+/* bdevstate stuff */
+
+static LttvBdevState *get_hashed_bdevstate(LttvTraceState *ts, guint16 devcode)
+{
+ gint devcode_gint = devcode;
+ gpointer bdev = g_hash_table_lookup(ts->bdev_states, &devcode_gint);
+ if(bdev == NULL) {
+ LttvBdevState *bdevstate = g_malloc(sizeof(LttvBdevState));
+ bdevstate->mode_stack = g_array_new(FALSE, FALSE, sizeof(GQuark));
+
+ gint * key = g_malloc(sizeof(gint));
+ *key = devcode;
+ g_hash_table_insert(ts->bdev_states, key, bdevstate);
+
+ bdev = bdevstate;
+ }
+
+ return bdev;
+}
+
+static LttvBdevState *bdevstate_new(void)
+{
+ LttvBdevState *retval;
+ retval = g_malloc(sizeof(LttvBdevState));
+ retval->mode_stack = g_array_new(FALSE, FALSE, sizeof(GQuark));
+}
+
+static void bdevstate_free(LttvBdevState *bds)
+{
+ g_array_free(bds->mode_stack, FALSE);
+ g_free(bds);
+}
+
+static void bdevstate_free_cb(gpointer key, gpointer value, gpointer user_data)
+{
+ LttvBdevState *bds = (LttvBdevState *) value;
+
+ bdevstate_free(bds);
+}
+
+static LttvBdevState *bdevstate_copy(LttvBdevState *bds)
+{
+ LttvBdevState *retval;
+
+ retval = bdevstate_new();
+ g_array_insert_vals(retval->mode_stack, 0, bds->mode_stack->data, bds->mode_stack->len);
+}
+
+static void insert_and_copy_bdev_state(gpointer k, gpointer v, gpointer u)
+{
+ GHashTable *ht = (GHashTable *)u;
+ LttvBdevState *bds = (LttvBdevState *)v;
+ LttvBdevState *newbds;
+
+ newbds = bdevstate_copy(v);
+
+ g_hash_table_insert(u, k, newbds);
+}
+
+static GHashTable *lttv_state_copy_blkdev_hashtable(GHashTable *ht)
+{
+ GHashTable *retval;
+
+ retval = g_hash_table_new(g_int_hash, g_int_equal);
+
+ g_hash_table_foreach(ht, insert_and_copy_bdev_state, retval);
+
+ return retval;
+}
+
+/* Free a hashtable and the LttvBdevState structures its values
+ * point to. */
+
+static void lttv_state_free_blkdev_hashtable(GHashTable *ht)
+{
+ g_hash_table_foreach(ht, bdevstate_free_cb, NULL);
+ g_hash_table_destroy(ht);
+}
+