Re: Using native and ld_library_path
Has no-one done this? I think the problem is when the already loaded .so-file wants to load other .so's. The java.library.path is set correctly but perhaps only for tomcat and not for the loaded .so. I've also tried to copy all of the required files to /usr/lib but without success. Andreas Andersson wrote: Hi again. I did take a look but nothing helped me there and I still need help. My guess is that tomcat has some restrictions when it comes to loading native code. I have several native libraries. One of them is loaded and executed from my code, the rest is used by the first one. What confuses me is that this works on my tomcat on windows but not linux. It also works on a standalone program on that same linux machine. But not my tomcat on linux. I've tried putting the libraries in /usr/lib. That works for my standalone but not tomcat. I've tried setting -Djava.library.path in catalina.sh, that doesn't work. When printing System.getProperties().get(java.library.path) I get the right paths but still I get the unsatisfied link error. Is there more debug information available in some way? This is really frustrating since it shouldn't be this hard :) I appreciate any help. -- Andreas Andersson IT Dept. Travelstart Nordic [EMAIL PROTECTED] http://www.travelstart.se - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
Re: Using native and ld_library_path
Caldarale, Charles R wrote: Take a look at: http://java.sun.com/docs/books/tutorial/native1.1/stepbystep/step1.html Hi again. I did take a look but nothing helped me there and I still need help. My guess is that tomcat has some restrictions when it comes to loading native code. I have several native libraries. One of them is loaded and executed from my code, the rest is used by the first one. What confuses me is that this works on my tomcat on windows but not linux. It also works on a standalone program on that same linux machine. But not my tomcat on linux. I've tried putting the libraries in /usr/lib. That works for my standalone but not tomcat. I've tried setting -Djava.library.path in catalina.sh, that doesn't work. When printing System.getProperties().get(java.library.path) I get the right paths but still I get the unsatisfied link error. Is there more debug information available in some way? This is really frustrating since it shouldn't be this hard :) I appreciate any help. -- Andreas Andersson IT Dept. Travelstart Nordic [EMAIL PROTECTED] http://www.travelstart.se - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
RE: Using native and ld_library_path
From: Andreas Andersson [mailto:[EMAIL PROTECTED] Subject: Re: Using native and ld_library_path I never use System.loadLibrary() in the javacode that does work (outside tomcat), do I have to? Take a look at: http://java.sun.com/docs/books/tutorial/native1.1/stepbystep/step1.html - Chuck THIS COMMUNICATION MAY CONTAIN CONFIDENTIAL AND/OR OTHERWISE PROPRIETARY MATERIAL and is thus for use only by the intended recipient. If you received this in error, please contact the sender and delete the e-mail and its attachments from all computers. - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
Using native and ld_library_path
Hi! My application needs to use a native share library. When running normal java program from the commandline it works if I just set LD_LIBRARY_PATH to point to the .so-file. But since tomcat runs as suid (I guess thats why) LD_LIBRARY_PATH is ignored. What can I do instead? Is there any way I can set this parameter in tomcat? I've turned of security to see if that could be the error but it wasn't. Any help is welcome :) -- Andreas Andersson IT Dept. Travelstart Nordic [EMAIL PROTECTED] http://www.travelstart.se - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
Re: Using native and ld_library_path
Have you tried setting LD_LIBRARY_PATH as a java option at Tomcat startup time? On Wed, 2005-01-26 at 10:00, Andreas Andersson wrote: Hi! My application needs to use a native share library. When running normal java program from the commandline it works if I just set LD_LIBRARY_PATH to point to the .so-file. But since tomcat runs as suid (I guess thats why) LD_LIBRARY_PATH is ignored. What can I do instead? Is there any way I can set this parameter in tomcat? I've turned of security to see if that could be the error but it wasn't. Any help is welcome :) - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
Re: Using native and ld_library_path
Ben Souther wrote: Have you tried setting LD_LIBRARY_PATH as a java option at Tomcat startup time? I have tried to export the value (export LD_LIBRARY_PATH=/path/to/so-file) in both catalina.sh and /etc/init.d/tomcat4. Is there any other way to do it? Could I do something like java -DLD_LIBRARY_PATH=/path/to/so-file ? -- Andreas Andersson IT Dept. Travelstart Nordic [EMAIL PROTECTED] http://www.travelstart.se - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
RE: Using native and ld_library_path
From: Andreas Andersson [mailto:[EMAIL PROTECTED] Subject: Re: Using native and ld_library_path Could I do something like java -DLD_LIBRARY_PATH=/path/to/so-file ? Yes, except the property name is java.library.path (LD_LIBRARY_PATH is only the environment variable name). The default for Linux systems is /usr/lib:/lib (for UNIX, it's just /usr/lib), so you could put the .so file there. I think you have to be careful about where the System.loadLibrary() call is issued, since a native library can only be loaded for one class loader. This has implications for sharing the code across applications and for redeploying applications. - Chuck THIS COMMUNICATION MAY CONTAIN CONFIDENTIAL AND/OR OTHERWISE PROPRIETARY MATERIAL and is thus for use only by the intended recipient. If you received this in error, please contact the sender and delete the e-mail and its attachments from all computers. - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
Re: Using native and ld_library_path
Caldarale, Charles R wrote: Yes, except the property name is java.library.path (LD_LIBRARY_PATH is only the environment variable name). The default for Linux systems is /usr/lib:/lib (for UNIX, it's just /usr/lib), so you could put the .so file there. I tried putting all of the files there but still get the same java.lang.UnsatisfiedLinkError when trying to invoke the method. When issuing the command System.out.println(System.getProperties().get(java.library.path)); right before the error occurs I can see the correct folders there. Is there anything else that would differ between running this through tomcat than from prompt? I think you have to be careful about where the System.loadLibrary() call is issued, since a native library can only be loaded for one class loader. This has implications for sharing the code across applications and for redeploying applications. I never use System.loadLibrary() in the javacode that does work (outside tomcat), do I have to? -- Andreas Andersson IT Dept. Travelstart Nordic [EMAIL PROTECTED] http://www.travelstart.se - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
