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<p>Hi Gavin,<br>
thanks for the question - actually this might trip up others as
well, so it's always good to ask here.<br>
</p>
<p>I believe this has been fixed recently:</p>
<p><a class="moz-txt-link-freetext" href="https://github.com/openjdk/jextract/pull/70">https://github.com/openjdk/jextract/pull/70</a></p>
<p>But the binary snapshots do not contain this fix.</p>
<p>In general inline functions (and function-like macros) are not
true library symbols, so there's not much the Linker can do for
them.</p>
<p>If you need to access these, you would need a native library
wrapper which exposes them as regular symbols.</p>
<p>(we'd like, at some point, to automate the wrapper generation in
jextract).</p>
<p>Maurizio<br>
</p>
<div class="moz-cite-prefix">On 21/09/2022 20:35, Gavin Ray wrote:<br>
</div>
<blockquote type="cite" cite="mid:CAFtvWZO47iczS1u+nxXYCc2XB+eZcj0cqu2aji0Vas3_4_fvKg@mail.gmail.com">
<div dir="ltr">
<div dir="ltr">
<div dir="ltr">I'm not super familiar with how linking and
symbols work
<div><br>
</div>
<div>The liburing header is weird, it contains a mix of
definitions:</div>
<div><a href="https://github.com/axboe/liburing/blob/master/src/include/liburing.h" moz-do-not-send="true" class="moz-txt-link-freetext">https://github.com/axboe/liburing/blob/master/src/include/liburing.h</a><br>
</div>
<div><br>
</div>
<div>Some of them are traditional header defs, like:</div>
<div><br>
</div>
</div>
<blockquote style="margin:0px 0px 0px
40px;border:none;padding:0px">
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<div>
<div>int io_uring_queue_init(unsigned entries, struct
io_uring *ring, unsigned flags);</div>
</div>
<div><br>
</div>
</div>
</blockquote>
But there are a lot of them which are defined like this:
<div>
<blockquote style="margin:0px 0px 0px
40px;border:none;padding:0px">
<div>
<div><br>
</div>
<div>static inline int io_uring_wait_cqe(struct io_uring
*ring, struct io_uring_cqe **cqe_ptr)</div>
</div>
<div><br>
</div>
</blockquote>
Using "objdump" on the ".so", I can see that none of these
"static inline" functions appear</div>
<div><br>
</div>
<div>I have an almost-working test of using io_uring purely
through Panama here, but it fails due to the above:</div>
<div><a href="https://github.com/GavinRay97/panama-liburing/blob/82f83a247bb78c26d787992fca28ea1b951dfd3c/lib/src/test/java/panama/liburing/LibraryTest.java#L25-L59" moz-do-not-send="true" class="moz-txt-link-freetext">https://github.com/GavinRay97/panama-liburing/blob/82f83a247bb78c26d787992fca28ea1b951dfd3c/lib/src/test/java/panama/liburing/LibraryTest.java#L25-L59</a><br>
</div>
<div><br>
</div>
<div>How are you meant to be able to use these from the
Foreign Memory API?</div>
<div>Do I need to write a second library and built it, that
re-exports these?</div>
<div><br>
</div>
<div>Thanks, and sorry for so many newbie questions</div>
<div><br>
</div>
<div><br>
</div>
</div>
</div>
</blockquote>
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