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| H A D | resourcevar.h | diff 121636 Tue Oct 28 18:46:23 MST 2003 jhb According to the submitter, POSIX mandates that all interval timers are reset in a child process after a fork(). Currently, however, only the real timer is cleared while the virtual and profiling timers are inherited. The realtimer is cleared because it lives directly in struct proc in p_realtimer. It is in the zero'd section of struct proc. The other timers live in the p_timer[] array in struct pstats. These timers are copied on fork() rather than zero'd. The fix is to move p_timer[] to the zero'd part of struct pstats so that they are zero'd instead of copied on fork(). Note: Since at least FreeBSD 2.0 (and possibly earlier) we've had storage for two real interval timers. Now that the uarea is less important, perhaps we could move all of p_timer[] over to struct proc and drop the p_realtimer special case to fix that. PR: kern/58647 Reported by: Dan Nelson <dnelson@allantgroup.com> MFC after: 1 week |
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