process.py 文件源码

def _resetSignalDisposition(self):
        # The Python interpreter ignores some signals, and our child
        # process will inherit that behaviour. To have a child process
        # that responds to signals normally, we need to reset our
        # child process's signal handling (just) after we fork and
        # before we execvpe.
        for signalnum in xrange(1, signal.NSIG):
            if signal.getsignal(signalnum) == signal.SIG_IGN:
                # Reset signal handling to the default
                signal.signal(signalnum, signal.SIG_DFL)