Date: Thu, 17 Jul 2003 15:52:55 -0700 (PDT) From: David Xu <davidxu@FreeBSD.org> To: src-committers@FreeBSD.org, cvs-src@FreeBSD.org, cvs-all@FreeBSD.org Subject: cvs commit: src/sys/kern kern_sig.c Message-ID: <200307172252.h6HMqtRv028716@repoman.freebsd.org>
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davidxu 2003/07/17 15:52:55 PDT
FreeBSD src repository
Modified files:
sys/kern kern_sig.c
Log:
Fix sigwait to conform to POSIX.
When a signal is being delivered to process, first find a sigwait
thread to deliver, POSIX's argument is speed of delivering signal
to sigwait thread is faster than other ways. A signal in its wait
set will cause sigwait to return the signal number, a signal not
in its wait set but in not blocked by the thread also causes sigwait
to return, but sigwait returns EINTR, sigwait is oneshot operation,
only one signal can be delivered to its wait set, when a signal is
delivered to the sigwait thread, the thread's sigwait state is canceled.
Revision Changes Path
1.252 +109 -67 src/sys/kern/kern_sig.c
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