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Re: thread_local question...

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On 10/11/2024 6:50 AM, jseigh wrote:
> On 10/10/24 15:04, Chris M. Thomasson wrote:
>> On 10/10/2024 4:52 AM, jseigh wrote:
>>> On 10/9/24 22:02, Chris M. Thomasson wrote:
>>>> How can I get access to self in my ct_foo() function below? Am I 
>>>> misusing thread_local here? I want self to be able to be accessible 
>>>> from any function that my ct_thread() function calls. It feels like 
>>>> I am doing something wrong here. However, I am getting correct 
>>>> ctor's and dtor's, I am not sure how to access self from ct_foo() 
>>>> called from ct_thread()?
>>>>
>>>
>>> std::thread::id id = std::this_thread::get_id();
>>>
>>> C tss uses a thread local array I think but I don't know
>>> it gets notification on individual thread exits so it
>>> can run the dtor.  C++ has a cvar notify all on thread
>>> exits.
>>>
>>> I have a different hack which I won't get around to
>>> until I need it.
>>
>> I still don't know how C++ calls dtors wrt per-thread objects via 
>> thread_local. My hack would be to use tss_create and be done with it.
>>
> 
> Ok, it looks like they are using libc atexit function (stdlib.h) to
> invoke tls cleanup on thread exit.

Thanks for all of the info Joe! I have an idea that might allow me to 
get a dtor called from thread_local in my test code. I just need to try 
it. Wrt:
_________________________________

thread_local ct_per_thread* g_per_thread = nullptr;


void
ct_foo()
{
     // Okay, what about this shit!
     {
         std::unique_lock<std::mutex> 
lock(g_per_thread->m_shared.m_cout_lock);
         std::cout << "ct_foo(" << g_per_thread->m_id << ")" << std::endl;
     }
}


void
ct_thread(
     ct_shared& shared,
     unsigned long id
) {
     ct_per_thread self(shared, id);

     g_per_thread = &self;

     ct_foo();
}
_________________________________


Well, what if I made self in ct_thread thread_local as well? That should 
call self's dtor deeper down the pipe, so to speak. Humm... It should 
work fine. Then any function that ct_thread calls would be able to 
access self via g_per_thread...

;^)

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thread_local question... "Chris M. Thomasson" <chris.m.thomasson.1@gmail.com> - 2024-10-09 19:02 -0700
  Re: thread_local question... "Chris M. Thomasson" <chris.m.thomasson.1@gmail.com> - 2024-10-09 19:08 -0700
  Re: thread_local question... Andrey Tarasevich <andreytarasevich@hotmail.com> - 2024-10-09 19:33 -0700
    Re: thread_local question... Andrey Tarasevich <andreytarasevich@hotmail.com> - 2024-10-09 19:40 -0700
      Re: thread_local question... "Chris M. Thomasson" <chris.m.thomasson.1@gmail.com> - 2024-10-09 20:08 -0700
    Re: thread_local question... "Chris M. Thomasson" <chris.m.thomasson.1@gmail.com> - 2024-10-09 20:19 -0700
  Re: thread_local question... jseigh <jseigh_es00@xemaps.com> - 2024-10-10 07:52 -0400
    Re: thread_local question... "Chris M. Thomasson" <chris.m.thomasson.1@gmail.com> - 2024-10-10 12:04 -0700
      Re: thread_local question... wij <wyniijj5@gmail.com> - 2024-10-11 03:20 +0800
        Re: thread_local question... "Chris M. Thomasson" <chris.m.thomasson.1@gmail.com> - 2024-10-20 19:12 -0700
          Re: thread_local question... wij <wyniijj5@gmail.com> - 2024-10-21 19:06 +0800
            Re: thread_local question... wij <wyniijj5@gmail.com> - 2024-10-21 19:20 +0800
      Re: thread_local question... jseigh <jseigh_es00@xemaps.com> - 2024-10-10 15:57 -0400
        Re: thread_local question... "Chris M. Thomasson" <chris.m.thomasson.1@gmail.com> - 2024-10-11 13:36 -0700
      Re: thread_local question... jseigh <jseigh_es00@xemaps.com> - 2024-10-11 09:50 -0400
        Re: thread_local question... "Chris M. Thomasson" <chris.m.thomasson.1@gmail.com> - 2024-10-11 12:21 -0700
          Re: thread_local question... "Chris M. Thomasson" <chris.m.thomasson.1@gmail.com> - 2024-10-11 22:53 -0700
            Re: thread_local question... "Chris M. Thomasson" <chris.m.thomasson.1@gmail.com> - 2024-10-11 22:56 -0700
        Re: thread_local question... jseigh <jseigh_es00@xemaps.com> - 2024-10-11 17:05 -0400
          Re: thread_local question... "Chris M. Thomasson" <chris.m.thomasson.1@gmail.com> - 2024-10-12 13:44 -0700
            Re: thread_local question... "Chris M. Thomasson" <chris.m.thomasson.1@gmail.com> - 2024-10-12 13:46 -0700
  Re: thread_local question... "Chris M. Thomasson" <chris.m.thomasson.1@gmail.com> - 2024-10-12 13:29 -0700
    Re: thread_local question... "Chris M. Thomasson" <chris.m.thomasson.1@gmail.com> - 2024-10-12 13:43 -0700

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