Better tdb tracing, start of decent replay_trace.

[ccan] / ccan / tdb / open.c

diff --git a/ccan/tdb/open.c b/ccan/tdb/open.c
index 8cd25cc5b5bc7802a9ebc3e7ad2ce0b7df4c9c28..4a1cb235e271228564038c6173b1056b21573be1 100644 (file)
--- a/ccan/tdb/open.c
+++ b/ccan/tdb/open.c
@@ -153,6 +153,9 @@ struct tdb_context *tdb_open_ex(const char *name, int hash_size, int tdb_flags,
        unsigned char *vp;
        uint32_t vertest;
        unsigned v;
+#ifdef TDB_TRACE
+       char tracefile[strlen(name) + 32];
+#endif
 
        if (!(tdb = (struct tdb_context *)calloc(1, sizeof *tdb))) {
                /* Can't log this */
@@ -206,6 +209,10 @@ struct tdb_context *tdb_open_ex(const char *name, int hash_size, int tdb_flags,
                        TDB_LOG((tdb, TDB_DEBUG_ERROR, "tdb_open_ex: tdb_new_database failed!"));
                        goto fail;
                }
+#ifdef TDB_TRACE
+               /* All tracing will fail.  That's ok. */
+               tdb->tracefd = -1;
+#endif
                goto internal;
        }
 
@@ -314,6 +321,15 @@ struct tdb_context *tdb_open_ex(const char *name, int hash_size, int tdb_flags,
                goto fail;
        }
 
+#ifdef TDB_TRACE
+       sprintf(tracefile, "%s.trace.%u", name, getpid());
+       tdb->tracefd = open(tracefile, O_WRONLY|O_CREAT|O_EXCL, 0600);
+       if (tdb->tracefd < 0)
+               goto fail;
+       tdb_enable_seqnum(tdb);
+       tdb_trace_open(tdb, "tdb_open", hash_size, tdb_flags, open_flags);
+#endif
+
  internal:
        /* Internal (memory-only) databases skip all the code above to
         * do with disk files, and resume here by releasing their
@@ -329,6 +345,8 @@ struct tdb_context *tdb_open_ex(const char *name, int hash_size, int tdb_flags,
 
        if (!tdb)
                return NULL;
+
+       close(tdb->tracefd);
        
        if (tdb->map_ptr) {
                if (tdb->flags & TDB_INTERNAL)
@@ -365,8 +383,9 @@ int tdb_close(struct tdb_context *tdb)
        struct tdb_context **i;
        int ret = 0;
 
+       tdb_trace(tdb, "tdb_close");
        if (tdb->transaction) {
-               tdb_transaction_cancel(tdb);
+               tdb_transaction_cancel_internal(tdb);
        }
 
        if (tdb->map_ptr) {
@@ -388,6 +407,7 @@ int tdb_close(struct tdb_context *tdb)
                }
        }
 
+       close(tdb->tracefd);
        memset(tdb, 0, sizeof(*tdb));
        SAFE_FREE(tdb);