Endless shutdown

[lucaderi]

(lldb) bt

• thread Trigger Host Alert #1, queue = 'com.apple.main-thread', stop reason = signal SIGSTOP
  • frame #0: 0x00007fff69d8bd82 libsystem_kernel.dylib__semwait_signal + 10 frame #1: 0x00007fff69f57824 libsystem_pthread.dylib_pthread_join + 626
    frame ERROR: Unable to start HTTP server  #2: 0x000000010d28974c ntopngThreadPool::~ThreadPool(this=0x00007fd85fee6de0) at ThreadPool.cpp:68 frame #3: 0x000000010d289ae5 ntopngThreadPool::~ThreadPool(this=0x00007fd85fee6de0) at ThreadPool.cpp:59
    frame Missing dependency on OS/X Yosemite #4: 0x000000010d289b09 ntopngThreadPool::~ThreadPool(this=0x00007fd85fee6de0) at ThreadPool.cpp:59 frame #5: 0x000000010d252ca4 ntopngPeriodicActivities::~PeriodicActivities(this=0x00007fd859402500) at PeriodicActivities.cpp:62
    frame host alert thresholds #6: 0x000000010d252ed5 ntopngPeriodicActivities::~PeriodicActivities(this=0x00007fd859402500) at PeriodicActivities.cpp:50 frame #7: 0x000000010d23db94 ntopngNtop::shutdownPeriodicActivities(this=0x00007fd85b003c00) at Ntop.cpp:2719
    frame added meta tag 'X-UA-Compatible' #8: 0x000000010d23dd0f ntopngNtop::shutdownAll(this=0x00007fd85b003c00) at Ntop.cpp:2748 frame #9: 0x000000010d2d4544 ntopngmain(argc=3, argv=0x00007ffee2b3d9a0) at main.cpp:421
    frame Merge branch 'dev' #10: 0x00007fff69c3b015 libdyld.dylibstart + 1 (lldb) frame #2: 0x000000010d28974c ntopngThreadPool::~ThreadPool(this=0x00007fd85fee6de0) at ThreadPool.cpp:68
    65 #ifdef THREAD_DEBUG
    66 ntop->getTrace()->traceEvent(TRACE_NORMAL, "Threads still running %d", pool_size-i);
    67 #endif
    -> 68 pthread_join(it, &res);
    69 }
    70
    71 threadsState.clear();
    (lldb)
    frame Add netfilter support #5: 0x000000010d252ca4 ntopng`PeriodicActivities::~PeriodicActivities(this=0x00007fd859402500) at PeriodicActivities.cpp:62
    59
    60 / This will terminate any possibly running activities into the ThreadPool::run */
    61 if(standard_priority_pool) delete standard_priority_pool;
    -> 62 if(longrun_priority_pool) delete longrun_priority_pool;
    63 if(timeseries_pool) delete timeseries_pool;
    64 if(notifications_pool) delete notifications_pool;
    65 if(periodic_user_scripts_pool) delete periodic_user_scripts_pool;

[lucaderi]

Fixed by c9f18c9

[lucaderi]

Unfortunately it seems that there are cases where shutdown does not end. Example when SNMP polling is in progress systemd waits a bit and then kills the app. This means that ntopng restart after package upgrade won't work as ntopng is still down
root@ntop:/home/deri# service ntopng status

• ntopng.service - ntopng high-speed web-based traffic monitoring and analysis tool
  Loaded: loaded (/etc/systemd/system/ntopng.service; disabled; vendor preset: enabled)
  Active: inactive (dead)

[lucaderi]

This issue seems to be fixed in the latest version