MTX Lock implementation question
Barney Cordoba
barney_cordoba at yahoo.com
Wed Mar 4 04:54:33 PST 2009
Suppose the following:
Module foo.c
foo_getlock(sc)
{
FOO_LOCK(sc);
}
foo_unlock(sc)
{
FOO_UNLOCK(sc);
}
foo_dosomething(sc)
{
MTX_LOCK_ASSERT(sc);
foo_dooit();
}
Module bar.c
bar_dofoo()
{
foo_getlock(sc);
foo_dosomething(sc);
foo_unlock(sc);
}
Is this something that shouldn't work? I need to access functions
that require locks in a different module, but this code barfs on
ASSERT with witness enabled. Is this a deflugalty in WITNESS, or do
I need to create functions within foo that do the locking? Its been
working ok for awhile (its not a high volume function) but when I
fired up witness to debug something else I encountered witness panics.
Thanks,
Barney
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