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author | jkoshy <jkoshy@FreeBSD.org> | 2004-01-01 05:16:35 +0000 |
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committer | jkoshy <jkoshy@FreeBSD.org> | 2004-01-01 05:16:35 +0000 |
commit | eb1c647689df17cbf6752dd1df21a8f6beedba6a (patch) | |
tree | 4b4c139c00788bfee94649246f0c5425ff351173 /share/man/man9/sx.9 | |
parent | a4ef00f2a300b8a76ad2a9a6b5426f7d00d68780 (diff) | |
download | FreeBSD-src-eb1c647689df17cbf6752dd1df21a8f6beedba6a.zip FreeBSD-src-eb1c647689df17cbf6752dd1df21a8f6beedba6a.tar.gz |
Add "options INVARIANTS" and "options INVARIANT_SUPPORT" to the
synopsis, with supporting text in the body of the manual page.
Add a cross-reference to panic(9) for completeness.
Reviewed by: ru (synopsis changes)
Diffstat (limited to 'share/man/man9/sx.9')
-rw-r--r-- | share/man/man9/sx.9 | 18 |
1 files changed, 14 insertions, 4 deletions
diff --git a/share/man/man9/sx.9 b/share/man/man9/sx.9 index 6da1adf..12158e7 100644 --- a/share/man/man9/sx.9 +++ b/share/man/man9/sx.9 @@ -68,6 +68,9 @@ .Fn sx_try_upgrade "struct sx *sx" .Ft void .Fn sx_downgrade "struct sx *sx" +.Pp +.Cd "options INVARIANTS" +.Cd "options INVARIANT_SUPPORT" .Ft void .Fn sx_assert "struct sx *sx" "int what" .In sys/kernel.h @@ -121,11 +124,17 @@ will return 0 if the shared lock cannot be upgraded to an exclusive lock immediately; otherwise the exclusive lock will be acquired and a non-zero value will be returned. .Pp -The +When compiled with +.Cd "options INVARIANTS" +and +.Cd "options INVARIANT_SUPPORT" , +the .Fn sx_assert -function tests specified conditions and panics if they are not met and the -kernel is compiled with -.Dv INVARIANTS . +function tests +.Ar sx +for the assertions specified in +.Ar what +and panics if they are not met. The following assertions are supported: .Bl -tag -width ".Dv SX_XLOCKED" .It Dv SX_LOCKED @@ -166,6 +175,7 @@ It is allowed to own a shared lock or an exclusive lock while sleeping. .Xr condvar 9 , .Xr mtx_pool 9 , .Xr mutex 9 , +.Xr panic 9 , .Xr sema 9 .Sh BUGS Currently there is no way to assert that a lock is not held. |