No.
On Tue, Feb 19, 2013 at 6:43 AM, Yun Li <[email protected]> wrote:
> Thanks, can I force or configure the process to go away when the custom
> action returns? Which will resolve my thread problem.
>
>
> On Tue, Feb 19, 2013 at 10:29 PM, Rob Mensching <[email protected]>wrote:
>
>> Yes plus there is no guarantee the process won't go away or that your CA
>> DLL won't get put into a different process. Best to assume as I described
>> above, your process always goes away.
>>
>>
>> On Tue, Feb 19, 2013 at 6:10 AM, Yun Li <[email protected]> wrote:
>>
>>> Hi,
>>>
>>> In my speculation, when WIX execute a custom action, it will do the
>>> following: (My custom action is in a DLL written with C++)
>>>
>>> 1. If there is no process for custom actions, it will create a process.
>>> 2. Load the DLL.
>>> 3. Execute the custom action function
>>> 4. Unload the DLL.
>>>
>>> However, the process won't exit after the custom action returns. (WIX
>>> will create one process for InstallUISequence custom actions, and one for
>>> InstallExecuteSequence custom actions).
>>>
>>> If I understand correctly of the above, then my problem will be:
>>> When the DLL is unloaded, there were threads created in the custom
>>> action function still running on the code of the DLL, then my thread get
>>> crashed.
>>>
>>> Is my understanding right?
>>>
>>> Thank you very much for your help!
>>>
>>> Thanks,
>>> Yun
>>>
>>>
>>> On Mon, Feb 18, 2013 at 11:42 PM, Rob Mensching
>>> <[email protected]>wrote:
>>>
>>>> 1. The Windows Installer creates separate processes for Custom Actions.
>>>> The WiX toolset does the same for managed custom actions for the reasons
>>>> Jacob pointed out.
>>>>
>>>> 2. Threads execute independently in a process. Unless you write code to
>>>> ensure one thread outlasts another (Thread.Join?) there is no guarantee
>>>> which threads still exists as threads exit.
>>>>
>>>>
>>>> On Sun, Feb 17, 2013 at 8:45 PM, Yun Li <[email protected]> wrote:
>>>>
>>>>> I'm using C++, and the thread is created when I initialize a HTTP
>>>>> request in custom action, i.e., it is created by Windows WinInet API
>>>>> HttpSendRequest().
>>>>> The http callback thread crashes when the custom action finishes.
>>>>> There will be an exception dialog appear when this problem happens,
>>>>> but the installation can continue to finish, seems it doesn't influence
>>>>> the
>>>>> main install process.
>>>>>
>>>>>
>>>>> On Mon, Feb 18, 2013 at 12:27 PM, Hoover, Jacob <
>>>>> [email protected]> wrote:
>>>>>
>>>>>> How exactly are you creating this thread? What language and
>>>>>> framework are you using?
>>>>>>
>>>>>> Sent from my iPhone
>>>>>>
>>>>>> On Feb 17, 2013, at 8:48 PM, "Yun Li" <[email protected]> wrote:
>>>>>>
>>>>>> Thanks for you reply.
>>>>>>
>>>>>> So if I understand correctly, actually WIX will create a process
>>>>>> for each custom action. However, I can't figure out why the http thread
>>>>>> created in the custom action doesn't exit when the process exit, it
>>>>>> continues to execute and leads to a crash when try to access heap
>>>>>> memories
>>>>>> in the process.
>>>>>> Is there a way to resolve this?
>>>>>>
>>>>>> Thanks!
>>>>>> Yun
>>>>>>
>>>>>> On Sun, Feb 17, 2013 at 12:12 AM, Hoover, Jacob <
>>>>>> [email protected]> wrote:
>>>>>>
>>>>>>> I believe this is caused by any .net ca being done in a separate
>>>>>>> stub process. Prior to .net 4, you could only have one version of the
>>>>>>> clr
>>>>>>> loaded during the life of the process. The wix fix which allows us to
>>>>>>> overcome this is using child stub processes and ipc to overcome this.
>>>>>>>
>>>>>>>
>>>>>>> On Feb 16, 2013, at 7:26 AM, "Yun Li" <[email protected]> wrote:
>>>>>>>
>>>>>>> Hi, WIX Devs
>>>>>>>
>>>>>>> Thanks for such a great tool!
>>>>>>>
>>>>>>> I have a problem developing my own installers with Wix.
>>>>>>> I defined several custom actions in a DLL, these functions share a
>>>>>>> same behavior that they need to send the instrumentation data to our
>>>>>>> server
>>>>>>> through HTTP request.
>>>>>>> When WIX calls a custom action, as my observation, it starts a new
>>>>>>> thread for the function, and the thread exits after the function is
>>>>>>> returned.
>>>>>>> However, the problem is when the thread exits, *the heap storage
>>>>>>> created in the custom action thread is also removed*! Which leads
>>>>>>> to a crash when HTTP callback thread tries to access the objects
>>>>>>> created in
>>>>>>> the heap.
>>>>>>> What described above is only my observation, I just want to confirm
>>>>>>> whether this is really the memory management method of thread adopted by
>>>>>>> WIX (something like ThreadLocal, if I understand correctly), therefore
>>>>>>> we
>>>>>>> can think about other ways for solution.
>>>>>>>
>>>>>>> Thanks,
>>>>>>> Yun
>>>>>>>
>>>>>>>
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