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</o:shapelayout></xml><![endif]--></head><body lang=EN-US link="#0563C1" vlink="#954F72"><div class=WordSection1><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>With reverse-connect, lldb gets a port from the OS, spawns a listen thread using the port, and launches lldb-server/debugserver, telling it to connect back to lldb. lldb with then join with the listen thread. The listen thread calls accept() to wait for the server to connect back to it.<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>On Linux (and possibly other OSes), if lldb-server dies or quits before connecting, lldb will hang. It sits waiting for accept() to return, but it never will.<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>If the child dies, the listen thread should be killed, and an error returned to the user.<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>This is easily seen on Linux. Simply point to an alternate debugserver. Set LLDB_DEBUGSERVER_PATH to something else, say /bin/ls. This will finish and never connect back to lldb.<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>-> setenv LLDB_DEBUGSERVER_PATH /bin/ls<o:p></o:p></p><p class=MsoNormal>->bin/lldb /bin/ls<o:p></o:p></p><p class=MsoNormal>(lldb) target create "/bin/ls"<o:p></o:p></p><p class=MsoNormal>Current executable set to '/bin/ls' (x86_64).<o:p></o:p></p><p class=MsoNormal>(lldb) r<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal><hang><o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>--<o:p></o:p></p><p class=MsoNormal>Qualcomm Innovation Center, Inc.<o:p></o:p></p><p class=MsoNormal>The Qualcomm Innovation Center, Inc. is a member of Code Aurora Forum, a Linux Foundation Collaborative Project<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p></div></body></html>