[Cppcms-users] Segmentaion fault occurs to booster::aio::io_service running in booster::thread

[CN <cn...@fa...>]

File "t.cpp":

#include <booster/aio/io_service.h>
#include <cppcms/service.h>
#include <boost/bind.hpp>
#include <booster/shared_ptr.h>
#include <booster/log.h>
#include <signal.h>
booster::shared_ptr<cppcms::service> this_cppcms_service;
static int caught_signal=-1;

void signal_handler(int signal_number)
{
	BOOSTER_DEBUG("begin handler");
	caught_signal=signal_number;
	this_cppcms_service->shutdown();
	BOOSTER_DEBUG("end handler");
}

class my_class {
private:
	booster::aio::io_service io_service;
public:
	void start(){
		io_service.run();
	}
	void stop(){
		io_service.stop();
	}
};


int main(int argc,char ** argv)
{
	while(true){
		try{
			this_cppcms_service.reset(new
			cppcms::service(argc,argv));
			//Install signals catchers.
			struct sigaction actions;
			memset(&actions,0,sizeof(actions));
			actions.sa_handler=signal_handler;
			int result;
			if(
				(result=sigaction(SIGTERM,&actions,NULL))
				!= 0
				||
				(result=sigaction(SIGHUP,&actions,NULL))
				!= 0
			){
				BOOSTER_ERROR("") << "sigaction()
				failed";
				exit(EXIT_FAILURE);
			}
			my_class mc;
			booster::thread
			mc_thread(boost::bind(&my_class::start,&mc));

BOOSTER_DEBUG("==1==");
			this_cppcms_service->run();
BOOSTER_DEBUG("==2==");
			mc.stop(); mc_thread.join();
BOOSTER_DEBUG("==3==");
			if(caught_signal == SIGTERM)
				return 0;
BOOSTER_DEBUG("==4==");
			//SIGHUP to reload configurations
		}
		catch(std::exception const &e){
			BOOSTER_ERROR("") << e.what();
			return 1;
		}
	}
	return 0;
}

----------

File "t.js":

{
	"service" : {
		"api" : "fastcgi",
		"socket" : "/tmp/t.sock",
		"disable_global_exit_handling":true
	},
	"daemon":{
		"enable":true,
		"lock":"/tmp/t.pid"
	},
	"logging" : {
		"level" : "debug",
		"stderr" : false,
		"syslog" : {
			"enable":true,
			"id" : "t"
		}
	}
}

--------

Commands issued:

cd /tmp
g++ -lbooster -lcppcms -lboost_system t.cpp
./a.out -c t.js
kill -TERM `cat t.pid`

--------

File "/var/log/syslog":

May  8 21:36:13 host t: ==1==:  (t.cpp:51)
May  8 21:36:36 host t: begin handler:  (t.cpp:12)
May  8 21:36:36 host t: end handler:  (t.cpp:15)
May  8 21:36:36 host t: ==2==:  (t.cpp:53)
May  8 21:36:36 host kernel: a.out[5146]: segfault at b5b5dba8 ip
b715205e sp bfad0620 error 4 in libpthread-2.19.so[b714a000+18000]


With this simple code, I get segfault at "mc.stop(); mc_thread.join();"
after issuing command "kill -TERM <pid>". Would someone please enlighten
me why?

Best regards,
CN

-- 
http://www.fastmail.com - Accessible with your email software
                          or over the web