
> >>
> >> It's quite obvious the main thread is stuck in IupMainLoop(). Most
> events
> >> can be processed in this main thread, like buttons, text, etc. When
> users
> >> click the button, or inside the text input entry, the IUP generates the
> >> event and it will be processed in IupMainLoop(). However, how an
> external
> >> thread send the event into the main thread? I can't use message queue or
> >> semaphore because IupMainLoop() takes all the control. Are there some
> >> functions used for inserting IUP events?
> >>
> >> Kind regards
> >> Andy
> >> -------------- next part --------------
> >> An HTML attachment was scrubbed...
> >>
> >> ------------------------------
> >>
> >> Message: 4
> >> Date: Mon, 5 Oct 2015 22:01:48 -0700
> >> From: Milind Gupta <milind.gu...@gmail.com>
> >> Subject: Re: [Iup-users] Is Iup pthread safe?
> >> To: "IUP discussion list." <iup-users@lists.sourceforge.net>
> >> Message-ID:
> >> <
> >> caojr7arwlukyrqrc5l1krbqj8ayon3iqoerurxcufrv86hx...@mail.gmail.com>
> >> Content-Type: text/plain; charset="utf-8"
> >>
> >> What I did was to have a timer run and listen to communication from
> >> another
> >> thread. I used sockets to send and receive data.
> >>
> >> Milind
> >>
> >>
> >> On Mon, Oct 5, 2015 at 9:54 PM, Andy Xiyue <xiyue...@gmail.com> wrote:
> >>
> >> > Thanks John and Ranier.
> >> >
> >> > At least I'm confirmed now I can not update the attributions of IUP
> >> > controls in other threads so my previous programming module was
> >> definitely
> >> > wrong.
> >> >
> >> > So the question becomes how to send the control update event to the
> main
> >> > thread?
> >> >
> >> > It's quite obvious the main thread is stuck in IupMainLoop(). Most
> >> events
> >> > can be processed in this main thread, like buttons, text, etc. When
> >> users
> >> > click the button, or inside the text input entry, the IUP generates
> the
> >> > event and it will be processed in IupMainLoop(). However, how an
> >> external
> >> > thread send the event into the main thread? I can't use message queue
> or
> >> > semaphore because IupMainLoop() takes all the control. Are there some
> >> > functions used for inserting IUP events?
> >> >
> >> > Kind regards
> >> > Andy
> >> >
> >> >
> >> >
> >>
> ------------------------------------------------------------------------------
> >> >
> >> > _______________________________________________
> >> > Iup-users mailing list
> >> > Iup-users@lists.sourceforge.net
> >> > https://lists.sourceforge.net/lists/listinfo/iup-users
> >> >
> >> >
> >> -------------- next part --------------
> >> An HTML attachment was scrubbed...
> >>
> >> ------------------------------
> >>
> >> Message: 5
> >> Date: Mon, 05 Oct 2015 22:17:15 -0700
> >> From: John Spikowski <supp...@scriptbasic.org>
> >> Subject: Re: [Iup-users] Is Iup pthread safe?
> >> To: "IUP discussion list." <iup-users@lists.sourceforge.net>
> >> Message-ID: <1444108635.2309.11.camel@laptop>
> >> Content-Type: text/plain; charset="UTF-8"
> >>
> >> Andy,
> >>
> >> I feel if you follow what I have done in Script BASIC for threaded IUP
> >> it should work for you without any changes to anything.
> >>
> >> John
> >>
> >> On Tue, 2015-10-06 at 15:54 +1100, Andy Xiyue wrote:
> >> > Thanks John and Ranier.
> >> >
> >> >
> >> > At least I'm confirmed now I can not update the attributions of IUP
> >> > controls in other threads so my previous programming module was
> >> > definitely wrong.
> >> >
> >> > So the question becomes how to send the control update event to the
> >> > main thread?
> >> >
> >> >
> >> > It's quite obvious the main thread is stuck in IupMainLoop(). Most
> >> > events can be processed in this main thread, like buttons, text, etc.
> >> > When users click the button, or inside the text input entry, the IUP
> >> > generates the event and it will be processed in IupMainLoop().
> >> > However, how an external thread send the event into the main thread? I
> >> > can't use message queue or semaphore because IupMainLoop() takes all
> >> > the control. Are there some functions used for inserting IUP events?
> >> >
> >> >
> >> > Kind regards
> >> >
> >> > Andy
> >> >
> >> >
> >>
> ------------------------------------------------------------------------------
> >> > _______________________________________________
> >> > Iup-users mailing list
> >> > Iup-users@lists.sourceforge.net
> >> > https://lists.sourceforge.net/lists/listinfo/iup-users
> >>
> >>
> >>
> >>
> >>
> >> ------------------------------
> >>
> >> Message: 6
> >> Date: Tue, 6 Oct 2015 10:25:10 +0000
> >> From: Ranier VF <ranier_...@hotmail.com>
> >> Subject: Re: [Iup-users] Is Iup pthread safe?
> >> To: IUP discussion list. <iup-users@lists.sourceforge.net>
> >> Message-ID: <bay168-w306d48c8bfe8ca829b9c65e3...@phx.gbl>
> >> Content-Type: text/plain; charset="iso-8859-1"
> >>
> >> Hi,Well, your implementation must be:one consumer (GUI thread)many
> >> producers (GUI events)
> >> You can use mutex-condition pair (classic), sockets or a new way pipes.
> >> Best,Ranier Vilela
> >>
> >> > From: supp...@scriptbasic.org
> >> > To: iup-users@lists.sourceforge.net
> >> > Date: Mon, 5 Oct 2015 22:17:15 -0700
> >> > Subject: Re: [Iup-users] Is Iup pthread safe?
> >> >
> >> > Andy,
> >> >
> >> > I feel if you follow what I have done in Script BASIC for threaded IUP
> >> > it should work for you without any changes to anything.
> >> >
> >> > John
> >> >
> >> > On Tue, 2015-10-06 at 15:54 +1100, Andy Xiyue wrote:
> >> > > Thanks John and Ranier.
> >> > >
> >> > >
> >> > > At least I'm confirmed now I can not update the attributions of IUP
> >> > > controls in other threads so my previous programming module was
> >> > > definitely wrong.
> >> > >
> >> > > So the question becomes how to send the control update event to the
> >> > > main thread?
> >> > >
> >> > >
> >> > > It's quite obvious the main thread is stuck in IupMainLoop(). Most
> >> > > events can be processed in this main thread, like buttons, text,
> etc.
> >> > > When users click the button, or inside the text input entry, the IUP
> >> > > generates the event and it will be processed in IupMainLoop().
> >> > > However, how an external thread send the event into the main
> thread? I
> >> > > can't use message queue or semaphore because IupMainLoop() takes all
> >> > > the control. Are there some functions used for inserting IUP events?
> >> > >
> >> > >
> >> > > Kind regards
> >> > >
> >> > > Andy
> >> > >
> >> > >
> >>
> ------------------------------------------------------------------------------
> >> > > _______________________________________________
> >> > > Iup-users mailing list
> >> > > Iup-users@lists.sourceforge.net
> >> > > https://lists.sourceforge.net/lists/listinfo/iup-users
> >> >
> >> >
> >> >
> >> >
> >>
> ------------------------------------------------------------------------------
> >> > _______________________________________________
> >> > Iup-users mailing list
> >> > Iup-users@lists.sourceforge.net
> >> > https://lists.sourceforge.net/lists/listinfo/iup-users
> >>
> >> -------------- next part --------------
> >> An HTML attachment was scrubbed...
> >>
> >> ------------------------------
> >>
> >>
> >>
> ------------------------------------------------------------------------------
> >>
> >>
> >> ------------------------------
> >>
> >> _______________________________________________
> >> Iup-users mailing list
> >> Iup-users@lists.sourceforge.net
> >> https://lists.sourceforge.net/lists/listinfo/iup-users
> >>
> >>
> >> End of Iup-users Digest, Vol 77, Issue 2
> >> ****************************************
> >>
> >
> >
> >
> >
> ------------------------------------------------------------------------------
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>
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> Full-scale, agent-less Infrastructure Monitoring from a single dashboard
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>
> End of Iup-users Digest, Vol 77, Issue 4
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>
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