Hang in the Strand impl during shutdown.

[Wayonb]

Hi,

I am seeing an issue where the task dispatch to a strand is not completing during shutdown. The problem is that the running_in_this_thread always return false. I think strands thinks the task is running on another thread? env: Boost 1.86.0 GCC 12/13 Ubuntu

  // If we are already in the strand then the handler can run immediately.
  if (running_in_this_thread(impl))
  {
    fenced_block b(fenced_block::full);
    static_cast<Handler&&>(handler)();
    return;
  }

bool strand_service::running_in_this_thread(
    const implementation_type& impl) const
{
  return call_stack<strand_impl>::contains(impl) != 0;
}

(gdb) list
91	  // Determine whether the specified owner is on the stack. Returns address of
92	  // key if present, 0 otherwise.
93	  static Value* contains(Key* k)
94	  {
95	    context* elem = top_;
96	    while (elem)
97	    {
98	      if (elem->key_ == k)
99	        return elem->value_;
100	      elem = elem->next_;
(gdb) info locals
elem = 0x0

(gdb) info args
k = 0x5555563d0cd0

(gdb) print *k
$22 = {<boost::asio::detail::scheduler_operation> = {next_ = 0x0, func_ = 0x7fffbdaf1bf0 <boost::asio::detail::strand_service::do_complete(void*, boost::asio::detail::scheduler_operation*, boost::system::error_code const&, unsigned long)>, task_result_ = 0}, mutex_ = {<boost::asio::detail::noncopyable> = {<No data fields>}, mutex_ = {__data = {__lock = 0, __count = 0, __owner = 0, __nusers = 0, __kind = 0, __spins = 0, __elision = 0, __list = {__prev = 0x0, __next = 0x0}}, __size = "" = {0 '\000', 0 '\000', 0 '\000', 0 '\000', 0 '\000', 0 '\000', 0 '\000', 0 '\000', 0 '\000', 0 '\000', 0 '\000', 0 '\000', 0 '\000', 0 '\000', 0 '\000', 0 '\000', 0 '\000', 0 '\000', 0 '\000', 0 '\000', 0 '\000', 0 '\000', 0 '\000', 0 '\000', 0 '\000', 0 '\000', 0 '\000', 0 '\000', 0 '\000', 0 '\000', 0 '\000', 0 '\000', 0 '\000', 0 '\000', 0 '\000', 0 '\000', 0 '\000', 0 '\000', 0 '\000', 0 '\000'}, __align = 0}}, locked_ = true, waiting_queue_ = {<boost::asio::detail::noncopyable> = {<No data fields>}, front_ = 0x0, back_ = 0x0}, ready_queue_ = {<boost::asio::detail::noncopyable> = {<No data fields>}, front_ = 0x7ffdd8000dd0, back_ = 0x7ffdd8000dd0}}

(gdb) print top_
$23 = {<boost::asio::detail::keyword_tss_ptr<boost::asio::detail::call_stack<boost::asio::detail::strand_service::strand_impl>::context>> = {<boost::asio::detail::noncopyable> = {<No data fields>}, static value_ = 0x0}, <No data fields>}