我们从Python开源项目中，提取了以下7个代码示例，用于说明如何使用os.P_NOWAIT。
def _start_setup(self): '''Start the setup tool if it is not running yet''' if self._setup_pid != 0: pid, dummy_state = os.waitpid(self._setup_pid, os.P_NOWAIT) if pid != self._setup_pid: # If the last setup tool started from here is still # running the pid returned by the above os.waitpid() # is 0. In that case just return, don’t start a # second setup tool. return self._setup_pid = 0 setup_cmd = os.path.join( os.getenv('IBUS_HUNSPELL_LIB_LOCATION'), 'ibus-setup-typing-booster') config_file = self._name.replace('typing-booster:', '') + '.conf' self._setup_pid = os.spawnl( os.P_NOWAIT, setup_cmd, 'ibus-setup-typing-booster', '--config-file %s' %config_file)
def reload(): """ Reload process """ try: # Reload and replace current process os.execv(sys.executable, [sys.executable] + sys.argv) except OSError: # Ugh, that failed # Try spawning a new process and exitj os.spawnv( os.P_NOWAIT, sys.executable, [sys.executable] + sys.argv, ) os._exit(os.EX_OK)
def __run_commandQQQ( app, cmd, args ): app.log.info( '%s %s' % (cmd, ' '.join( args ) ) ) env = os.environ.copy() cmd = asUtf8( cmd ) args = [asUtf8( arg ) for arg in args] os.spawnvpe( os.P_NOWAIT, cmd, [cmd]+args, env )
def __run_command( app, cmd, args ): app.log.info( '%s %s' % (cmd, ' '.join( [str(arg) for arg in args] ) ) ) env = os.environ.copy() cmd = asUtf8( cmd ) args = [asUtf8( str(arg) ) for arg in args] os.spawnvpe( os.P_NOWAIT, cmd, [cmd]+args, env )
def launch_wxglade(self, options, wait=False): path = self.GetWxGladePath() glade = os.path.join(path, 'wxglade.py') if wx.Platform == '__WXMSW__': glade = "\"%s\"" % glade mode = {False: os.P_NOWAIT, True: os.P_WAIT}[wait] os.spawnv(mode, sys.executable, ["\"%s\"" % sys.executable] + [glade] + options)
def downloadfileRTMP(url,nombrefichero,silent): ''' No usa librtmp ya que no siempre está disponible. Lanza un subproceso con rtmpdump. En Windows es necesario instalarlo. No usa threads así que no muestra ninguna barra de progreso ni tampoco se marca el final real de la descarga en el log info. ''' Programfiles = os.getenv('Programfiles') if Programfiles: # Windows rtmpdump_cmd = Programfiles + "/rtmpdump/rtmpdump.exe" nombrefichero = '"'+nombrefichero+'"' # Windows necesita las comillas en el nombre else: rtmpdump_cmd = "/usr/bin/rtmpdump" if not os.path.isfile(rtmpdump_cmd) and not silent: from platformcode import platformtools advertencia = platformtools.dialog_ok( "Falta " + rtmpdump_cmd, "Comprueba que rtmpdump está instalado") return True valid_rtmpdump_options = ["help", "url", "rtmp", "host", "port", "socks", "protocol", "playpath", "playlist", "swfUrl", "tcUrl", "pageUrl", "app", "swfhash", "swfsize", "swfVfy", "swfAge", "auth", "conn", "flashVer", "live", "subscribe", "realtime", "flv", "resume", "timeout", "start", "stop", "token", "jtv", "hashes", "buffer", "skip", "quiet", "verbose", "debug"] # for rtmpdump 2.4 url_args = url.split(' ') rtmp_url = url_args[0] rtmp_args = url_args[1:] rtmpdump_args = ["--rtmp", rtmp_url] for arg in rtmp_args: n = arg.find('=') if n < 0: if arg not in valid_rtmpdump_options: continue rtmpdump_args += ["--"+arg] else: if arg[:n] not in valid_rtmpdump_options: continue rtmpdump_args += ["--"+arg[:n], arg[n+1:]] try: rtmpdump_args = [rtmpdump_cmd] + rtmpdump_args + ["-o", nombrefichero] from os import spawnv, P_NOWAIT logger.info("Iniciando descarga del fichero: %s" % " ".join(rtmpdump_args)) rtmpdump_exit = spawnv(P_NOWAIT, rtmpdump_cmd, rtmpdump_args) if not silent: from platformcode import platformtools advertencia = platformtools.dialog_ok( "La opción de descarga RTMP es experimental", "y el vídeo se descargará en segundo plano.", "No se mostrará ninguna barra de progreso.") except: return True return
def downloadfileRTMP(url, nombrefichero, silent): ''' No usa librtmp ya que no siempre está disponible. Lanza un subproceso con rtmpdump. En Windows es necesario instalarlo. No usa threads así que no muestra ninguna barra de progreso ni tampoco se marca el final real de la descarga en el log info. ''' Programfiles = os.getenv('Programfiles') if Programfiles: # Windows rtmpdump_cmd = Programfiles + "/rtmpdump/rtmpdump.exe" nombrefichero = '"' + nombrefichero + '"' # Windows necesita las comillas en el nombre else: rtmpdump_cmd = "/usr/bin/rtmpdump" if not os.path.isfile(rtmpdump_cmd) and not silent: from platformcode import platformtools advertencia = platformtools.dialog_ok("Falta " + rtmpdump_cmd, "Comprueba que rtmpdump está instalado") return True valid_rtmpdump_options = ["help", "url", "rtmp", "host", "port", "socks", "protocol", "playpath", "playlist", "swfUrl", "tcUrl", "pageUrl", "app", "swfhash", "swfsize", "swfVfy", "swfAge", "auth", "conn", "flashVer", "live", "subscribe", "realtime", "flv", "resume", "timeout", "start", "stop", "token", "jtv", "hashes", "buffer", "skip", "quiet", "verbose", "debug"] # for rtmpdump 2.4 url_args = url.split(' ') rtmp_url = url_args[0] rtmp_args = url_args[1:] rtmpdump_args = ["--rtmp", rtmp_url] for arg in rtmp_args: n = arg.find('=') if n < 0: if arg not in valid_rtmpdump_options: continue rtmpdump_args += ["--" + arg] else: if arg[:n] not in valid_rtmpdump_options: continue rtmpdump_args += ["--" + arg[:n], arg[n + 1:]] try: rtmpdump_args = [rtmpdump_cmd] + rtmpdump_args + ["-o", nombrefichero] from os import spawnv, P_NOWAIT logger.info("Iniciando descarga del fichero: %s" % " ".join(rtmpdump_args)) rtmpdump_exit = spawnv(P_NOWAIT, rtmpdump_cmd, rtmpdump_args) if not silent: from platformcode import platformtools advertencia = platformtools.dialog_ok("La opción de descarga RTMP es experimental", "y el vídeo se descargará en segundo plano.", "No se mostrará ninguna barra de progreso.") except: return True return
