def setup(self, **kwargs):
        utils.validate_configuration()
        utils.drop_privileges(self.daemon.conf.get('user', 'swift'))
        utils.capture_stdio(self.logger, **kwargs)

        def kill_children(*args):
            self.running = False
            self.logger.info('SIGTERM received')
            signal.signal(signal.SIGTERM, signal.SIG_IGN)
            os.killpg(0, signal.SIGTERM)
            os._exit(0)

        signal.signal(signal.SIGTERM, kill_children)
        self.running = True

    def run(self, once=False, **kwargs):
        """Run the daemon"""
        utils.validate_configuration()
        utils.drop_privileges(self.conf.get('user', 'swift'))
        utils.capture_stdio(self.logger, **kwargs)

        def kill_children(*args):
            signal.signal(signal.SIGTERM, signal.SIG_IGN)
            os.killpg(0, signal.SIGTERM)
            sys.exit()

        signal.signal(signal.SIGTERM, kill_children)
        if once:
            self.run_once(**kwargs)
        else:
            self.run_forever(**kwargs)

    def test_capture_stdio(self):
        # stubs
        logger = utils.get_logger(None, 'dummy')

        # mock utils system modules
        _orig_sys = utils.sys
        _orig_os = utils.os
        try:
            utils.sys = MockSys()
            utils.os = MockOs()

            # basic test
            utils.capture_stdio(logger)
            self.assert_(utils.sys.excepthook is not None)
            self.assertEquals(utils.os.closed_fds, utils.sys.stdio_fds)
            self.assert_(isinstance(utils.sys.stdout, utils.LoggerFileObject))
            self.assert_(isinstance(utils.sys.stderr, utils.LoggerFileObject))

            # reset; test same args, but exc when trying to close stdio
            utils.os = MockOs(raise_funcs=('dup2',))
            utils.sys = MockSys()

            # test unable to close stdio
            utils.capture_stdio(logger)
            self.assert_(utils.sys.excepthook is not None)
            self.assertEquals(utils.os.closed_fds, [])
            self.assert_(isinstance(utils.sys.stdout, utils.LoggerFileObject))
            self.assert_(isinstance(utils.sys.stderr, utils.LoggerFileObject))

            # reset; test some other args
            utils.os = MockOs()
            utils.sys = MockSys()
            logger = utils.get_logger(None, log_to_console=True)

            # test console log
            utils.capture_stdio(logger, capture_stdout=False,
                                capture_stderr=False)
            self.assert_(utils.sys.excepthook is not None)
            # when logging to console, stderr remains open
            self.assertEquals(utils.os.closed_fds, utils.sys.stdio_fds[:2])
            reset_loggers()

            # stdio not captured
            self.assertFalse(isinstance(utils.sys.stdout,
                                        utils.LoggerFileObject))
            self.assertFalse(isinstance(utils.sys.stderr,
                                        utils.LoggerFileObject))
            reset_loggers()
        finally:
            utils.sys = _orig_sys
            utils.os = _orig_os

    def test_capture_stdio(self):
        # stubs
        logger = utils.get_logger(None, 'dummy')

        # mock utils system modules
        utils.sys = MockSys()
        utils.os = MockOs()

        # basic test
        utils.capture_stdio(logger)
        self.assert_(utils.sys.excepthook is not None)
        self.assertEquals(utils.os.closed_fds, [0, 1, 2])
        self.assert_(utils.sys.stdout is not None)
        self.assert_(utils.sys.stderr is not None)

        # reset; test same args, but exc when trying to close stdio
        utils.os = MockOs(raise_funcs=('dup2',))
        utils.sys = MockSys()

        # test unable to close stdio
        utils.capture_stdio(logger)
        self.assert_(utils.sys.excepthook is not None)
        self.assertEquals(utils.os.closed_fds, [])
        self.assert_(utils.sys.stdout is not None)
        self.assert_(utils.sys.stderr is not None)

        # reset; test some other args
        logger = utils.get_logger(None, log_to_console=True)
        utils.os = MockOs()
        utils.sys = MockSys()

        # test console log
        utils.capture_stdio(logger, capture_stdout=False,
                            capture_stderr=False)
        self.assert_(utils.sys.excepthook is not None)
        # when logging to console, stderr remains open
        self.assertEquals(utils.os.closed_fds, [0, 1])
        logger.logger.removeHandler(utils.get_logger.console)
        # stdio not captured
        self.assertFalse(hasattr(utils.sys, 'stdout'))
        self.assertFalse(hasattr(utils.sys, 'stderr'))

def run_wsgi(conf_path, app_section, *args, **kwargs):
    """
    Runs the server using the specified number of workers.

    :param conf_path: Path to paste.deploy style configuration file/directory
    :param app_section: App name from conf file to load config from
    :returns: 0 if successful, nonzero otherwise
    """
    # Load configuration, Set logger and Load request processor
    try:
        (conf, logger, log_name) = _initrp(conf_path, app_section, *args, **kwargs)
    except ConfigFileError as e:
        print e
        return 1

    # bind to address and port
    sock = get_socket(conf, default_port=kwargs.get("default_port", 8080))
    # remaining tasks should not require elevated privileges
    drop_privileges(conf.get("user", "swift"))

    # Ensure the configuration and application can be loaded before proceeding.
    global_conf = {"log_name": log_name}
    if "global_conf_callback" in kwargs:
        kwargs["global_conf_callback"](conf, global_conf)
    loadapp(conf_path, global_conf=global_conf)

    # set utils.FALLOCATE_RESERVE if desired
    reserve = int(conf.get("fallocate_reserve", 0))
    if reserve > 0:
        utils.FALLOCATE_RESERVE = reserve
    # redirect errors to logger and close stdio
    capture_stdio(logger)

    worker_count = config_auto_int_value(conf.get("workers"), CPU_COUNT)

    # Useful for profiling [no forks].
    if worker_count == 0:
        run_server(conf, logger, sock, global_conf=global_conf)
        return 0

    def kill_children(*args):
        """Kills the entire process group."""
        logger.error("SIGTERM received")
        signal.signal(signal.SIGTERM, signal.SIG_IGN)
        running[0] = False
        os.killpg(0, signal.SIGTERM)

    def hup(*args):
        """Shuts down the server, but allows running requests to complete"""
        logger.error("SIGHUP received")
        signal.signal(signal.SIGHUP, signal.SIG_IGN)
        running[0] = False

    running = [True]
    signal.signal(signal.SIGTERM, kill_children)
    signal.signal(signal.SIGHUP, hup)
    children = []
    while running[0]:
        while len(children) < worker_count:
            pid = os.fork()
            if pid == 0:
                signal.signal(signal.SIGHUP, signal.SIG_DFL)
                signal.signal(signal.SIGTERM, signal.SIG_DFL)
                run_server(conf, logger, sock)
                logger.notice("Child %d exiting normally" % os.getpid())
                return 0
            else:
                logger.notice("Started child %s" % pid)
                children.append(pid)
        try:
            pid, status = os.wait()
            if os.WIFEXITED(status) or os.WIFSIGNALED(status):
                logger.error("Removing dead child %s" % pid)
                children.remove(pid)
        except OSError as err:
            if err.errno not in (errno.EINTR, errno.ECHILD):
                raise
        except KeyboardInterrupt:
            logger.notice("User quit")
            break
    greenio.shutdown_safe(sock)
    sock.close()
    logger.notice("Exited")
    return 0

    log_name = conf.get("log_name", app_section)
    if "logger" in kwargs:
        logger = kwargs.pop("logger")
    else:
        logger = get_logger(conf, log_name, log_to_console=kwargs.pop("verbose", False), log_route="wsgi")

    # bind to address and port
    sock = get_socket(conf, default_port=kwargs.get("default_port", 8080))
    # remaining tasks should not require elevated privileges
    drop_privileges(conf.get("user", "swift"))

    # Ensure the application can be loaded before proceeding.
    loadapp("config:%s" % conf_file, global_conf={"log_name": log_name})

    # redirect errors to logger and close stdio
    capture_stdio(logger)

    def run_server():
        wsgi.HttpProtocol.default_request_version = "HTTP/1.0"
        # Turn off logging requests by the underlying WSGI software.
        wsgi.HttpProtocol.log_request = lambda *a: None
        # Redirect logging other messages by the underlying WSGI software.
        wsgi.HttpProtocol.log_message = lambda s, f, *a: logger.error("ERROR WSGI: " + f % a)
        wsgi.WRITE_TIMEOUT = int(conf.get("client_timeout") or 60)
        eventlet.hubs.use_hub("poll")
        eventlet.patcher.monkey_patch(all=False, socket=True)
        monkey_patch_mimetools()
        app = loadapp("config:%s" % conf_file, global_conf={"log_name": log_name})
        pool = GreenPool(size=1024)
        try:
            wsgi.server(sock, app, NullLogger(), custom_pool=pool)

def run_wsgi(conf_path, app_section, *args, **kwargs):
    """
    Runs the server according to some strategy.  The default strategy runs a
    specified number of workers in pre-fork model.  The object-server (only)
    may use a servers-per-port strategy if its config has a servers_per_port
    setting with a value greater than zero.

    :param conf_path: Path to paste.deploy style configuration file/directory
    :param app_section: App name from conf file to load config from
    :returns: 0 if successful, nonzero otherwise
    """
    # Load configuration, Set logger and Load request processor
    try:
        (conf, logger, log_name) = _initrp(conf_path, app_section, *args, **kwargs)
    except ConfigFileError as e:
        print(e)
        return 1

    # optional nice/ionice priority scheduling
    utils.modify_priority(conf, logger)

    servers_per_port = int(conf.get("servers_per_port", "0") or 0)

    # NOTE: for now servers_per_port is object-server-only; future work could
    # be done to test and allow it to be used for account and container
    # servers, but that has not been done yet.
    if servers_per_port and app_section == "object-server":
        strategy = ServersPerPortStrategy(conf, logger, servers_per_port=servers_per_port)
    else:
        strategy = WorkersStrategy(conf, logger)

    error_msg = strategy.bind_ports()
    if error_msg:
        logger.error(error_msg)
        print(error_msg)
        return 1

    # Ensure the configuration and application can be loaded before proceeding.
    global_conf = {"log_name": log_name}
    if "global_conf_callback" in kwargs:
        kwargs["global_conf_callback"](conf, global_conf)
    loadapp(conf_path, global_conf=global_conf)

    # set utils.FALLOCATE_RESERVE if desired
    utils.FALLOCATE_RESERVE, utils.FALLOCATE_IS_PERCENT = utils.config_fallocate_value(
        conf.get("fallocate_reserve", "1%")
    )

    # redirect errors to logger and close stdio
    capture_stdio(logger)

    no_fork_sock = strategy.no_fork_sock()
    if no_fork_sock:
        run_server(conf, logger, no_fork_sock, global_conf=global_conf)
        return 0

    def kill_children(*args):
        """Kills the entire process group."""
        logger.error("SIGTERM received")
        signal.signal(signal.SIGTERM, signal.SIG_IGN)
        running[0] = False
        os.killpg(0, signal.SIGTERM)

    def hup(*args):
        """Shuts down the server, but allows running requests to complete"""
        logger.error("SIGHUP received")
        signal.signal(signal.SIGHUP, signal.SIG_IGN)
        running[0] = False

    running = [True]
    signal.signal(signal.SIGTERM, kill_children)
    signal.signal(signal.SIGHUP, hup)

    while running[0]:
        for sock, sock_info in strategy.new_worker_socks():
            pid = os.fork()
            if pid == 0:
                signal.signal(signal.SIGHUP, signal.SIG_DFL)
                signal.signal(signal.SIGTERM, signal.SIG_DFL)
                strategy.post_fork_hook()
                run_server(conf, logger, sock)
                strategy.log_sock_exit(sock, sock_info)
                return 0
            else:
                strategy.register_worker_start(sock, sock_info, pid)

        # The strategy may need to pay attention to something in addition to
        # child process exits (like new ports showing up in a ring).
        #
        # NOTE: a timeout value of None will just instantiate the Timeout
        # object and not actually schedule it, which is equivalent to no
        # timeout for the green_os.wait().
        loop_timeout = strategy.loop_timeout()

        with Timeout(loop_timeout, exception=False):
            try:
                try:
                    pid, status = green_os.wait()
                    if os.WIFEXITED(status) or os.WIFSIGNALED(status):
                        strategy.register_worker_exit(pid)
#.........这里部分代码省略.........

def run_wsgi(conf_path, app_section, *args, **kwargs):
    """
    Runs the server according to some strategy.  The default strategy runs a
    specified number of workers in pre-fork model.  The object-server (only)
    may use a servers-per-port strategy if its config has a servers_per_port
    setting with a value greater than zero.

    :param conf_path: Path to paste.deploy style configuration file/directory
    :param app_section: App name from conf file to load config from
    :returns: 0 if successful, nonzero otherwise
    """
    # Load configuration, Set logger and Load request processor
    try:
        (conf, logger, log_name) = \
            _initrp(conf_path, app_section, *args, **kwargs)
    except ConfigFileError as e:
        print(e)
        return 1

    # optional nice/ionice priority scheduling
    utils.modify_priority(conf, logger)

    servers_per_port = int(conf.get('servers_per_port', '0') or 0)

    # NOTE: for now servers_per_port is object-server-only; future work could
    # be done to test and allow it to be used for account and container
    # servers, but that has not been done yet.
    if servers_per_port and app_section == 'object-server':
        strategy = ServersPerPortStrategy(
            conf, logger, servers_per_port=servers_per_port)
    else:
        strategy = WorkersStrategy(conf, logger)

    # patch event before loadapp
    utils.eventlet_monkey_patch()

    # Ensure the configuration and application can be loaded before proceeding.
    global_conf = {'log_name': log_name}
    if 'global_conf_callback' in kwargs:
        kwargs['global_conf_callback'](conf, global_conf)
    loadapp(conf_path, global_conf=global_conf)

    # set utils.FALLOCATE_RESERVE if desired
    utils.FALLOCATE_RESERVE, utils.FALLOCATE_IS_PERCENT = \
        utils.config_fallocate_value(conf.get('fallocate_reserve', '1%'))

    # Start listening on bind_addr/port
    error_msg = strategy.do_bind_ports()
    if error_msg:
        logger.error(error_msg)
        print(error_msg)
        return 1

    # Redirect errors to logger and close stdio. Do this *after* binding ports;
    # we use this to signal that the service is ready to accept connections.
    capture_stdio(logger)

    no_fork_sock = strategy.no_fork_sock()
    if no_fork_sock:
        run_server(conf, logger, no_fork_sock, global_conf=global_conf)
        return 0

    def stop_with_signal(signum, *args):
        """Set running flag to False and capture the signum"""
        running_context[0] = False
        running_context[1] = signum

    # context to hold boolean running state and stop signum
    running_context = [True, None]
    signal.signal(signal.SIGTERM, stop_with_signal)
    signal.signal(signal.SIGHUP, stop_with_signal)

    while running_context[0]:
        for sock, sock_info in strategy.new_worker_socks():
            pid = os.fork()
            if pid == 0:
                signal.signal(signal.SIGHUP, signal.SIG_DFL)
                signal.signal(signal.SIGTERM, signal.SIG_DFL)
                strategy.post_fork_hook()
                run_server(conf, logger, sock)
                strategy.log_sock_exit(sock, sock_info)
                return 0
            else:
                strategy.register_worker_start(sock, sock_info, pid)

        # The strategy may need to pay attention to something in addition to
        # child process exits (like new ports showing up in a ring).
        #
        # NOTE: a timeout value of None will just instantiate the Timeout
        # object and not actually schedule it, which is equivalent to no
        # timeout for the green_os.wait().
        loop_timeout = strategy.loop_timeout()

        with Timeout(loop_timeout, exception=False):
            try:
                try:
                    pid, status = green_os.wait()
                    if os.WIFEXITED(status) or os.WIFSIGNALED(status):
                        strategy.register_worker_exit(pid)
                except OSError as err:
#.........这里部分代码省略.........

def run_wsgi(conf_path, app_section, *args, **kwargs):
    """
    Runs the server according to some strategy.  The default strategy runs a
    specified number of workers in pre-fork model.  The object-server (only)
    may use a servers-per-port strategy if its config has a servers_per_port
    setting with a value greater than zero.

    :param conf_path: Path to paste.deploy style configuration file/directory
    :param app_section: App name from conf file to load config from
    :returns: 0 if successful, nonzero otherwise
    """
    # Load configuration, Set logger and Load request processor
    try:
        (conf, logger, log_name) = \
            _initrp(conf_path, app_section, *args, **kwargs)
    except ConfigFileError as e:
        print(e)
        return 1

    servers_per_port = int(conf.get('servers_per_port', '0') or 0)

    # NOTE: for now servers_per_port is object-server-only; future work could
    # be done to test and allow it to be used for account and container
    # servers, but that has not been done yet.
    if servers_per_port and app_section == 'object-server':
        strategy = ServersPerPortStrategy(
            conf, logger, servers_per_port=servers_per_port)
    else:
        strategy = WorkersStrategy(conf, logger)

    error_msg = strategy.bind_ports()
    if error_msg:
        logger.error(error_msg)
        print(error_msg)
        return 1

    # Ensure the configuration and application can be loaded before proceeding.
    global_conf = {'log_name': log_name}
    if 'global_conf_callback' in kwargs:
        kwargs['global_conf_callback'](conf, global_conf)
    loadapp(conf_path, global_conf=global_conf)

    # set utils.FALLOCATE_RESERVE if desired
    reserve = int(conf.get('fallocate_reserve', 0))
    if reserve > 0:
        utils.FALLOCATE_RESERVE = reserve
    # redirect errors to logger and close stdio
    capture_stdio(logger)

    no_fork_sock = strategy.no_fork_sock()
    if no_fork_sock:
        run_server(conf, logger, no_fork_sock, global_conf=global_conf)
        return 0

    def kill_children(*args):
        """Kills the entire process group."""
        logger.error('SIGTERM received')
        signal.signal(signal.SIGTERM, signal.SIG_IGN)
        running[0] = False
        os.killpg(0, signal.SIGTERM)

    def hup(*args):
        """Shuts down the server, but allows running requests to complete"""
        logger.error('SIGHUP received')
        signal.signal(signal.SIGHUP, signal.SIG_IGN)
        running[0] = False

    running = [True]
    signal.signal(signal.SIGTERM, kill_children)
    signal.signal(signal.SIGHUP, hup)

    while running[0]:
        for sock, sock_info in strategy.new_worker_socks():
            pid = os.fork()
            if pid == 0:
                signal.signal(signal.SIGHUP, signal.SIG_DFL)
                signal.signal(signal.SIGTERM, signal.SIG_DFL)
                strategy.post_fork_hook()
                run_server(conf, logger, sock)
                strategy.log_sock_exit(sock, sock_info)
                return 0
            else:
                strategy.register_worker_start(sock, sock_info, pid)

        # The strategy may need to pay attention to something in addition to
        # child process exits (like new ports showing up in a ring).
        #
        # NOTE: a timeout value of None will just instantiate the Timeout
        # object and not actually schedule it, which is equivalent to no
        # timeout for the green_os.wait().
        loop_timeout = strategy.loop_timeout()

        with Timeout(loop_timeout, exception=False):
            try:
                pid, status = green_os.wait()
                if os.WIFEXITED(status) or os.WIFSIGNALED(status):
                    strategy.register_worker_exit(pid)
            except OSError as err:
                if err.errno not in (errno.EINTR, errno.ECHILD):
                    raise
#.........这里部分代码省略.........

def run_wsgi(conf_path, app_section, *args, **kwargs):
    """
    Runs the server using the specified number of workers.

    :param conf_path: Path to paste.deploy style configuration file/directory
    :param app_section: App name from conf file to load config from
    :returns: 0 if successful, nonzero otherwise
    """
    # Load configuration, Set logger and Load request processor
    try:
        (conf, logger, log_name) = \
            _initrp(conf_path, app_section, *args, **kwargs)
    except ConfigFileError as e:
        print e
        return 1

    # bind to address and port
    sock = get_socket(conf, default_port=kwargs.get('default_port', 8080))
    # remaining tasks should not require elevated privileges
    drop_privileges(conf.get('user', 'ubuntu'))

    # Ensure the configuration and application can be loaded before proceeding.
    global_conf = {'log_name': log_name}
    if 'global_conf_callback' in kwargs:
        kwargs['global_conf_callback'](conf, global_conf)
    loadapp(conf_path, global_conf=global_conf)

    # set utils.FALLOCATE_RESERVE if desired
    reserve = int(conf.get('fallocate_reserve', 0))
    if reserve > 0:
        utils.FALLOCATE_RESERVE = reserve
    # redirect errors to logger and close stdio
    capture_stdio(logger)

    worker_count = config_auto_int_value(conf.get('workers'), CPU_COUNT)

    # Useful for profiling [no forks].
    if worker_count == 0:
        run_server(conf, logger, sock, global_conf=global_conf)
        return 0

    def kill_children(*args):
        """Kills the entire process group."""
        logger.error('SIGTERM received')
        signal.signal(signal.SIGTERM, signal.SIG_IGN)
        running[0] = False
        os.killpg(0, signal.SIGTERM)

    def hup(*args):
        """Shuts down the server, but allows running requests to complete"""
        logger.error('SIGHUP received')
        signal.signal(signal.SIGHUP, signal.SIG_IGN)
        running[0] = False

    running = [True]
    signal.signal(signal.SIGTERM, kill_children)
    signal.signal(signal.SIGHUP, hup)
    children = []
    while running[0]:
        while len(children) < worker_count:
            pid = os.fork()
            if pid == 0:
                signal.signal(signal.SIGHUP, signal.SIG_DFL)
                signal.signal(signal.SIGTERM, signal.SIG_DFL)
                #with open("/home/ubuntu/transition_statistics.txt", "a") as tran_file:
                #    tran_file.write("ESTOU NO FORK!!!\n")
                oracle_plus.get_oracle_plus().set_attributes(len(children))
                oracle.get_oracle().set_attributes(int(conf.get('number_of_replicas', 3)),
                                                   float(conf.get('average_window_size', 10)),
                                                   config_true_value(conf.get('use_adaptation', True)),
                                                   int(conf.get('initial_write_quorum_size', 2)),
                                                   int(conf.get('initial_read_quorum_size', 2)),
                                                   conf.get('oracle_log_file', '/home/ubuntu/oracle.txt'),
                                                   conf.get('oracle_lib_path', '/home/ubuntu/oracle_files/oracle_twitter'),
                                                   conf.get('oracle_model_path', '/home/ubuntu/oracle_files/oracle_twitter'),
                                                   conf.get('ip', ''),
                                                   int(conf.get('port', '')),
                                                   conf.get('master_ip', ''),
                                                   conf.get('slave_ips', ''),
                                                   int(conf.get('replica_reconciliation_timeout', 2)),
                                                   len(children),
                                                   worker_count)

                run_server(conf, logger, sock)
                logger.notice('Child %d exiting normally' % os.getpid())
                return 0
            else:
                logger.notice('Started child %s' % pid)
                children.append(pid)
        try:
            pid, status = os.wait()
            if os.WIFEXITED(status) or os.WIFSIGNALED(status):
                logger.error('Removing dead child %s' % pid)
                children.remove(pid)
        except OSError as err:
            if err.errno not in (errno.EINTR, errno.ECHILD):
                raise
        except KeyboardInterrupt:
            logger.notice('User quit')
            break
#.........这里部分代码省略.........

def run_wsgi(conf_path, app_section, *args, **kwargs):
    """
    Runs the server using the specified number of workers.

    :param conf_path: Path to paste.deploy style configuration file/directory
    :param app_section: App name from conf file to load config from
    :returns: 0 if successful, nonzero otherwise
    """
    # Load configuration, Set logger and Load request processor
    try:
        (conf, logger, log_name) = \
            _initrp(conf_path, app_section, *args, **kwargs)
    except ConfigFileError as e:
        print(e)
        return 1
    print('conf,logger,log_name',conf,logger,log_name)
    # bind to address and port
    try:
        sock = get_socket(conf)
    except ConfigFilePortError:
        msg = 'bind_port wasn\'t properly set in the config file. ' \
              'It must be explicitly set to a valid port number.'
        logger.error(msg)
        print(msg)
        return 1
    print('sock',sock)
    # remaining tasks should not require elevated privileges
    drop_privileges(conf.get('user', 'swift'))

    # Ensure the configuration and application can be loaded before proceeding.
    global_conf = {'log_name': log_name}
    if 'global_conf_callback' in kwargs:
        kwargs['global_conf_callback'](conf, global_conf)
    print('**** calling loadapp function start *****')
    #loadapp(conf_path, global_conf=global_conf)
    print('**** calling loadapp function end *****')

    # set utils.FALLOCATE_RESERVE if desired
    reserve = int(conf.get('fallocate_reserve', 0))
    print('reserve',reserve)
    if reserve > 0:
        utils.FALLOCATE_RESERVE = reserve
    # redirect errors to logger and close stdio
    capture_stdio(logger)
    print('capture_studio done')
    worker_count = config_auto_int_value(conf.get('workers'), CPU_COUNT)
    print('worker_count',worker_count)
    # Useful for profiling [no forks].
    if worker_count == 0:
        run_server(conf, logger, sock, global_conf=global_conf)
	print('run_server when worker_count is 0')
        return 0

    def kill_children(*args):
        """Kills the entire process group."""
        logger.error('SIGTERM received')
        signal.signal(signal.SIGTERM, signal.SIG_IGN)
        running[0] = False
        os.killpg(0, signal.SIGTERM)

    def hup(*args):
        """Shuts down the server, but allows running requests to complete"""
        logger.error('SIGHUP received')
        signal.signal(signal.SIGHUP, signal.SIG_IGN)
        running[0] = False

    running = [True]
    signal.signal(signal.SIGTERM, kill_children)
    signal.signal(signal.SIGHUP, hup)
    children = []
    while running[0]:
        while len(children) < worker_count:
            pid = os.fork()
	    print('pid',pid)
            if pid == 0:
                signal.signal(signal.SIGHUP, signal.SIG_DFL)
                signal.signal(signal.SIGTERM, signal.SIG_DFL)
 		print('')
		print('in run_wsgi now calling run_server,conf,logger,sock',conf,logger,sock)
		print('')
		run_server(conf, logger, sock)
                logger.notice('Child %d exiting normally' % os.getpid())
                return 0
            else:
                logger.notice('Started child %s' % pid)
                children.append(pid)
        try:
            pid, status = os.wait()
            if os.WIFEXITED(status) or os.WIFSIGNALED(status):
                logger.error('Removing dead child %s' % pid)
                children.remove(pid)
        except OSError as err:
            if err.errno not in (errno.EINTR, errno.ECHILD):
                raise
        except KeyboardInterrupt:
            logger.notice('User quit')
            break
    greenio.shutdown_safe(sock)
    sock.close()
    logger.notice('Exited')
#.........这里部分代码省略.........