Re: [Cppcms-users] Unmount asynchronous application from application pool

[Le Ba <hma...@gm...>]

Hi,

I think when the reference goes null with app.release() normally all object
are deleted but I don't know if the usage of applications_pool() is correct
or not.  Your opinion Artyom???

Sincerely.



2013/11/17 DieterM75 . <die...@gm...>

> Thanks for the hint!
>
> I sure was calling service.run twice...
>
> Nontheless I removed the call in the while loop, but I still get multiple
> messages written to the console. Is it possible that the service does not
> get stopped properly and its threads keep on running? If so, how can I
> securely delete my service object with all its threads? I thought
> I could use it the 'RAII' way...
>
> Sincerely
> Dieter
>
>
> On Sun, Nov 17, 2013 at 11:39 AM, Le Ba <hma...@gm...> wrote:
>
>> Excuse my poor English. I mean: I assume that you no longer need call
>> service.run () again in "while" block in "main". you have called
>> service.run () in the Activator constructor
>>
>>
>> 2013/11/15 DieterM75 . <die...@gm...>
>>
>>>  Hey,
>>>
>>> I tried the following code:
>>>
>>> http://pastie.org/8483126
>>>
>>> Output is as follows:
>>>
>>> 2013-11-15 18:31:25; Activator, debug: Created service! (main.cpp:70)
>>>
>>> 2013-11-15 18:31:25; App, debug: ctor (main.cpp:36)
>>>
>>> Exception!
>>>
>>> 2013-11-15 18:31:28; App, debug: dtor (main.cpp:39)
>>>
>>> 2013-11-15 18:31:48; main, debug: Restarting service! (main.cpp:106)
>>>
>>> 2013-11-15 18:34:43; Activator, debug: Created service! (main.cpp:70)
>>>
>>> 2013-11-15 18:34:43; Activator, debug: Created service! (main.cpp:70)
>>>
>>> 2013-11-15 18:34:43; App, debug: ctor (main.cpp:36)
>>>
>>> 2013-11-15 18:34:43; App, debug: ctor (main.cpp:36)
>>>
>>> Exception!
>>>
>>> 2013-11-15 18:35:33; App, debug: dtor (main.cpp:39)
>>>
>>> 2013-11-15 18:35:33; App, debug: dtor (main.cpp:39)
>>>
>>> 2013-11-15 18:35:40; main, debug: Restarting service! (main.cpp:106)
>>>
>>> 2013-11-15 18:35:40; main, debug: Restarting service! (main.cpp:106)
>>>
>>> 2013-11-15 18:41:44; Activator, debug: Created service! (main.cpp:70)
>>>
>>> 2013-11-15 18:41:44; Activator, debug: Created service! (main.cpp:70)
>>>
>>> 2013-11-15 18:41:44; Activator, debug: Created service! (main.cpp:70)
>>>
>>> 2013-11-15 18:41:44; App, debug: ctor (main.cpp:36)
>>>
>>> 2013-11-15 18:41:44; App, debug: ctor (main.cpp:36)
>>>
>>> 2013-11-15 18:41:44; App, debug: ctor (main.cpp:36)
>>>
>>> Exception!
>>>
>>> 2013-11-15 18:41:58; App, debug: dtor (main.cpp:39)
>>>
>>> 2013-11-15 18:41:58; App, debug: dtor (main.cpp:39)
>>>
>>> 2013-11-15 18:41:58; App, debug: dtor (main.cpp:39)
>>>
>>> 2013-11-15 18:43:16; main, debug: Restarting service! (main.cpp:106)
>>>
>>> 2013-11-15 18:43:16; main, debug: Restarting service! (main.cpp:106)
>>>
>>> 2013-11-15 18:43:16; main, debug: Restarting service! (main.cpp:106)
>>>
>>> 2013-11-15 18:43:22; Activator, debug: Created service! (main.cpp:70)
>>>
>>> 2013-11-15 18:43:22; Activator, debug: Created service! (main.cpp:70)
>>>
>>> 2013-11-15 18:43:22; Activator, debug: Created service! (main.cpp:70)
>>>
>>> 2013-11-15 18:43:22; Activator, debug: Created service! (main.cpp:70)
>>>
>>> 2013-11-15 18:43:22; App, debug: ctor (main.cpp:36)
>>>
>>> 2013-11-15 18:43:22; App, debug: ctor (main.cpp:36)
>>>
>>> 2013-11-15 18:43:22; App, debug: ctor (main.cpp:36)
>>>
>>> 2013-11-15 18:43:22; App, debug: ctor (main.cpp:36)
>>>
>>> Maybe someone sees the error in my code, I clearly dont :)
>>>
>>> Sincerely
>>> Dieter
>>>
>>>
>>> ---------- Forwarded message ----------
>>> From: Artyom Beilis <art...@ya...>
>>> Date: Sat, Nov 9, 2013 at 12:54 PM
>>> Subject: Re: [Cppcms-users] Unmount asynchronous application from
>>> application pool
>>> To: cpp...@li...
>>>
>>>
>>> There two things.
>>>
>>> - The tutorial describes the situation were the ENTIRE cppcms service is
>>> reloaded. In case of pointers to asynchronous applications, you can reset
>>> them withing if(got_sighup) { ... } section.
>>>
>>> Additionally you can remove the asynchronous application by simply
>>> expiring its pointer. Once all the references (for example kept in
>>> callbacks) and your reference are expired it would be deleted. Asynchronous
>>> applications can be removed and added dynamically (unlike synchronous ones
>>> that only can be added)
>>>
>>>
>>> Artyom Beilis
>>> --------------
>>> CppCMS - C++ Web Framework:   http://cppcms.com/
>>> CppDB - C++ SQL Connectivity: http://cppcms.com/sql/cppdb/
>>>
>>> --------------------------------------------
>>> On Fri, 11/8/13, DieterM75 . <die...@gm...> wrote:
>>>
>>>  Subject: [Cppcms-users] Unmount asynchronous application from
>>> application pool
>>>  To: cpp...@li...
>>>  Date: Friday, November 8, 2013, 9:58 AM
>>>
>>>  Hello,
>>>
>>>  I mount my application via the mount(booster::intrusive_ptr)
>>>  method of the application pool class.
>>>  I also try to implement some kind of reload mechanism,
>>>  so that the service can start over again after certain
>>>  errors.
>>>
>>>  The example "reload the application" (
>>> http://cppcms.com/wikipp/en/page/cppcms_1x_reload_application)
>>>  does not cover how to deal with asynchronous applications.
>>>  If I pass an anonymous intrusive_ptr reference to the
>>>  method, it gets created and destroyed immediately. Now if
>>>  the signal gets handled and the service shutdown, the
>>>  mounted application gets constructed and destroyed twice.
>>>  Basically every time the signal is processed, the
>>>  application pool does not automatically destroy the long
>>>  running apps.
>>>
>>>  Is there a way to avoid this problem?
>>>
>>>  Sincerely
>>>  Müller
>>>
>>>
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>
>
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