thread blocks/freezes the main gui

[Anca Mitrica <ancamitrica yahoo com>]

Hello,

I am writing an application that communicates, between
others, with another program (server) through pipes.
My application has a textview and a button that sends
the textview content to the server.
The communication is made via a thread wich writes to
the standard input of the server the textview content.
The server is run with g_spawn_async_with_pipes.

Somehow, the writing thread is blocking the main user
interface, that must be active all the time. Can
anyone has an idea??

The code is the following:

//the button function 
...........................................................
//run the server
g_spawn_async_with_pipes(NULL,argv,NULL,(GSpawnFlags)(G_SPAWN_DO_NOT_REAP_CHILD),NULL,NULL,
			  
&stat_autochildpid,&childstdin,&childstdout,&childstderr,&error)){
			    	
			//sauver le pid du processus bvl_serveur
			save_auto_pid(stat_autochildpid);
			//attends que le processus se termine
			g_spawn_close_pid(stat_autochildpid);
		}
envoyer_directive_courrante();

..................................................
//envoyer_directive_courrante  function
void MainPage::envoyer_directive_courrante(){

	//envoit une directive au bvl_serveur
	send_dir_thread =
Glib::Thread::create(sigc::mem_fun(*this,&MainPage::ecrire_entree_standard),true);
	send_dir_thread->join();
}
...........................................
//function for the thread
void MainPage::ecrire_entree_standard(){

        line_to_send = *stat_diriterator;		

line_to_send.erase(0,line_to_send.find_first_of(",",0)+1);

	Glib::RefPtr<Glib::IOChannel> in_channel =
Glib::IOChannel::create_from_fd(childstdin);
	in_channel->write(line_to_send);	
	//in_channel->close();
	/* for(unsigned int i = 0;i<line_to_send.size();i++){
		cout<<line_to_send[i];
	}
	cout<<endl; */
	
	
	
	//stat_diriterator++;
}


Anca Mitrica

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