Windows, Hello World (server) crashes in release

[AldrichChen]

I am trying to start a tiny service on my pc. And I copy the example provided in README entirely.
Then I use service_setup_ex.exe to register the service on my pc. The problem shows as soon as I click start the service.

Since I cannot debug a "server" mode app, I change the mode to "common". Then I found the crash happens at
my_log_file_ << "Start Log..." << std::endl;
It prompts to show an "Access Violation" exception.

But this only happens in release mode, not in debug mode.

Besides, I also have a try on the simple_server_example. The same problems happened.

[refi64]

Were you ever able to solve this?

[snikulov]

@kirbyfan64 could you please confirm this issue on latest master?

[refi64]

Looks like it...if I build in debug instead, I get:

Assertion failed: px != 0, file C:\boost_1_65\boost/smart_ptr/shared_ptr.hpp, line 734

I'll check out a debugger for an actual traceback...

[refi64]

Traceback:

* thread #4, stop reason = breakpoint 1.3
    frame #0: 0x5887ea40 ucrtbased.dll`abort
    frame #1: 0x588830dd ucrtbased.dll`_get_wide_winmain_command_line + 7549
    frame #2: 0x58882d89 ucrtbased.dll`_get_wide_winmain_command_line + 6697
    frame #3: 0x5888142d ucrtbased.dll`_get_wide_winmain_command_line + 205
    frame #4: 0x588833fa ucrtbased.dll`_wassert + 26
    frame #5: 0x009ce493 simple_server_application.exe`boost::detail::win32::handle_manager::operator void *(void)const  + 579
  * frame #6: 0x009b1484 simple_server_application.exe
    frame #7: 0x009b2234 simple_server_application.exe
    frame #8: 0x009e70be simple_server_application.exe`void boost::thread::yield(void) + 7422
    frame #9: 0x009e6fe0 simple_server_application.exe`void boost::thread::yield(void) + 7200
    frame #10: 0x009e6e8d simple_server_application.exe`void boost::thread::yield(void) + 6861
    frame #11: 0x009e7128 simple_server_application.exe`void boost::thread::yield(void) + 7528
    frame #12: 0x76f48744 kernel32.dll`BaseThreadInitThunk + 36
    frame #13: 0x7797582d ntdll.dll`RtlGetAppContainerNamedObjectPath + 253
    frame #14: 0x779757fd ntdll.dll`RtlGetAppContainerNamedObjectPath + 205

Yes, this sucks, but I can't get lldb to read pdb info, and I'm still trying to get a Clang build working...

[Kojoley]

I tried the example from readme in common mode and it did not crash for me. (VS2015, VS2017)

Click to expand

#define BOOST_APPLICATION_FEATURE_NS_SELECT_BOOST

#include <iostream>
#include <fstream>

#include <boost/application.hpp>

using namespace boost;

// my application code

class myapp
{   
public:

   myapp(application::context& context)
      : context_(context)
   {
   }

   void worker()
   {
      // my application behaviour

      // dump args

      std::vector<std::string> arg_vector = 
         context_.find<application::args>()->arg_vector();

      my_log_file_ << "-----------------------------" << std::endl;
      my_log_file_ << "---------- Arg List ---------" << std::endl;
      my_log_file_ << "-----------------------------" << std::endl;

      // only print args on screen
      for(std::vector<std::string>::iterator it = arg_vector.begin(); 
         it != arg_vector.end(); ++it) {
         my_log_file_ << *it << std::endl;
      }

      my_log_file_ << "-----------------------------" << std::endl;

      // run logic

      boost::shared_ptr<application::status> st =          
         context_.find<application::status>();

      for(int count = 0; st->state() != application::status::stopped && count < 50; ++count)
      {
         boost::this_thread::sleep(boost::posix_time::milliseconds(100));

         if(st->state() == application::status::paused)
            my_log_file_ << count << ", paused..." << std::endl;
         else
            my_log_file_ << count << ", running..." << std::endl;
      }
   }

   // param
   int operator()()
   {
      std::string logfile 
         = context_.find<application::path>()->executable_path().string() + "/log.txt";
      
      my_log_file_.open(logfile.c_str());
      my_log_file_ << "Start Log..." << std::endl;

#if 0
      // launch a work thread
      *boost::thread thread(&myapp::worker, this);
      
      context_.find<application::wait_for_termination_request>()->wait();
#else
      // to run direct
      worker();
#endif

      return 0;
   }

   // windows/posix

   bool stop()
   {
      my_log_file_ << "Stoping my application..." << std::endl;
      my_log_file_.close();

      return true; // return true to stop, false to ignore
   }

   // windows specific (ignored on posix)

   bool pause()
   {
      my_log_file_ << "Pause my application..." << std::endl;
      return true; // return true to pause, false to ignore
   }

   bool resume()
   {
      my_log_file_ << "Resume my application..." << std::endl;
      return true; // return true to resume, false to ignore
   }

private:

   std::ofstream my_log_file_;
   application::context& context_;

};

int main(int argc, char *argv[])
{ 
  application::context app_context;
   
   // auto_handler will automatically add termination, pause and resume (windows) handlers
   application::auto_handler<myapp> app(app_context);

   // my server aspects

   // to handle args
   app_context.insert<application::args>(
      boost::make_shared<application::args>(argc, argv));  

   // my server instantiation

   boost::system::error_code ec;
   int result = application::launch<application::common/*server*/>(app, app_context, ec);

   if(ec)
   {
      std::cout << "[E] " << ec.message() 
         << " <" << ec.value() << "> " << std::endl;
   }
   
   return result;
}

[snikulov]

@kirbyfan64 @AldrichChen Could you please confirm that issue is gone, or provide MCVE for the issue?

Thank you.

P.S.
Example of MCVE here.