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<P><FONT SIZE=2>Hi all,</FONT>
</P>
<P><FONT SIZE=2>I do hope someone can help me out here because it's a real stopper for my app. I was getting sporadic VM crashes when calling my plugin, which I have now got down to a very small subset of code to reproduce the problem. The crash dump never has a stack trace and sometimes it fails so bad no dump is produced. Essentially what I have is a 'C' method that returns and array of 4096 float values. I have taken away all the application C code and simply load and return an array, so I am quite sure it's not the C code that's breaking but somewhere in the C/Squeak interface. Here is what I have (stripped to minimum for clarity). For testing I am running this flat out in a loop. If I run 100,000 iterations I will usually but not always get a crash. Is there anything I can do to isolate this a bit further?</FONT></P>
<P><FONT SIZE=2>Thanks in advance for any help.</FONT>
</P>
<P><FONT SIZE=2>Bob</FONT>
</P>
<P><FONT SIZE=2>The C code:</FONT>
<BR><FONT SIZE=2>-----------</FONT>
</P>
<P><FONT SIZE=2>void process_test(float *results) {</FONT>
<BR> <FONT SIZE=2>float a[4096];</FONT>
<BR> <FONT SIZE=2>int i;</FONT>
<BR> <FONT SIZE=2>float f = 0.0;</FONT>
<BR> <FONT SIZE=2>for(i=0;i<4096;i++){</FONT>
<BR> <FONT SIZE=2>a[i] = f;</FONT>
<BR> <FONT SIZE=2>f = f + 1.0;</FONT>
<BR> <FONT SIZE=2>}</FONT>
<BR> <FONT SIZE=2>memcpy((void *)results, a, 4096*sizeof(float));</FONT>
<BR><FONT SIZE=2>}</FONT>
</P>
<P><FONT SIZE=2>The plugin code which is translated and compiled with the C code:</FONT>
<BR><FONT SIZE=2>----------------</FONT>
</P>
<P><FONT SIZE=2>test: data</FONT>
<BR> <FONT SIZE=2>self export: true.</FONT>
</P>
<P> <FONT SIZE=2>self primitive: 'test'</FONT>
<BR> <FONT SIZE=2>parameters:#(FloatArray).</FONT>
</P>
<P> <FONT SIZE=2>(self cCode: 'process_test(data)').</FONT>
<BR> <FONT SIZE=2>^data.</FONT>
</P>
<P><FONT SIZE=2>The calling code:</FONT>
<BR><FONT SIZE=2>-----------------</FONT>
</P>
<P><FONT SIZE=2>primTest: data</FONT>
<BR><FONT SIZE=2> <primitive: 'test' module:'SDRDttSpDSPPlugin'></FONT>
<BR> <FONT SIZE=2>Transcript show: 'Primitive Test failed'.</FONT>
<BR><FONT SIZE=2> ^ false</FONT>
</P>
<P><FONT SIZE=2>Finally, the method I call:</FONT>
<BR><FONT SIZE=2>------------------</FONT>
</P>
<P><FONT SIZE=2>test</FONT>
<BR> <FONT SIZE=2>|data|</FONT>
</P>
<P> <FONT SIZE=2>data := FloatArray new: 4096.</FONT>
<BR> <FONT SIZE=2>self primTest: data.</FONT>
<BR> <FONT SIZE=2>^ data.</FONT>
</P>
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