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<p>Hi,<br>
I suggest you start looking at some of the documents we have
available to get started - for JDK 19 you can look here:</p>
<p><a class="moz-txt-link-freetext" href="https://github.com/openjdk/panama-foreign/blob/21452ec32b27ba906ec06253e4a7af9037728174/doc/panama_memaccess.md">https://github.com/openjdk/panama-foreign/blob/21452ec32b27ba906ec06253e4a7af9037728174/doc/panama_memaccess.md</a></p>
<p>In short, you always need to provide a layout constant of the
right kind when doing allocation using an allocator (and also when
doing dereference).</p>
<p>Value layout constants are provided in the ValueLayout class
(e.g. ValueLayout.JAVA_DOUBLE).</p>
<p>If you use jextract, additional constants (e.g. C_INT, C_LONG,
...) will be provided.<br>
</p>
<div class="moz-cite-prefix">On 23/12/2022 16:20, Martin Pernollet
wrote:<br>
</div>
<blockquote type="cite" cite="mid:2LW-wXhOpJvTdPl-Xf_PbxptkED52CmZbZlnTvIkuPE_ZjsK856uktmsoysSJKtKN1MgcE6_GpGcYEhs92t9COeSUu9olgSuBKvpV1MBxE8=@protonmail.com">
<div style="font-family: Arial; font-size: 14px;">Hi,</div>
<div style="font-family: Arial; font-size: 14px;"><br>
</div>
<div style="font-family: Arial; font-size: 14px;">Would anyone
suggest examples showing how to use Panama 19 instead of 17? A
couple of things have changed ( e.g. how to use the new
<pre style="background-color:#2b2b2b;color:#a9b7c6;font-family:'JetBrains Mono',monospace;font-size:9,8pt"><span style="color:#9876aa">locator</span>.allocateArray(<span style="color:#cc7832">new </span>ValueLayout.OfDouble(</pre>
, and deal with all other datatypes, strings, etc).</div>
<div style="font-family: Arial; font-size: 14px;"><br>
</div>
<div style="font-family: Arial; font-size: 14px;">One additional
question : when will ARM be supported to run panama on Apple
M1? <br>
</div>
</blockquote>
<p>Apple M1 is mostly supported on JDK 19 - modulo few corner cases
which have been addressed in Java 20.</p>
<p>Maurizio<br>
</p>
<blockquote type="cite" cite="mid:2LW-wXhOpJvTdPl-Xf_PbxptkED52CmZbZlnTvIkuPE_ZjsK856uktmsoysSJKtKN1MgcE6_GpGcYEhs92t9COeSUu9olgSuBKvpV1MBxE8=@protonmail.com">
<div style="font-family: Arial; font-size: 14px;"><br>
</div>
<div class="protonmail_signature_block" style="font-family: Arial;
font-size: 14px;">
<div class="protonmail_signature_block-user
protonmail_signature_block-empty"> </div>
<div class="protonmail_signature_block-proton">Regards,</div>
<div class="protonmail_signature_block-proton"><br>
</div>
<div class="protonmail_signature_block-proton">Martin</div>
</div>
</blockquote>
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