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Re: thread_local question...

From "Chris M. Thomasson" <chris.m.thomasson.1@gmail.com>
Newsgroups comp.lang.c++
Subject Re: thread_local question...
Date 2024-10-20 19:12 -0700
Organization A noiseless patient Spider
Message-ID <vf4db2$l6cb$6@dont-email.me> (permalink)
References <ve7cj8$2vun0$1@dont-email.me> <ve8f6l$34vt2$1@dont-email.me> <ve98fe$392tv$2@dont-email.me> <9dc17426ed663b192a4e1467b8fc488e6be377bd.camel@gmail.com>

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On 10/10/2024 12:20 PM, wij wrote:
[...]

Check this shit out:

Here is my crude code:
_______________________________________
#include <iostream>
#include <functional>
#include <thread>
#include <atomic>
#include <mutex>


#define CT_THREADS 5


struct ct_shared
{
     std::mutex m_cout_lock;
};


struct ct_per_thread
{
     ct_shared& m_shared;
     unsigned long m_id;

     ct_per_thread(
         ct_shared& shared,
         unsigned long id

     ):  m_shared(shared),
         m_id(id)
     {
         {
             std::unique_lock<std::mutex> lock(m_shared.m_cout_lock);
             std::cout << "ct_per_thread::ct_per_thread(" << m_id << ")" 
<< std::endl;
         }
     }

     ~ct_per_thread()
     {
         {
             std::unique_lock<std::mutex> lock(m_shared.m_cout_lock);
             std::cout << "ct_per_thread::~ct_per_thread(" << m_id << 
")" << std::endl;
         }
     }
};



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
) {
     {
         thread_local ct_per_thread self(shared, id);

         g_per_thread = &self;
     }

     ct_foo();
}


int
main()
{
     std::cout << "ct_plot_pre_alpha... Testing 123! :^)\n\n";
     std::cout << "_____________________________________________" << 
std::endl;

     {
         ct_shared shared;

         {
             std::thread threads[CT_THREADS];

             std::cout << "launching " << CT_THREADS << " threads..." << 
std::endl;

             for (unsigned long i = 0; i < CT_THREADS; ++i)
             {
                 threads[i] = std::thread(ct_thread, std::ref(shared), i);
             }

             for (unsigned long i = 0; i < CT_THREADS; ++i)
             {
                 threads[i].join();
             }
         }
     }

     std::cout << "_____________________________________________\n";
     std::cout << "complete!\n";

     return 0;
}
_______________________________________

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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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