Remove obj.last_use

bin/varnishd/builtin.vcl

@@ -118,7 +118,6 @@ sub vcl_deliver {
      * Enable them only if you need them.
      *
      * set obj.hits = obj.hits + 1;
-     * set obj.last_use = now;
      */
     return (deliver);
 }

bin/varnishd/cache/cache.h

@@ -610,7 +610,6 @@ struct object {
 
 	/* VCL only variables */
 	long			hits;
-	double			last_use;
 
 	double			last_modified;
 

bin/varnishd/cache/cache_cli.c

@@ -200,7 +200,6 @@ cli_debug_sizeof(struct cli *cli, const char * const *av, void *priv)
 	OFOF(struct object, http);
 	OFOF(struct object, store);
 	OFOF(struct object, esidata);
-	OFOF(struct object, last_use);
 #endif
 #undef OFOF
 #endif

bin/varnishd/cache/cache_vrt_var.c

@@ -592,8 +592,6 @@ VRT_r_obj_##field(const struct vrt_ctx *ctx)				\
 
 VOBJ_L(long, hits)
 VOBJ_R(long, hits)
-VOBJ_L(double, last_use)
-VOBJ_R(double, last_use)
 
 unsigned
 VRT_r_obj_uncacheable(const struct vrt_ctx *ctx)

bin/varnishd/storage/stevedore.c

@@ -286,7 +286,6 @@ STV_MkObject(struct stevedore *stv, struct busyobj *bo,
 	HTTP_Setup(o->http, bo->ws_o, bo->vsl, SLT_ObjMethod);
 	o->http->magic = HTTP_MAGIC;
 	o->exp = bo->exp;
-	o->last_use = bo->t_fetch;
 	VTAILQ_INIT(&o->store);
 	bo->stats->n_object++;
 

bin/varnishtest/tests/v00013.vtc

-varnishtest "Check obj.hits and obj.last_use"
+varnishtest "Check obj.hits"
 
 server s1 {
 	rxreq
@@ -13,9 +13,7 @@ varnish v1 -vcl+backend {
 
 	sub vcl_deliver {
 		set resp.http.foo = obj.hits;
-		set resp.http.bar = now - obj.last_use;
 		set obj.hits = obj.hits + 1;
-		set obj.last_use = now;
 	}
 } -start
 

lib/libvcc/generate.py

@@ -546,15 +546,6 @@ sp_variables = [
 		( 'hit', ), """
 		"""
 	),
-	('obj.last_use',
-		'TIME',
-		( 'hit', 'deliver',),
-		( 'hit', 'deliver',), """
-		The approximate time elapsed since the object was
-		last requests, in seconds. This variable is also
-		available in vcl_deliver.
-		"""
-	),
 	('obj.uncacheable',
 		'BOOL',
 		( 'hit', ),