dedup

commit 9ffbdb14b746f421734fd66435a330b033edbad6
parent e0161df4361701471430efb134e1f37906bd6226
Author: sin <sin@2f30.org>
Date:   Mon, 18 Feb 2019 13:33:13 +0000

Don't flush cache if it hasn't been modified

Diffstat:
M
dedup.c
 | 
6
++++++

1 file changed, 6 insertions(+), 0 deletions(-)
diff --git a/dedup.c b/dedup.c
@@ -78,6 +78,7 @@ int ifd;
 int sfd;
 int cfd;
 int verbose;
+int cache_dirty;
 char *argv0;
 
 /*
@@ -285,6 +286,9 @@ flush_cache(void)
 {
 	struct cent *cent;
 
+	if (!cache_dirty)
+		return;
+
 	lseek(cfd, 0, SEEK_SET);
 	RB_FOREACH(cent, cache, &cache_head)
 		xwrite(cfd, &cent->bdescr, sizeof(cent->bdescr));
@@ -451,6 +455,7 @@ dedup(int fd, char *msg)
 				cent = alloc_cent();
 				cent->bdescr = bdescr;
 				add_cent(cent);
+				cache_dirty = 1;
 
 				enthdr.st.actual_bytes += bdescr.size;
 				enthdr.st.cache_misses++;
@@ -583,6 +588,7 @@ rebuild_cache(struct ent *ent, void *arg)
 		memcpy(cent->bdescr.md, md, sizeof(cent->bdescr.md));
 		cent->bdescr = ent->bdescr[i];
 		add_cent(cent);
+		cache_dirty = 1;
 	}
 	free(buf);
 	return WALK_CONTINUE;