sprintf(buffer,"main: Create new thread for: %s recv_len=%d",inet_ntoa(client_addr.sin_addr),recv_len);
                  debug_print(buffer);
                  tmp = (struct SessionThread *)malloc (sizeof (struct SessionThread));
                  INIT_LIST_HEAD(&tmp->list);
                  tmp->flag_new_packet=true;
                  tmp->recv_len=recv_len;
                  sprintf(buffer1,"");
                  sprintf(buffer,"");
                  for(i=0;i<tmp->recv_len;i++)
                   { byte_read=recv_buff[i];
                     tmp->recv_buff[i]=byte_read;
                     sprintf(buffer1," 0x%02X",byte_read);
                     strcat(buffer,buffer1);
                   }
                  debug_print(buffer);
                  memcpy(&tmp->client_addr1,&client_addr,sizeof(struct sockaddr_in));
                  tmp->ptrdb=&dbinf;
                  tmp->live_thread=true;   // current thread is end;
                  tmp->bKill=false;         // signal from main to  thread to end work;
                  tmp->sockfd=sockfd;
                  list_add(&(tmp->list), &(Sessionlist.list));
                  thread_data=tmp;
                  status=pthread_create(&tmp->thread, NULL, threadFunc, thread_data);
                  if(status!=SUCCESS)
                  {   sprintf(buffer,"main error: can't create thread for: %s",inet_ntoa(client_addr.sin_addr));
                      debug_print(buffer);
                      tmp->live_thread=false;   // current thread is end;
                        // Clean the list from the end of sessions
                     list_for_each_safe(pos, q, &Sessionlist.list)
                    {
                     tmp = list_entry(pos, struct SessionThread, list);
                     if(tmp->live_thread==false)
                    {  sprintf (buffer,"main: freeing item %s ", inet_ntoa(tmp->client_addr1.sin_addr));
                        debug_print(buffer);
                        list_del(pos);
                        free (tmp);
                   }
              }// end loop for the list/////////////////////////////////////////////////////////////////////////////////////
             } // if(status!=SUCCESS)
                  sprintf(buffer,"main: thread=%d is created for: %s",tmp->thread,inet_ntoa(client_addr.sin_addr));
                  debug_print(buffer);

pthread_create 

 pthread_exit(0);

pthread_join 

pthread_exit(0)

pthread_detach 

 
// thread settings
 pthread_attr_t threadAttr; 
 pthread_attr_init(&threadAttr); 
 pthread_attr_setdetachstate(&threadAttr, PTHREAD_CREATE_DETACHED); 

..........................................

status=pthread_create(&tmp->thread, &threadAttr, threadFunc, thread_data);