Server : Apache/2.4.41 (Ubuntu) System : Linux absol.cf 5.4.0-198-generic #218-Ubuntu SMP Fri Sep 27 20:18:53 UTC 2024 x86_64 User : www-data ( 33) PHP Version : 7.4.33 Disable Function : pcntl_alarm,pcntl_fork,pcntl_waitpid,pcntl_wait,pcntl_wifexited,pcntl_wifstopped,pcntl_wifsignaled,pcntl_wifcontinued,pcntl_wexitstatus,pcntl_wtermsig,pcntl_wstopsig,pcntl_signal,pcntl_signal_get_handler,pcntl_signal_dispatch,pcntl_get_last_error,pcntl_strerror,pcntl_sigprocmask,pcntl_sigwaitinfo,pcntl_sigtimedwait,pcntl_exec,pcntl_getpriority,pcntl_setpriority,pcntl_async_signals,pcntl_unshare, Directory :  /usr/local/n/versions/node/14.15.4/lib/node_modules/npm/node_modules/lockfile/

Upload File : current_dir [ Writeable ] document_root [ Writeable ]

to ACQUIRE(lockname)
- create server, listen on lockname
  - if enotsock, WATCH(lockname)
  - if eaddrinuse,
    - CONNECT(lockname)
  - unref server
  - lock has been acquired via server
  ! on connection, place sockets in queue

to RELEASE(lockname)
- if acquired via connection
  - disconnect
- if acquired via server
  - send "OK" to front-most connection
    - when connection disconnects, RELEASE(lockname)
- if acquired via filename
  - unlink file

to CONNECT(lockname)
- net.connect(lockname)
  - if enoent or socket termination, ACQUIRE(lockname)
  - when server says "OK",
    - lock has been acquired via connection

to WATCH(lockname)
- fs.watch(lockname)
- on change, ACQUIRE(lockname)