Create a single backtrace library.
This library will be used to abstract away getting backtrace
data from how it is implemented. This is the first step to
replacing libcorkscrew with libunwind.
Bug: 8410085
Change-Id: Ie8f159e96a055d378e1ddc72d40239fba4cf52b7
diff --git a/libbacktrace/backtrace_testlib.c b/libbacktrace/backtrace_testlib.c
new file mode 100644
index 0000000..9400549
--- /dev/null
+++ b/libbacktrace/backtrace_testlib.c
@@ -0,0 +1,56 @@
+/*
+ * Copyright (C) 2013 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 <stdbool.h>
+#include <unistd.h>
+
+int test_level_four(int one, int two, int three, int four,
+ bool (*callback_func)(pid_t)) {
+ if (callback_func != NULL) {
+ callback_func(-1);
+ } else {
+ while (1) {
+ }
+ }
+ return one + two + three + four;
+}
+
+int test_level_three(int one, int two, int three, int four,
+ bool (*callback_func)(pid_t)) {
+ return test_level_four(one+3, two+6, three+9, four+12, callback_func) + 3;
+}
+
+int test_level_two(int one, int two, int three, int four,
+ bool (*callback_func)(pid_t)) {
+ return test_level_three(one+2, two+4, three+6, four+8, callback_func) + 2;
+}
+
+int test_level_one(int one, int two, int three, int four,
+ bool (*callback_func)(pid_t)) {
+ return test_level_two(one+1, two+2, three+3, four+4, callback_func) + 1;
+}
+
+int test_recursive_call(int level, bool (*callback_func)(pid_t)) {
+ if (level > 0) {
+ return test_recursive_call(level - 1, callback_func) + level;
+ } else if (callback_func != NULL) {
+ callback_func(-1);
+ } else {
+ while (1) {
+ }
+ }
+ return 0;
+}