[652] in java-interest
native methods question: bodyof() and execute_method
daemon@ATHENA.MIT.EDU (Ian Smith)
Tue Jul 11 21:32:11 1995
From: Ian Smith <iansmith@parc.xerox.com>
To: java-interest@java.sun.com
Reply-To: Ian Smith <iansmith@parc.xerox.com>
Date: Tue, 11 Jul 1995 16:54:44 PDT
I guess I'm missing something but I can't seem to find any discussion
of my problems in the mail archives so here goes...
If one looks at :
doc:///doc/rpi/rpi_13.html#HEADING21
One sees references to some C functions and macros...In particular I'm
interested in : execute_method() and bodyof(). (bodyof() is supposed
to be a macro.) I can't seem to find these at run-time link (I get a
'relocation error:symbol not found') which I supposed is because java
is using RTLD_LAZY . Does anyone have any clues?
I did an nm on the binary of hotjava and found neither but did find
what appear to be some relatives of execute_method():
<SOMEMACHINE>:<SOMEDIR>/ (107) >nm java | grep execute
[666] | 125096| 68|FUNC |GLOB |0 |8 |execute_java_static_method
[670] | 125400| 60|FUNC |GLOB |0 |8 |do_execute_java_method
[730] | 125584| 1592|FUNC |GLOB |0 |8 |do_execute_java_method_vararg
[766] | 192296| 104|FUNC |GLOB |0 |8 |execute_finalizer
[1000] | 125184| 196|FUNC |GLOB |0 |8 |execute_java_constructor
[1053] | 125008| 68|FUNC |GLOB |0 |8 |execute_java_dynamic_method
Further, these are the names that appear in the .h files
(include/interpreter.h), so I assumed the interfaces had changed and
the doc had not been updated. However, the call interface to
execute_java_dynamic_method() is different from execute_method... should
this worry me? I did figure out that it eppars you just separate out
the signature and the method to get execute_java_dynamic_method() to
work a little bit...
Now, as for bodyof() this sybmol is not in the binary, but I expected
this since the documentation indicated that this was a macro. I was
unable to find any references to it in the include directory or its
subdirs. This makes me wonder what I should use to get at an array
from C? Further, in looking at the demo Makefile it appears to want to
reference a directory caled "CClassHeaders" but I was unable to locate
this in either of the 2 java installations I had access to. I also
looked around some in the include files for the source distribution,
and also was unable to locate this directory...
Has anyone else discovered/fixed these problems?
thanks a lot,
ian
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Ian Smith, PARC Intern=iansmith@parc.xerox.com, Normal=iansmith@cc.gatech.edu
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