我们从Python开源项目中，提取了以下17个代码示例，用于说明如何使用signal.SIGTSTP。
def make_default_signal_map(): """ Make the default signal map for this system. :return: A mapping from signal number to handler object. The signals available differ by system. The map will not contain any signals not defined on the running system. """ name_map = { 'SIGTSTP': None, 'SIGTTIN': None, 'SIGTTOU': None, 'SIGTERM': 'terminate', } signal_map = dict( (getattr(signal, name), target) for (name, target) in name_map.items() if hasattr(signal, name)) return signal_map
def suspend_to_background(self, suspend_group=True): """ (Not thread safe -- to be called from inside the key bindings.) Suspend process. :param suspend_group: When true, suspend the whole process group. (This is the default, and probably what you want.) """ # Only suspend when the opperating system supports it. # (Not on Windows.) if hasattr(signal, 'SIGTSTP'): def run(): # Send `SIGSTP` to own process. # This will cause it to suspend. # Usually we want the whole process group to be suspended. This # handles the case when input is piped from another process. if suspend_group: os.kill(0, signal.SIGTSTP) else: os.kill(os.getpid(), signal.SIGTSTP) self.run_in_terminal(run)
def suspend_to_background(self, suspend_group=True): """ (Not thread safe -- to be called from inside the key bindings.) Suspend process. :param suspend_group: When true, suspend the whole process group. (This is the default, and probably what you want.) """ # Only suspend when the opperating system supports it. # (Not on Windows.) if hasattr(signal, 'SIGTSTP'): def run(): # Send `SIGSTP` to own process. # This will cause it to suspend. # Usually we want the whole process group to be suspended. This # handles the case when input is piped from another process. if suspend_group: os.kill(0, signal.SIGTSTP) else: os.kill(os.getpid(), signal.SIGTSTP) run_in_terminal(run)
def __enter__(self): # Make sure to cleanup GPIO afterward if not self.__signals_trapped: self.__signals_trapped = True for sig in [signal.SIGQUIT, signal.SIGTERM, signal.SIGTSTP]: if hasattr(signal.getsignal(sig), '__call__'): deleg = signal.getsignal(sig) def delegate(signum, stack): self.__exit__(None, None, None) deleg(signum, stack) signal.signal(sig, delegate) else: def delegate(signum, stack): self.__exit__(None, None, None) signal.signal(sig, delegate) return self
def handleInput(self, char): #log.msg('handling %s' % repr(char)) if char in ('\n', '\r'): self.escapeMode = 1 self.write(char) elif self.escapeMode == 1 and char == options['escape']: self.escapeMode = 2 elif self.escapeMode == 2: self.escapeMode = 1 # so we can chain escapes together if char == '.': # disconnect log.msg('disconnecting from escape') stopConnection() return elif char == '\x1a': # ^Z, suspend def _(): _leaveRawMode() sys.stdout.flush() sys.stdin.flush() os.kill(os.getpid(), signal.SIGTSTP) _enterRawMode() reactor.callLater(0, _) return elif char == 'R': # rekey connection log.msg('rekeying connection') self.conn.transport.sendKexInit() return elif char == '#': # display connections self.stdio.write('\r\nThe following connections are open:\r\n') channels = self.conn.channels.keys() channels.sort() for channelId in channels: self.stdio.write(' #%i %s\r\n' % (channelId, str(self.conn.channels[channelId]))) return self.write('~' + char) else: self.escapeMode = 0 self.write(char)
def _setup_signal_handlers(self): """Setup the signal handlers for daemon mode""" signals = self.signals # Ignore Terminal I/O Signals if hasattr(signal, 'SIGTTOU'): signals.ignore(signal.SIGTTOU) if hasattr(signal, 'SIGTTIN'): signals.ignore(signal.SIGTTIN) if hasattr(signal, 'SIGTSTP'): signals.ignore(signal.SIGTSTP) # Ignore USR signals if hasattr(signal, 'SIGUSR1'): signals.ignore(signal.SIGUSR1) if hasattr(signal, 'SIGUSR2'): signals.ignore(signal.SIGUSR2)
def shutdown_on_signals(self, signals=None): if signals is None: signals = [signal.SIGHUP, signal.SIGINT, signal.SIGQUIT, signal.SIGTERM, signal.SIGTSTP] for sig in signals: signal.signal(sig, self._handle_signal_shutdown)
def _subproc_pre(): os.setpgrp() signal.signal(signal.SIGTSTP, lambda n, f: signal.pause())
def ignore_sigtstp(): signal.signal(signal.SIGTSTP, signal.SIG_IGN)
def getch(): fd = sys.stdin.fileno() old_settings = termios.tcgetattr(fd) try: tty.setraw(sys.stdin.fileno()) ch = sys.stdin.read(1) # restore behavior for special things if ch == '\x03': # ^C raise KeyboardInterrupt elif ch == '\x1a': # ^Z os.kill(os.getpid(), signal.SIGTSTP) finally: termios.tcsetattr(fd, termios.TCSADRAIN, old_settings) return ch
def ignore_signals(): if platform.system() != 'Windows': # ??ctrl-z/c?? signal.signal(signal.SIGTSTP, signal.SIG_IGN) signal.signal(signal.SIGINT, signal.SIG_IGN) # signal.SIGTSTP ?????????????? Ctrl-Z ????? Unix ????? # signal.SIGINT ?????????????? Ctrl-C ??? # signal.SIG_IGN ?????????
