lib/tdb: TDB_TRACE support (for developers)
[samba.git] / lib / tdb / common / open.c
index 141e6fe517da72cbcb39c20ce3cb03c56854e81d..f0061d7b3144dcc5572999201e53d26a93472445 100644 (file)
@@ -205,6 +205,10 @@ 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;
        }
 
@@ -315,6 +319,22 @@ struct tdb_context *tdb_open_ex(const char *name, int hash_size, int tdb_flags,
                goto fail;
        }
 
+#ifdef TDB_TRACE
+       {
+               char tracefile[strlen(name) + 32];
+
+               snprintf(tracefile, sizeof(tracefile),
+                        "%s.trace.%li", name, (long)getpid());
+               tdb->tracefd = open(tracefile, O_WRONLY|O_CREAT|O_EXCL, 0600);
+               if (tdb->tracefd >= 0) {
+                       tdb_enable_seqnum(tdb);
+                       tdb_trace_open(tdb, "tdb_open", hash_size, tdb_flags,
+                                      open_flags);
+               } else
+                       TDB_LOG((tdb, TDB_DEBUG_ERROR, "tdb_open_ex: failed to open trace file %s!\n", tracefile));
+       }
+#endif
+
  internal:
        /* Internal (memory-only) databases skip all the code above to
         * do with disk files, and resume here by releasing their
@@ -330,7 +350,10 @@ struct tdb_context *tdb_open_ex(const char *name, int hash_size, int tdb_flags,
 
        if (!tdb)
                return NULL;
-       
+
+#ifdef TDB_TRACE
+       close(tdb->tracefd);
+#endif
        if (tdb->map_ptr) {
                if (tdb->flags & TDB_INTERNAL)
                        SAFE_FREE(tdb->map_ptr);
@@ -366,8 +389,9 @@ 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(tdb);
        }
 
        if (tdb->map_ptr) {
@@ -389,6 +413,9 @@ int tdb_close(struct tdb_context *tdb)
                }
        }
 
+#ifdef TDB_TRACE
+       close(tdb->tracefd);
+#endif
        memset(tdb, 0, sizeof(*tdb));
        SAFE_FREE(tdb);