So, I spent all day downloading the javax.usb packages, compiling them... then writing code to use them. Now, when I run my program, the machine grinds to a halt! Here's all that I've learned, and if someone could tell me what's going on that would be fantastic!
Latest released javax.usb code (1.0.1), compiled today on this machine. OS: Linux localhost.localdomain 2.6.9-1.667 #1 Thu Aug 11 16:18:41 CDT 2005 i686 athlon i386 GNU/Linux (Fedora Core 3 - I think) gcc version 3.4.2 20041017 (Red Hat 3.4.2-6.fc3) java version "1.5.0" Java(TM) 2 Runtime Environment, Standard Edition (build 1.5.0-b64) Java HotSpot(TM) Client VM (build 1.5.0-b64, mixed mode) So... my code simply goes through the usb topology, recursively printing out all the information for all the objects it sees. That works fine. When it sees a UsbInterface that is configured/active, it gets the in/out UsbEndpoints and puts them in Hashtables, with the devices vendor/product ids (concatenated to a string) as the key. That way, I can just ask the hashtable for the "in" endpoint for device "123/456". Which works. Once it does that, it get's a particular device, claims the interface, get's the output pipe, and sends a string. Then it quits. What seems to happen is that once I've walked through the device tree, the whole computer slows to a crawl until the program ends. Hooking up a remote debugger (Eclipse) shows a bunch of threads fired up... and the debugger even has trouble getting the jvm to respond because the machine is so hosed. I tried fiddling with the settings in javax.usb.properties - setting the polling to true, then false, chaning the poll time... nothing affects this weird behvior. JNI tracing doesn't seem to do anything, either. (I've searched my whole machine for any conflicting libraries, jar files, and property files - it's clean). Any ideas??? Thanks in advance!!! ------------------------------------------------------------------------- This SF.net email is sponsored by DB2 Express Download DB2 Express C - the FREE version of DB2 express and take control of your XML. No limits. Just data. Click to get it now. http://sourceforge.net/powerbar/db2/ _______________________________________________ javax-usb-devel mailing list javax-usb-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/javax-usb-devel
