// Purpose: implements wxSingleInstanceChecker class for Unix using
// lock files with fcntl(2) or flock(2)
// Author: Vadim Zeitlin
// Purpose: implements wxSingleInstanceChecker class for Unix using
// lock files with fcntl(2) or flock(2)
// Author: Vadim Zeitlin
// if another instance is running, it must own the lock file - otherwise
// we have it and the locker PID is ours one
// if another instance is running, it must own the lock file - otherwise
// we have it and the locker PID is ours one