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Prevent the thread-safe version of kevent from getting

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into an infinite loop when a timeout value is supplied
and the timeout expires.

Reported by:	Dan Nelson <dnelson@emsphone.com>
Reviewed by:	jasone, jlemon
This commit is contained in:
Daniel Eischen 2000-11-09 05:00:06 +00:00
parent a5a18d3cbb
commit 9a6b83bf3b
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=68513
1 changed files with 3 additions and 2 deletions
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5
lib/libc_r/uthread/uthread_kevent.c
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@ -55,8 +55,9 @@ kevent(int kq, const struct kevent *changelist, int nchanges,
_thread_run->data.fd.branch = __LINE__;
do {
/* Reset the interrupted operation flag: */
/* Reset the interrupted and timeout flags: */
_thread_run->interrupted = 0;
_thread_run->timeout = 0;
_thread_kern_sched_state(PS_FDR_WAIT,
__FILE__, __LINE__);
@ -68,7 +69,7 @@ kevent(int kq, const struct kevent *changelist, int nchanges,
}
rc = _thread_sys_kevent(kq, NULL, 0,
eventlist, nevents, &nullts);
} while (rc == 0 && timeout != NULL);
} while (rc == 0 && _thread_run->timeout == 0);
}
return (rc);
}