tdb2: Add stats attribute.

[ccan] / ccan / tdb2 / private.h

diff --git a/ccan/tdb2/private.h b/ccan/tdb2/private.h
index 6e9936f53b92a91c5993049f7335036405af3455..1a81286d5e36280a0fe9329474921ab6c480c9ff 100644 (file)
--- a/ccan/tdb2/private.h
+++ b/ccan/tdb2/private.h
@@ -331,6 +331,8 @@ struct tdb_context {
        uint64_t num_lockrecs;
        struct tdb_lock_type *lockrecs;
 
+       struct tdb_attribute_stats *stats;
+
        /* Single list of all TDBs, to avoid multiple opens. */
        struct tdb_context *next;
        dev_t device;   
@@ -466,6 +468,13 @@ int tdb_write_convert(struct tdb_context *tdb, tdb_off_t off,
 int tdb_read_convert(struct tdb_context *tdb, tdb_off_t off,
                     void *rec, size_t len);
 
+/* Adds a stat, if it's in range. */
+void add_stat_(struct tdb_context *tdb, uint64_t *stat, size_t val);
+#define add_stat(tdb, statname, val)                                   \
+       do {                                                            \
+               if (unlikely((tdb)->stats))                             \
+                       add_stat_((tdb), &(tdb)->stats->statname, (val)); \
+       } while (0)
 
 /* lock.c: */
 void tdb_lock_init(struct tdb_context *tdb);