Get rid of some old assumptions and simplify things correspondingly:

Move the objindex pointer and length to the segment table, having it
in the segment signatures is just a waste of disk-access on startup.

Put empty signatures at segment head, objidx and segment tail.

Align allocations to 16 bytes boundaries, for cache and hexdump
convenience.

Discard unsused segments on close.



git-svn-id: http://www.varnish-cache.org/svn/trunk/varnish-cache@4279 d4fa192b-c00b-0410-8231-f00ffab90ce4

include/persistent.h

@@ -124,16 +124,8 @@ struct smp_sign {
 struct smp_segptr {
 	uint64_t		offset;
 	uint64_t		length;
-};
-
-/*
- * Ban description
- */
-
-struct smp_ban {
-	double			ttl;
-	uint16_t		length;
-	uint8_t			valid;
+	uint64_t		objlist;
+	uint32_t		nalloc;
 };
 
 /*
@@ -147,12 +139,3 @@ struct smp_object {
 	struct object		*ptr;
 	uint64_t		len;	/* XXX: madvise */
 };
-
-/*
- * Segment
- */
-
-struct smp_segment {
-	uint64_t		objlist;
-	uint32_t		nalloc;
-};