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<p class="MsoNormal"><span style="font-family:"Courier New"">I have noticed that if I do not call exit() in the POSIX_Init() function, RTEMS executables will hang. Why must I call exit() to exit the POSIX_Init() function rather than conclude with a “return”
statement?<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-family:"Courier New""><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-family:"Courier New"">Take for example, the psx_example3 example application in the examples-v2 repository. The POSIX_Init() function concludes with a call to exit().<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-family:"Courier New"">See: examples-v2/posix_api/psx_example_3/test3.c<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-family:"Courier New"">Cmd: sparc-rtems5-run -a -leon3 psx_example_3.exe<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-family:"Courier New""><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-family:"Courier New"">It is less obvious in other examples in the examples-v2 repository. Take for example the psx_barrier_report example. The POSIX_Init() function in rtems_config.c concludes with “return NULL”, however,
upon closer inspection, control is transferred to the main() function in barrier_attr_report.c which concludes with a call to exit() and so control is never returned to the POSIX_Init() function (and therefore the “return NULL” statement is never executed).<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-family:"Courier New"">See: examples-v2/posix_api/psx_barrier_report/barrier_attr_report.c<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-family:"Courier New"">See: examples-v2/posix_api/psx_barrier_report/rtems_config.c<o:p></o:p></span></p>
<p class="MsoNormal" style="background:white"><span style="font-family:"Courier New"">Cmd: sparc-rtems5-run -a -leon3 psx_barrier_report.exe<o:p></o:p></span></p>
<p class="MsoNormal" style="background:white"><span style="font-family:"Courier New""><o:p> </o:p></span></p>
<p class="MsoNormal" style="background:white"><span style="font-family:"Courier New"">I am using rtems5 and the leon3 bsp + simulator.<o:p></o:p></span></p>
<p class="MsoNormal" style="background:white"><span style="font-family:"Courier New""><o:p> </o:p></span></p>
<p class="MsoNormal" style="background:white"><span style="font-family:"Courier New"">Sincerely,<o:p></o:p></span></p>
<p class="MsoNormal" style="background:white"><span style="font-family:"Courier New"">Keith<o:p></o:p></span></p>
<p class="MsoNormal" style="background:white"><span style="font-family:"Courier New""><o:p> </o:p></span></p>
<p class="MsoNormal" style="background:white"><span style="font-family:"Courier New"">--</span><o:p></o:p></p>
<p class="MsoNormal" style="background:white"><span style="font-family:"Courier New"">Keith Shearl Morgan</span><o:p></o:p></p>
<p class="MsoNormal" style="background:white"><span style="font-family:"Courier New"">ISR-3, Space Data Systems<o:p></o:p></span></p>
<p class="MsoNormal" style="background:white"><span style="font-family:"Courier New"">Los Alamos National Laboratory</span><o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
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