Groups > comp.lang.c++ > #120705

Re: thread_local question...

From	jseigh <jseigh_es00@xemaps.com>
Newsgroups	comp.lang.c++
Subject	Re: thread_local question...
Date	2024-10-11 17:05 -0400
Organization	A noiseless patient Spider
Message-ID	<vec3ut$3q5q6$1@dont-email.me> (permalink)
References	<ve7cj8$2vun0$1@dont-email.me> <ve8f6l$34vt2$1@dont-email.me> <ve98fe$392tv$2@dont-email.me> <vebael$3make$1@dont-email.me>

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On 10/11/24 09:50, 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.

Correction.  atexit is for process exit not thread exit.  So those
start_ functions are where they are doing the exit handling.

Joe Seigh

Thread

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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