buildroot.py 文件源码

def _lock_buildroot(self, exclusive):
        lock_type = fcntl.LOCK_EX if exclusive else fcntl.LOCK_SH
        if not self._lock_file:
            self._open_lock()
        try:
            fcntl.lockf(self._lock_file.fileno(), lock_type | fcntl.LOCK_NB)
        except IOError:
            raise BuildRootLocked("Build root is locked by another process.")