Add test checking init/fini call order
This test is checking that loader complies with the order described in
http://www.sco.com/developers/gabi/latest/ch5.dynamic.html#init_fini
Bug: http://b/35201832
Test: bionic-unit-tests --gtest_filter=dl*:Dl*
Test: bionic-unit-tests-glibc --gtest_filter=dl*
Change-Id: I4cdf878c043112442c191e82aa9f5d5077e4d8c4
diff --git a/tests/libs/dlopen_check_init_fini_root.cpp b/tests/libs/dlopen_check_init_fini_root.cpp
new file mode 100644
index 0000000..45394ec
--- /dev/null
+++ b/tests/libs/dlopen_check_init_fini_root.cpp
@@ -0,0 +1,46 @@
+/*
+ * Copyright (C) 2017 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+#include <string>
+
+static int volatile g_initialization_order_code;
+
+void (*g_fini_callback)(const char*) = nullptr;
+
+// These two function are called by local group's constructors and destructors
+extern "C" void record_init(int digit) {
+ g_initialization_order_code = g_initialization_order_code*10 + digit;
+}
+
+extern "C" void record_fini(const char* s) {
+ g_fini_callback(s);
+}
+
+// these 2 functions are used by the test
+extern "C" int get_init_order_number() {
+ return g_initialization_order_code;
+}
+
+extern "C" void set_fini_callback(void (*f)(const char*)) {
+ g_fini_callback = f;
+}
+
+static void __attribute__((constructor)) init() {
+ record_init(1);
+}
+
+static void __attribute__((destructor)) fini() {
+ record_fini("(root)");
+}