Honor db_pager_quit in 'show threadchain', 'show allchains', and
'show lockchain'. This is especially helpful for the first 2 as a threadchain could get stuck in an infinite loop during a mutex deadlock.
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parent
19e9205a23
commit
fed7988436
Notes:
svn2git
2020-12-20 02:59:44 +00:00
svn path=/head/; revision=160313
@ -1046,7 +1046,7 @@ print_threadchain(struct thread *td, const char *prefix)
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* Follow the chain. We keep walking as long as the thread is
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* blocked on a turnstile that has an owner.
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*/
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for (;;) {
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while (!db_pager_quit) {
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db_printf("%sthread %d (pid %d, %s) ", prefix, td->td_tid,
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td->td_proc->p_pid, td->td_name[0] != '\0' ? td->td_name :
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td->td_proc->p_comm);
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@ -1110,6 +1110,8 @@ DB_SHOW_COMMAND(allchains, db_show_allchains)
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db_printf("chain %d:\n", i++);
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print_threadchain(td, " ");
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}
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if (db_pager_quit)
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return;
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}
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}
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}
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@ -1122,6 +1124,8 @@ print_waiter(struct thread *td, int indent)
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struct turnstile *ts;
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int i;
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if (db_pager_quit)
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return;
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for (i = 0; i < indent; i++)
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db_printf(" ");
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print_thread(td, "thread ");
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@ -1137,6 +1141,8 @@ print_waiters(struct turnstile *ts, int indent)
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struct thread *td;
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int i;
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if (db_pager_quit)
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return;
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lock = ts->ts_lockobj;
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class = LOCK_CLASS(lock);
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for (i = 0; i < indent; i++)
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