nanogui: Thread: about signal interrupt blocking system function

Subject: about signal interrupt blocking system function
From: "yi xia" ####@####.####
Date: 14 Feb 2008 09:01:14 -0000
Message-Id: <f51a5c070802140100m1e072e65x230a2fd381e68e35@mail.gmail.com>

Hi All,

I have a question that in microwin, why I can not see any code that deal
with the signal interrupt of blocking slow system function, such as select,
read, write , etc.

Do we need a TEMP_FAILURE_RETRY macro?

Best regards

XiaYi

Subject: Re: [nanogui] about signal interrupt blocking system function
From: "Uwe Klatt" ####@####.####
Date: 14 Feb 2008 09:20:57 -0000
Message-Id: <012001c86eea$dddf2310$080814ac@arnstein.miwe.de>

yi xia wrote:
> I have a question that in microwin, why I can not see any code that
> deal with the signal interrupt of blocking slow system function, such
> as select, read, write , etc.
> Do we need a TEMP_FAILURE_RETRY macro?

I prefer different threads for blocking calls...

Bye
Uwe

Subject: Re: [nanogui] about signal interrupt blocking system function
From: "yi xia" ####@####.####
Date: 14 Feb 2008 09:29:38 -0000
Message-Id: <f51a5c070802140129p69ff6284pedf489d990af4c15@mail.gmail.com>

Hi Uwe,
In different threads, can get rid of EINTR signal to interrupt the slow
system call?

Regards
Max


2008/2/14, Uwe Klatt ####@####.####
>
> yi xia wrote:
> > I have a question that in microwin, why I can not see any code that
> > deal with the signal interrupt of blocking slow system function, such
> > as select, read, write , etc.
> > Do we need a TEMP_FAILURE_RETRY macro?
>
> I prefer different threads for blocking calls...
>
> Bye
> Uwe
>
>

Subject: Re: [nanogui] about signal interrupt blocking system function
From: "Uwe Klatt" ####@####.####
Date: 14 Feb 2008 09:51:44 -0000
Message-Id: <002a01c86eef$27d10cf0$080814ac@arnstein.miwe.de>

yi xia wrote:
> In different threads, can get rid of EINTR signal to interrupt the
> slow system call?

Sorry, I dont understand, what you mean.

Bye
Uwe

Subject: Re: [nanogui] about signal interrupt blocking system function
From: "Greg Haerr" ####@####.####
Date: 14 Feb 2008 17:51:17 -0000
Message-Id: <017401c86f32$2a7ecc60$6501a8c0@winXP>

: In different threads, can get rid of EINTR signal to interrupt the slow
: system call?

No, if that thread's system call gets interrupted the call will still
return EINTR.

What is your issue with interrupted system calls with nano-X?
In GsSelect, it doesn't matter, since an interrupted call would
just sweep the returned file descriptors for any activity. 
(nanox/srvmain.c)
The  client/server pipe read/write calls are protected and will retry. 
(nanox/client.c)

Regards,

Greg

Subject: Re: [nanogui] about signal interrupt blocking system function
From: "yi xia" ####@####.####
Date: 15 Feb 2008 01:00:04 -0000
Message-Id: <f51a5c070802141659t1fa82507o6088130fbe0ecc55@mail.gmail.com>

Hi Greg,

Thanks again for you reply, I have reviewed your code, you are correct!

Max


2008/2/15, Greg Haerr ####@####.####
>
> : In different threads, can get rid of EINTR signal to interrupt the slow
> : system call?
>
> No, if that thread's system call gets interrupted the call will still
> return EINTR.
>
> What is your issue with interrupted system calls with nano-X?
> In GsSelect, it doesn't matter, since an interrupted call would
> just sweep the returned file descriptors for any activity.
> (nanox/srvmain.c)
> The  client/server pipe read/write calls are protected and will retry.
> (nanox/client.c)
>
> Regards,
>
> Greg
>
>