Author: kib Date: Sat Oct 1 12:35:09 2011 New Revision: 225898 URL: http://svn.freebsd.org/changeset/base/225898
Log: MFC r225172: Clarify the behaviour of sigwait() on signal interruption, and note the difference between sigwait() and sigtimedwait()/sigwaitinfo(). Modified: stable/8/lib/libc/sys/sigwait.2 stable/8/lib/libc/sys/sigwaitinfo.2 Directory Properties: stable/8/lib/libc/ (props changed) stable/8/lib/libc/stdtime/ (props changed) Modified: stable/8/lib/libc/sys/sigwait.2 ============================================================================== --- stable/8/lib/libc/sys/sigwait.2 Sat Oct 1 12:19:48 2011 (r225897) +++ stable/8/lib/libc/sys/sigwait.2 Sat Oct 1 12:35:09 2011 (r225898) @@ -27,7 +27,7 @@ .\" .\" $FreeBSD$ .\" -.Dd November 11, 2005 +.Dd August 24, 2011 .Dt SIGWAIT 2 .Os .Sh NAME @@ -82,6 +82,14 @@ selected, it will be the lowest numbered The selection order between realtime and non-realtime signals, or between multiple pending non-realtime signals, is unspecified. +.Sh IMPLEMENTATION NOTES +The +.Fn sigwait +function is implemented as a wrapper around the +.Fn __sys_sigwait +system call, which retries the call on +.Er EINTR +error. .Sh RETURN VALUES If successful, .Fn sigwait Modified: stable/8/lib/libc/sys/sigwaitinfo.2 ============================================================================== --- stable/8/lib/libc/sys/sigwaitinfo.2 Sat Oct 1 12:19:48 2011 (r225897) +++ stable/8/lib/libc/sys/sigwaitinfo.2 Sat Oct 1 12:35:09 2011 (r225898) @@ -27,7 +27,7 @@ .\" .\" $FreeBSD$ .\" -.Dd November 11, 2005 +.Dd August 24, 2011 .Dt SIGTIMEDWAIT 2 .Os .Sh NAME @@ -116,6 +116,16 @@ except that the selected signal number s member, and the cause of the signal shall be stored in the .Va si_code member. +Besides this, the +.Fn sigwaitinfo +and +.Fn sigtimedwait +system calls may return +.Er EINTR +if interrupted by signal, which is not allowed for the +.Fn sigwait +function. +.Pp If any value is queued to the selected signal, the first such queued value is dequeued and, if the info argument is .Pf non- Dv NULL , _______________________________________________ svn-src-all@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/svn-src-all To unsubscribe, send any mail to "svn-src-all-unsubscr...@freebsd.org"
