Re: Exception message from java: MathLink connection was lost.
- To: mathgroup at smc.vnet.net
- Subject: [mg107482] Re: Exception message from java: MathLink connection was lost.
- From: Andrey <andrey.siver at gmail.com>
- Date: Sun, 14 Feb 2010 05:58:42 -0500 (EST)
- References: <hkp1ol$7ge$1@smc.vnet.net> <hkr40b$ahk$1@smc.vnet.net>
The problem appears after
ml.waitForAnswer();
(where ml is KernelLink).
The stack trace shows that exception arise in class
com.wolfram.jlink.NativeLink in the following method:
...
public synchronized int nextPacket() throws MathLinkException {
if (link == 0) {
throw new MathLinkException(MLE_LINK_IS_NULL, LINK_NULL_MESSAGE);
}
int pkt = MLNextPacket(link); // <-- Probably Here
int errCode = MLError(link);
if(errCode == 0) {
return pkt;
} else {
throw new MathLinkException(errCode, MLErrorMessage(link));
}
}
...
So, it looks like the problem is in native library.
Of course, probably, it's possible to avoid the problem by rewriting
the mathematica code...
-Andrey
On Feb 11, 1:16 pm, David Bailey <d... at removedbailey.co.uk> wrote:
> A good way to explore this problem might be to call ShowJavaConsole[] to
> produce a console, and then add calls to
>
> System.out.println(whatever)
>
> in your Java code.
I do not understand now how to do it and how it can help.
But thanks for the suggestion.
-Andrey