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Liming,<br>
<br>
You may want to read the fine documentation howto sections...
<a class="moz-txt-link-freetext" href="http://www.twistedmatrix.com/documents/current/howto/">http://www.twistedmatrix.com/documents/current/howto/</a><br>
<br>
<br>
I think if you put a little time into reading, all your questions will
be answered.<br>
<br>
Anthony<br>
<br>
<br>
Tsai Li Ming wrote:
<blockquote cite="midce7rlm$1p5$1@sea.gmane.org" type="cite">Christopher,
<br>
<br>
We have the following class that is instantiated within the sever code
that is using twistd to issue system calls.
<br>
<br>
class System:
<br>
result = None
<br>
status = None
<br>
cmd = ''
<br>
<br>
<br>
def __init__(self, cmd, args=[]):
<br>
self.cmd = cmd
<br>
self.args = args
<br>
<br>
<br>
def ok(self, result):
<br>
self.result = result
<br>
self.status = 0
<br>
reactor.stop()
<br>
<br>
<br>
def err(self, err):
<br>
self.result = err.getErrorMessage()
<br>
self.status = 1
<br>
reactor.stop()
<br>
<br>
<br>
def run(self):
<br>
d = utils.getProcessOutput(self.cmd, self.args, os.environ)
<br>
d.addCallback(self.ok)
<br>
d.addErrback(self.err)
<br>
reactor.run()
<br>
<br>
<br>
def getResult(self):
<br>
if self.status == None: self.status = 0
<br>
if self.result[-1:] == '\n': self.result = self.result[:-1]
<br>
<br>
<br>
return self.status, self.result
<br>
<br>
<br>
Since the reactor is already running, how do I actually use Deferred?
<br>
<br>
Many thanks,
<br>
Liming
<br>
<br>
<br>
Christopher Armstrong wrote:
<br>
<blockquote type="cite">On Wed, 28 Jul 2004 17:07:36 +0800, Tsai Li
Ming <a class="moz-txt-link-rfc2396E" href="mailto:mailinglist@ltsai.com"><mailinglist@ltsai.com></a> wrote:
<br>
<br>
<blockquote type="cite">Ok. then how do I aviod using
reactor.start() and reactor.stop() for
<br>
getProcessOutut?
<br>
</blockquote>
<br>
<br>
Well, since you're using twistd, the reactor is already running, so
<br>
you don't need to call reactor.run(). And you shouldn't be calling
<br>
reactor.stop(), because you said you didn't want to stop the reactor.
<br>
<br>
So, just don't call them. But the fact that I need to say something so
<br>
obvious makes me think I'm not grasping the whole picture. If my
<br>
explanation so far is insufficient, can you show more code?
<br>
<br>
</blockquote>
<br>
<br>
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<br>
<br>
</blockquote>
<br>
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<p class="MsoNormal"><span style="" lang="EN-US">____________________________________________________________
<br>
<b><span style="color: navy;">Anthony Tarlano <br>
Researcher - Future Networking Laboratory</span></b><br>
</span><b><span style="font-size: 8pt;" lang="EN-US">DoCoMo
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