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8 messages in net.java.dev.jna.usersRe: [jna-users] "Native call setup fa...| From | Sent On | Attachments |
|---|---|---|
| Duncan McGregor | Dec 13, 2007 6:52 am | |
| Duncan McGregor | Dec 13, 2007 7:19 am | |
| Timothy Wall | Dec 13, 2007 7:41 am | |
| Timothy Wall | Dec 13, 2007 8:01 am | |
| Duncan McGregor | Dec 13, 2007 2:12 pm | |
| Timothy Wall | Dec 13, 2007 4:14 pm | |
| Duncan McGregor | Dec 14, 2007 2:35 am | |
| Duncan McGregor | Dec 14, 2007 3:55 am |
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| Subject: | Re: [jna-users] "Native call setup failure" passing struct of struct by value | Actions... |
|---|---|---|
| From: | Timothy Wall (twal...@dev.java.net) | |
| Date: | Dec 13, 2007 8:01:18 am | |
| List: | net.java.dev.jna.users | |
Since you get *both* a memory error and an invalid struct typedef, it's possible that something is being prematurely GC'd, or not properly set up.
Look at init_type in dispatch.c, which is where ffi typecodes are translated to real ffi types. If the layout is done improperly it could result in either error.
You might get some mileage by attaching gdb to the java process so that it can catch the invalid access (recompile the native stuff with "make DEBUG=true" or "ant -Ddebug=true" to get better source visibility).
There's a method you can call from gdb that makes the apple VM dump the java stack, google "apple gdb java stack dump" 'cuz I don't remember offhand.
On Dec 13, 2007, at 9:53 AM, Duncan McGregor wrote:
I have a weird intermittent test failure passing QTTimeRange structs to a QTMovie on Mac.
public class QTTimeRange extends Structure implements Structure.ByValue { public QTTime time; public QTTime duration;
public class QTTime extends Structure implements Structure.ByValue { public long timeValue; public int timeScale; public int flags;
The calling code says
movie.setSelection(new QTTimeRange(new QTTime(50, 1000), new QTTime (750, 1000)));
which maps onto a call to objc_msgSend(ID, SEL, ...)
Some of the time the call succeeds, sometimes I get E_BAD_ACCESS of varying locations, and sometimes I get an exception
Caused by: java.lang.IllegalArgumentException: Native call setup failure: 1 at com.sun.jna.Function.invokeInt(Native Method) at com.sun.jna.Function.invoke(Function.java:301) at com.sun.jna.Function.invoke(Function.java:236) at com.sun.jna.LibraryHandler.invoke(LibraryHandler.java:132) at $Proxy2.objc_msgSend(Unknown Source)
The QTTimeRange always looks like this
2:37:36 PM Foundation.send - calling objc_msgSend([ID 0x36c100], [Selector setSelection:], org.rococoa.quicktime.QTTimeRange(Native Allocated Memory <0x367f00> (32 bytes)) class org.rococoa.quicktime.QTTime time@0=org.rococoa.quicktime.QTTime(Native Allocated Memory <0x3911e0> (16 bytes)) long timeValue@0=50 int timeScale@8=1000 int flags@c=0 memory dump [00000000] [00000000] [00000000] [00000000] class org.rococoa.quicktime.QTTime duration@10=org.rococoa.quicktime.QTTime(Native Allocated Memory <0x3875c0> (16 bytes)) long timeValue@0=750 int timeScale@8=1000 int flags@c=0 memory dump [00000000] [00000000] [00000000] [00000000] memory dump [00000000] [00000000] [00000000] [00000000] [00000000] [00000000] [00000000] [00000000])
I had thought that the movie might not be fully loaded, but waiting doesn't seem to change anything. Is there any likely cause of "Native call setup failure: 1"?
Thanks
Duncan (Currently mourning the passing of Quicktime for Java, RIP :-(