I see this from time to time, rectified with 'sudo pkill wsjtx' and

then no problem to start a new session.. If linux > wsjtx ran a startup script killing first,

then there would never be an issue.


73


Adrian Fewster

On 5/11/22 22:56, leo bistmans via wsjt-devel wrote:
Via strace I saw the lock file that is not there is /tmp/WSJT-X ... .lock


openat(AT_FDCWD, "/tmp/WSJT-X - ft-891.lock", O_RDWR|O_CREAT|O_EXCL|O_CLOEXEC, 0666) = 13
flock(13, LOCK_EX|LOCK_NB)              = 0

If I create it myself with touch,  the switch code below is used instead of throwing the fatal error.

      The code in main.cpp:

      // disallow multiple instances with same instance key
      QLockFile instance_lock {temp_dir.absoluteFilePath (a.applicationName () + ".lock")};
      instance_lock.setStaleLockTime (0);
      while (!instance_lock.tryLock ())
        {
          if (QLockFile::LockFailedError == instance_lock.error ())
            {
              auto button = MessageBox::query_message (nullptr
                                                       , "Another instance may be running"                                                        , "try to remove stale lock file?"
                                                       , QString {}
                                                       , MessageBox::Yes | MessageBox::Retry | MessageBox::No
                                                       , MessageBox::Yes);
              switch (button)
                {
                case MessageBox::Yes:
                  instance_lock.removeStaleLockFile ();
                  break;

                case MessageBox::Retry:
                  break;

                default:
                  throw std::runtime_error {"Multiple instances must have unique rig names"};
                }
            }
          else
            {
              throw std::runtime_error {"Failed to access lock file"};
            }
        }

The reason that I do not have the .lock file in /tmp is an open question to me ( possibly a disk full condition? ). However I think it is fairly safe for wsjt-x to just start instead of forcing me to reboot my PC.

73 de on1aad



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