patacongo opened a new issue, #9978:
URL: https://github.com/apache/nuttx/issues/9978
For sigprocmask(), the sigprocmaks mask in the TCB and is modified in
nxsig_procmask(). This is like:
121 case SIG_BLOCK:
122 sigorset(&rtcb->sigprocmask, &rtcb->sigprocmask, set);
123 break;
124
129 case SIG_UNBLOCK:
130 nxsig_nandset(&rtcb->sigprocmask, &rtcb->sigprocmask,
set);
131 break;
132
135 case SIG_SETMASK:
136 rtcb->sigprocmask = *set;
137
This seems wrong to me, however. The sigprocmask is a global mask, not a
per-thread mask! When the sigprocmask is set, shouldn't signals sent to the
entire task group be blocked? Not just for a single thread. This needs some
thought.
The primary purpose of the per-thread sigprocmask is controlling which
threads can receive which signals. Disabling a signal in the sigprocmask
For pthread_sigprocmask(), the sigprocmask is also currently set in
nxsig_procmask(). This is correct, but means that pthread_sigprocmask() and
sigprocmask() are identical. That can't be right.
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