wspbus.py 文件源码

def _do_execv(self):
        """Re-execute the current process.

        This must be called from the main thread, because certain platforms
        (OS X) don't allow execv to be called in a child thread very well.
        """
        args = sys.argv[:]
        self.log('Re-spawning %s' % ' '.join(args))

        self._extend_pythonpath(os.environ)

        if sys.platform[:4] == 'java':
            from _systemrestart import SystemRestart
            raise SystemRestart
        else:
            args.insert(0, sys.executable)
            if sys.platform == 'win32':
                args = ['"%s"' % arg for arg in args]

            os.chdir(_startup_cwd)
            if self.max_cloexec_files:
                self._set_cloexec()
            os.execv(sys.executable, args)