You mean in all cases it runs client-side? Then it's not a tomcat
related problem. Applet, to be able to run JNI, must be properly signed
and run with security authorisation needed. Moreover, the JNI libraries
must be installed on client.
Claire Dugenet a écrit :
Hello,
In the two case (with or without Tomcat), we call it with a button
because we use the same applet. Normally, the applet is independant of
Tomcat but it makes a difference when we use this applet with Tomcat
(http://localhost:8080 ...) or whithout Tomcat (file:///C:/ ...).
We have try to call the DLL with and without the servlet, and it's the
same result : it doesn't work when we use Tomcat.
david delbecq a écrit :
If your applet code is called from button actions, all calsl to your
dll will be made from the same "AWT" thread. If you call it from a
servlet in tomcat , a random thread from the HttpThread pool will be
used, that's probably your difference that make it work one side and
not the other.
Claire Dugenet a écrit :
In fact, some of the fonctions of the DLL works except the ones
which call
the threads.
To test my DLL, I have created an applet which call the two DLL and
it works
very well when I don't use Tomcat. And when I call exactly the same
applet
with Tomcat, that doesn't work : there is no error but the thread are
"blocked".
2008/1/18, david delbecq <[EMAIL PROTECTED]>:
Tomcat does not "block" multi threading. There is not such thing i
think
in the JVM anyway, so i don't see how it could prevent your native
code
from creating threads. When you say you are having same call without
tomcat, you mean in a spearate jvm, using the same jni libraries?
Maybe
you are just misuing your system library? Or not calling it at all?
There is not restriction in JNI that rpevent multiple thread to call
native code, nor is it restriction as to what thread natvie code
create.
It can even create java threads as far a i know!
Claire Dugenet a écrit :
Hello,
I realize a web application using Struts with Tomcat. In this
application, I
call a DLL (created with JNI) which call an other DLL (in language
C).
The
last one is in the directory "system32" of windows et it use several
threads.
There is no error but according to the log files, no thread are
called.
I
have call the same DLLs without Tomcat, and it works.
Does Tomcat block the multi-threading ? Is there a solution to
authorize
the
multi-threading ?
Thanks,
Claire.
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