From efdd908807544de7bee8644fafc1400e6a32d936 Mon Sep 17 00:00:00 2001
From: Ben Pfaff <blp@nicira.com>
Date: Wed, 30 Jun 2010 13:28:22 -0700
Subject: [PATCH] Simplify shash_find() followed by shash_add() into
 shash_add_once().

This is just a cleanup.
---
 lib/fatal-signal.c | 4 +---
 lib/netdev.c       | 4 +---
 lib/ovsdb-idl.c    | 6 ++----
 vswitchd/bridge.c  | 4 +---
 4 files changed, 5 insertions(+), 13 deletions(-)

diff --git a/lib/fatal-signal.c b/lib/fatal-signal.c
index 2e38fc51..0f360368 100644
--- a/lib/fatal-signal.c
+++ b/lib/fatal-signal.c
@@ -215,9 +215,7 @@ fatal_signal_add_file_to_unlink(const char *file)
         fatal_signal_add_hook(unlink_files, cancel_files, NULL, true);
     }
 
-    if (!shash_find(&files, file)) {
-        shash_add(&files, file, NULL);
-    }
+    shash_add_once(&files, file, NULL);
 }
 
 /* Unregisters 'file' from being unlinked when the program terminates via
diff --git a/lib/netdev.c b/lib/netdev.c
index dc27fd74..38f4dd58 100644
--- a/lib/netdev.c
+++ b/lib/netdev.c
@@ -1483,9 +1483,7 @@ netdev_monitor_cb(struct netdev_notifier *notifier)
 {
     struct netdev_monitor *monitor = notifier->aux;
     const char *name = netdev_get_name(notifier->netdev);
-    if (!shash_find(&monitor->changed_netdevs, name)) {
-        shash_add(&monitor->changed_netdevs, name, NULL);
-    }
+    shash_add_once(&monitor->changed_netdevs, name, NULL);
 }
 
 /* Attempts to add 'netdev' as a netdev monitored by 'monitor'.  Returns 0 if
diff --git a/lib/ovsdb-idl.c b/lib/ovsdb-idl.c
index 62a33609..2537db7e 100644
--- a/lib/ovsdb-idl.c
+++ b/lib/ovsdb-idl.c
@@ -157,15 +157,13 @@ ovsdb_idl_create(const char *remote, const struct ovsdb_idl_class *class)
         struct ovsdb_idl_table *table = &idl->tables[i];
         size_t j;
 
-        assert(!shash_find(&idl->table_by_name, tc->name));
-        shash_add(&idl->table_by_name, tc->name, table);
+        shash_add_assert(&idl->table_by_name, tc->name, table);
         table->class = tc;
         shash_init(&table->columns);
         for (j = 0; j < tc->n_columns; j++) {
             const struct ovsdb_idl_column *column = &tc->columns[j];
 
-            assert(!shash_find(&table->columns, column->name));
-            shash_add(&table->columns, column->name, column);
+            shash_add_assert(&table->columns, column->name, column);
         }
         hmap_init(&table->rows);
         table->idl = idl;
diff --git a/vswitchd/bridge.c b/vswitchd/bridge.c
index d4a08b92..b7f068bf 100644
--- a/vswitchd/bridge.c
+++ b/vswitchd/bridge.c
@@ -645,9 +645,7 @@ bridge_reconfigure(const struct ovsrec_open_vswitch *ovs_cfg)
         shash_init(&cur_ifaces);
         for (i = 0; i < n_dpif_ports; i++) {
             const char *name = dpif_ports[i].devname;
-            if (!shash_find(&cur_ifaces, name)) {
-                shash_add(&cur_ifaces, name, NULL);
-            }
+            shash_add_once(&cur_ifaces, name, NULL);
         }
         free(dpif_ports);
 
-- 
2.30.2