FreeBSD gdb does not allow to control running threads

Jin Guojun[VFF] jguojun at
Thu Mar 19 22:20:28 UTC 2020

I am using GNU gdb 6.1.1 [FreeBSD], and it does not allow to set 

gdb) show scheduler-locking
Mode for locking scheduler during execution is "off".
(gdb) set scheduler-locking on
Target 'freebsd-threads' cannot support this command.

Is any reason this feature is disabled?


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