[master] 27167c1f8 obj: Return BOC state reached from ObjWaitState()

[Dridi Boukelmoune]

commit 27167c1f809ab7af50d334dfa441a7dfef040f61
Author: Dridi Boukelmoune <dridi.boukelmoune at gmail.com>
Date:   Wed Oct 1 12:54:10 2025 +0200

    obj: Return BOC state reached from ObjWaitState()
    
    This will allow safe checks related to BOC states that are not guarded
    by the BOC lock.

diff --git a/bin/varnishd/cache/cache_obj.c b/bin/varnishd/cache/cache_obj.c
index 804c226aa..6cf110300 100644
--- a/bin/varnishd/cache/cache_obj.c
+++ b/bin/varnishd/cache/cache_obj.c
@@ -524,9 +524,10 @@ ObjSetState(struct worker *wrk, struct objcore *oc, enum boc_state_e next,
 /*====================================================================
  */
 
-void
+enum boc_state_e
 ObjWaitState(const struct objcore *oc, enum boc_state_e want)
 {
+	enum boc_state_e got;
 
 	CHECK_OBJ_NOTNULL(oc, OBJCORE_MAGIC);
 	CHECK_OBJ_NOTNULL(oc->boc, BOC_MAGIC);
@@ -540,7 +541,10 @@ ObjWaitState(const struct objcore *oc, enum boc_state_e want)
 			break;
 		(void)Lck_CondWait(&oc->boc->cond, &oc->boc->mtx);
 	}
+	got = oc->boc->state;
 	Lck_Unlock(&oc->boc->mtx);
+
+	return (got);
 }
 
 /*====================================================================
diff --git a/bin/varnishd/cache/cache_varnishd.h b/bin/varnishd/cache/cache_varnishd.h
index 56ce1c14b..a2edf2083 100644
--- a/bin/varnishd/cache/cache_varnishd.h
+++ b/bin/varnishd/cache/cache_varnishd.h
@@ -346,7 +346,7 @@ uint64_t ObjWaitExtend(const struct worker *, const struct objcore *,
     uint64_t l, enum boc_state_e *statep);
 void ObjSetState(struct worker *, struct objcore *, enum boc_state_e next,
     unsigned broadcast);
-void ObjWaitState(const struct objcore *, enum boc_state_e want);
+enum boc_state_e ObjWaitState(const struct objcore *, enum boc_state_e want);
 void ObjTouch(struct worker *, struct objcore *, vtim_real now);
 void ObjFreeObj(struct worker *, struct objcore *);
 void ObjSlim(struct worker *, struct objcore *);