Re: Work between multiple processes
On 10-1-2017 23:57, Patrick Zhou wrote: > Hi Irmen, > > I have successfully got it to work with both side as python but so far having > trouble with pyrolite.jar which is downloaded from > https://mvnrepository.com/artifact/net.razorvine/pyrolite/4.4 > > [...] > > which "getDst" works on Java but hangs on handshake() in the call function. > > Any thought? Thanks. -P > Yeah, don't use the oldest version of the library available, use the newest ;-) https://mvnrepository.com/artifact/net.razorvine/pyrolite/4.15 Irmen -- https://mail.python.org/mailman/listinfo/python-list
Re: Work between multiple processes
Hi Irmen,
I have successfully got it to work with both side as python but so far having
trouble with pyrolite.jar which is downloaded from
https://mvnrepository.com/artifact/net.razorvine/pyrolite/4.4
Having simple codes as:
public static void main(String[] args) {
//System.out.println("Hello world");
try {
String uri =
"PYRO:obj_12a65b09f95f4ee9bec5958f819ced45@localhost:64404";
PyroURI pyURI = new PyroURI(uri);
PyroProxy pyroP = new PyroProxy(pyURI);
Object result = pyroP.call("getDst");
String message = (String) result;
System.out.println("result message=" + message);
pyroP.close();
}
catch (IOException e1) {
System.out.println(e1.getMessage());
}
catch (PickleException e2)
{
System.out.println(e2.getMessage());
}
catch (PyroException e3)
{
System.out.println(e3.getMessage());
}
}
which "getDst" works on Java but hangs on handshake() in the call function.
Any thought? Thanks. -P
--
https://mail.python.org/mailman/listinfo/python-list
Re: Work between multiple processes
On 4-1-2017 23:14, zxpat...@gmail.com wrote: > Hi everyone, > > I ran into a case that I need to create a work process of an application (Jython so has to call using java.exe) which will collect the data based on what main process indicates. > > (1) I tried multiprocessing package, no luck. Java.exe can't be called from Process class? > > (2) I tried subprocess. subprocess.communicate function will wait for the work process to terminate so to return. > > > either (1) or (2) doesn't work out well. Please suggest. Global system queue? > > Thanks, > Patrick. > Is it a requirement that the workdf process is also Jython? If not: you could spawn a Python subprocess that hosts a Pyro4 daemon. Utilizing the Pyrolite java client library you can call methods in it from the java/jython side. (Unfortunately it is not yet possible (due to jython incompatibilities) to use the full Pyro4 library on the Jython side as well). Not sure if it meets your set of requirements but have a look at http://pythonhosted.org/Pyro4/ http://pythonhosted.org/Pyro4/pyrolite.html Irmen -- https://mail.python.org/mailman/listinfo/python-list
Re: Work between multiple processes
On Thursday, January 5, 2017 at 5:49:46 PM UTC-5, Irmen de Jong wrote: > On 4-1-2017 23:14, zxpat...@gmail.com wrote: > > Hi everyone, > > > > I ran into a case that I need to create a work process of an application > > (Jython so has to call using java.exe) which will collect the data based on > > what main process indicates. > > > > (1) I tried multiprocessing package, no luck. Java.exe can't be called from > > Process class? > > > > (2) I tried subprocess. subprocess.communicate function will wait for the > > work process to terminate so to return. > > > > > > either (1) or (2) doesn't work out well. Please suggest. Global system > > queue? > > > > Thanks, > > Patrick. > > > > > Is it a requirement that the workdf process is also Jython? > > If not: you could spawn a Python subprocess that hosts a Pyro4 daemon. > Utilizing the Pyrolite java client library you can call methods in it from the > java/jython side. (Unfortunately it is not yet possible (due to jython > incompatibilities) to use the full Pyro4 library on the Jython side as well). > Not sure if it meets your set of requirements but have a look at > http://pythonhosted.org/Pyro4/ > http://pythonhosted.org/Pyro4/pyrolite.html > > > Irmen Thanks Irmen. I think that could be the solution I am looking for. The main process will be native python so it can be used to host a pyro daemon even with lock. The jython will be a subprocess that takes the daemon's uri and use the pyrolite library to make the communication. The only trouble is that I will have to involve two more java libraries but I don't think it is a big of deal. Will try it and post the source code if possible. -- https://mail.python.org/mailman/listinfo/python-list
Work between multiple processes
Hi everyone, I ran into a case that I need to create a work process of an application (Jython so has to call using java.exe) which will collect the data based on what main process indicates. (1) I tried multiprocessing package, no luck. Java.exe can't be called from Process class? (2) I tried subprocess. subprocess.communicate function will wait for the work process to terminate so to return. either (1) or (2) doesn't work out well. Please suggest. Global system queue? Thanks, Patrick. -- https://mail.python.org/mailman/listinfo/python-list
Re: Work between multiple processes
On 4-1-2017 23:14, zxpat...@gmail.com wrote: > Hi everyone, > > I ran into a case that I need to create a work process of an application > (Jython so has to call using java.exe) which will collect the data based on > what main process indicates. > > (1) I tried multiprocessing package, no luck. Java.exe can't be called from > Process class? > > (2) I tried subprocess. subprocess.communicate function will wait for the > work process to terminate so to return. > > > either (1) or (2) doesn't work out well. Please suggest. Global system queue? > > Thanks, > Patrick. > Is it a requirement that the workdf process is also Jython? If not: you could spawn a Python subprocess that hosts a Pyro4 daemon. Utilizing the Pyrolite java client library you can call methods in it from the java/jython side. (Unfortunately it is not yet possible (due to jython incompatibilities) to use the full Pyro4 library on the Jython side as well). Not sure if it meets your set of requirements but have a look at http://pythonhosted.org/Pyro4/ http://pythonhosted.org/Pyro4/pyrolite.html Irmen -- https://mail.python.org/mailman/listinfo/python-list
Work between multiple processes
Hi everyone, I ran into a case that I need to create a work process of an application (Jython so has to call using java.exe) which will collect the data based on what main process indicates. (1) I tried multiprocessing package, no luck. Java.exe can't be called from Process class? (2) I tried subprocess. subprocess.communicate function will wait for the work process to terminate so to return. either (1) or (2) doesn't work out well. Please suggest. Global system queue? Thanks, Patrick. -- https://mail.python.org/mailman/listinfo/python-list
