From: Sebastian Harl <sh@tokkee.org>
Date: Fri, 7 Mar 2014 13:52:59 +0000 (+0100)
Subject: utils llist: Let llist_get() increment the reference count.
X-Git-Tag: sysdb-0.1.0~172
X-Git-Url: https://git.tokkee.org/?p=sysdb.git;a=commitdiff_plain;h=8fae96642304f80a5ce343626970b1cff87123f2

utils llist: Let llist_get() increment the reference count.

This feels more consistent.
---

diff --git a/src/frontend/connection.c b/src/frontend/connection.c
index b48de2c..fdbb26f 100644
--- a/src/frontend/connection.c
+++ b/src/frontend/connection.c
@@ -301,8 +301,10 @@ command_handle(sdb_conn_t *conn)
 					node = SDB_CONN_NODE(sdb_llist_get(parsetree, 0));
 			}
 
-			if (node)
+			if (node) {
 				status = sdb_fe_exec(conn, node);
+				sdb_object_deref(SDB_OBJ(node));
+			}
 
 			sdb_llist_destroy(parsetree);
 			break;
diff --git a/src/frontend/parser.c b/src/frontend/parser.c
index e8c0cde..6504a66 100644
--- a/src/frontend/parser.c
+++ b/src/frontend/parser.c
@@ -121,6 +121,7 @@ sdb_fe_parse_matcher(const char *expr, int len)
 		m = NULL;
 
 	sdb_llist_destroy(yyextra.parsetree);
+	sdb_object_deref(SDB_OBJ(node));
 	return m;
 } /* sdb_fe_parse_matcher */
 
diff --git a/src/include/utils/llist.h b/src/include/utils/llist.h
index 3eefae5..9356190 100644
--- a/src/include/utils/llist.h
+++ b/src/include/utils/llist.h
@@ -121,7 +121,9 @@ sdb_llist_insert_sorted(sdb_llist_t *list,
 
 /*
  * sdb_llist_get:
- * Returns the i-th element of the list or NULL in case of an error.
+ * Returns the i-th element of the list or NULL in case of an error. The
+ * reference count of the element is incremented before returning it to share
+ * ownership between the list and the caller.
  */
 sdb_object_t *
 sdb_llist_get(sdb_llist_t *list, size_t i);
diff --git a/src/utils/llist.c b/src/utils/llist.c
index 2dc7781..f009bcd 100644
--- a/src/utils/llist.c
+++ b/src/utils/llist.c
@@ -321,6 +321,7 @@ sdb_llist_get(sdb_llist_t *list, size_t i)
 		/* iterate */;
 
 	assert(elem);
+	sdb_object_ref(elem->obj);
 	return elem->obj;
 } /* sdb_llist_get */
 
diff --git a/t/frontend/parser_test.c b/t/frontend/parser_test.c
index 64580b9..acd8ee6 100644
--- a/t/frontend/parser_test.c
+++ b/t/frontend/parser_test.c
@@ -91,6 +91,7 @@ START_TEST(test_parse)
 					"sdb_fe_parse(LIST)->cmd = %i; expected: %d "
 					"(CONNECTION_LIST)", SDB_CONN_NODE(obj)->cmd,
 					CONNECTION_LIST);
+			sdb_object_deref(obj);
 		}
 
 		sdb_llist_destroy(check);
diff --git a/t/utils/llist_test.c b/t/utils/llist_test.c
index 5197bd1..9539c91 100644
--- a/t/utils/llist_test.c
+++ b/t/utils/llist_test.c
@@ -179,9 +179,10 @@ START_TEST(test_sdb_llist_get)
 		fail_unless(check == &golden_data[i],
 				"sdb_llist_get() = NULL; expected: %p",
 				&golden_data[i]);
-		fail_unless(check->ref_cnt == 2,
-				"sdb_llist_get() changed reference count; got: %i; "
-				"expected: 2", check->ref_cnt);
+		fail_unless(check->ref_cnt == 3,
+				"sdb_llist_get() didn't increment reference count; got: %i; "
+				"expected: 3", check->ref_cnt);
+		sdb_object_deref(check);
 	}
 }
 END_TEST