コード例 #1
0
ファイル: _twistd_unix.py プロジェクト: anrysev/twisted
def daemonize(reactor, os):
    """
    Daemonizes the application on Unix. This is done by the usual double
    forking approach.

    @see: U{http://code.activestate.com/recipes/278731/}
    @see: W. Richard Stevens, "Advanced Programming in the Unix Environment",
          1992, Addison-Wesley, ISBN 0-201-56317-7

    @param reactor: The reactor in use.  If it provides L{IReactorDaemonize},
        its daemonization-related callbacks will be invoked.

    @param os: An object like the os module to use to perform the daemonization.
    """

    ## If the reactor requires hooks to be called for daemonization, call them.
    ## Currently the only reactor which provides/needs that is KQueueReactor.
    if IReactorDaemonize.providedBy(reactor):
        reactor.beforeDaemonize()

    if os.fork():   # launch child and...
        os._exit(0) # kill off parent
    os.setsid()
    if os.fork():   # launch child and...
        os._exit(0) # kill off parent again.
    null = os.open('/dev/null', os.O_RDWR)
    for i in range(3):
        try:
            os.dup2(null, i)
        except OSError, e:
            if e.errno != errno.EBADF:
                raise
コード例 #2
0
def daemonize(reactor, os):
    """
    Daemonizes the application on Unix. This is done by the usual double
    forking approach.

    @see: U{http://code.activestate.com/recipes/278731/}
    @see: W. Richard Stevens, "Advanced Programming in the Unix Environment",
          1992, Addison-Wesley, ISBN 0-201-56317-7

    @param reactor: The reactor in use.  If it provides L{IReactorDaemonize},
        its daemonization-related callbacks will be invoked.

    @param os: An object like the os module to use to perform the daemonization.
    """

    ## If the reactor requires hooks to be called for daemonization, call them.
    ## Currently the only reactor which provides/needs that is KQueueReactor.
    if IReactorDaemonize.providedBy(reactor):
        reactor.beforeDaemonize()

    if os.fork():  # launch child and...
        os._exit(0)  # kill off parent
    os.setsid()
    if os.fork():  # launch child and...
        os._exit(0)  # kill off parent again.
    null = os.open('/dev/null', os.O_RDWR)
    for i in range(3):
        try:
            os.dup2(null, i)
        except OSError, e:
            if e.errno != errno.EBADF:
                raise
コード例 #3
0
    def daemonize(self, reactor):
        """
        Daemonizes the application on Unix. This is done by the usual double
        forking approach.

        @see: U{http://code.activestate.com/recipes/278731/}
        @see: W. Richard Stevens,
            "Advanced Programming in the Unix Environment",
            1992, Addison-Wesley, ISBN 0-201-56317-7

        @param reactor: The reactor in use.  If it provides
            L{IReactorDaemonize}, its daemonization-related callbacks will be
            invoked.

        @return: A writable pipe to be used to report errors.
        @rtype: C{int}
        """
        # If the reactor requires hooks to be called for daemonization, call
        # them. Currently the only reactor which provides/needs that is
        # KQueueReactor.
        if IReactorDaemonize.providedBy(reactor):
            reactor.beforeDaemonize()
        r, w = os.pipe()
        if os.fork():  # launch child and...
            code = self._waitForStart(r)
            os.close(r)
            os._exit(code)  # kill off parent
        os.setsid()
        if os.fork():  # launch child and...
            os._exit(0)  # kill off parent again.
        null = os.open('/dev/null', os.O_RDWR)
        for i in range(3):
            try:
                os.dup2(null, i)
            except OSError as e:
                if e.errno != errno.EBADF:
                    raise
        os.close(null)

        if IReactorDaemonize.providedBy(reactor):
            reactor.afterDaemonize()

        return w
コード例 #4
0
    def daemonize(self, reactor):
        """
        Daemonizes the application on Unix. This is done by the usual double
        forking approach.

        @see: U{http://code.activestate.com/recipes/278731/}
        @see: W. Richard Stevens,
            "Advanced Programming in the Unix Environment",
            1992, Addison-Wesley, ISBN 0-201-56317-7

        @param reactor: The reactor in use.  If it provides
            L{IReactorDaemonize}, its daemonization-related callbacks will be
            invoked.

        @return: A writable pipe to be used to report errors.
        @rtype: C{int}
        """
        # If the reactor requires hooks to be called for daemonization, call
        # them. Currently the only reactor which provides/needs that is
        # KQueueReactor.
        if IReactorDaemonize.providedBy(reactor):
            reactor.beforeDaemonize()
        r, w = os.pipe()
        if os.fork():  # launch child and...
            code = self._waitForStart(r)
            os.close(r)
            os._exit(code)   # kill off parent
        os.setsid()
        if os.fork():  # launch child and...
            os._exit(0)  # kill off parent again.
        null = os.open('/dev/null', os.O_RDWR)
        for i in range(3):
            try:
                os.dup2(null, i)
            except OSError as e:
                if e.errno != errno.EBADF:
                    raise
        os.close(null)

        if IReactorDaemonize.providedBy(reactor):
            reactor.afterDaemonize()

        return w
コード例 #5
0
ファイル: _twistd_unix.py プロジェクト: anrysev/twisted
    if os.fork():   # launch child and...
        os._exit(0) # kill off parent
    os.setsid()
    if os.fork():   # launch child and...
        os._exit(0) # kill off parent again.
    null = os.open('/dev/null', os.O_RDWR)
    for i in range(3):
        try:
            os.dup2(null, i)
        except OSError, e:
            if e.errno != errno.EBADF:
                raise
    os.close(null)

    if IReactorDaemonize.providedBy(reactor):
        reactor.afterDaemonize()



def launchWithName(name):
    if name and name != sys.argv[0]:
        exe = os.path.realpath(sys.executable)
        log.msg('Changing process name to ' + name)
        os.execv(exe, [name, sys.argv[0], '--originalname'] + sys.argv[1:])



class UnixApplicationRunner(app.ApplicationRunner):
    """
    An ApplicationRunner which does Unix-specific things, like fork,
コード例 #6
0
    if os.fork():  # launch child and...
        os._exit(0)  # kill off parent
    os.setsid()
    if os.fork():  # launch child and...
        os._exit(0)  # kill off parent again.
    null = os.open('/dev/null', os.O_RDWR)
    for i in range(3):
        try:
            os.dup2(null, i)
        except OSError, e:
            if e.errno != errno.EBADF:
                raise
    os.close(null)

    if IReactorDaemonize.providedBy(reactor):
        reactor.afterDaemonize()


def launchWithName(name):
    if name and name != sys.argv[0]:
        exe = os.path.realpath(sys.executable)
        log.msg('Changing process name to ' + name)
        os.execv(exe, [name, sys.argv[0], '--originalname'] + sys.argv[1:])


class UnixApplicationRunner(app.ApplicationRunner):
    """
    An ApplicationRunner which does Unix-specific things, like fork,
    shed privileges, and maintain a PID file.
    """