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/unwind.c b/libbacktrace/unwind.c
new file mode 100644
index 0000000..f75e518
--- /dev/null
+++ b/libbacktrace/unwind.c
@@ -0,0 +1,57 @@
+/*
+ * 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 <backtrace/backtrace.h>
+
+#include "common.h"
+#include "unwind.h"
+
+bool backtrace_get_data(backtrace_t* backtrace, pid_t tid) {
+ backtrace->num_frames = 0;
+ backtrace->tid = tid;
+
+ backtrace->map_info_list = backtrace_create_map_info_list(tid);
+ if (tid < 0) {
+ return local_get_data(backtrace);
+ } else {
+ return remote_get_data(backtrace);
+ }
+}
+
+/* Free any memory related to the frame data. */
+void backtrace_free_data(backtrace_t* backtrace) {
+ free_frame_data(backtrace);
+
+ if (backtrace->map_info_list) {
+ backtrace_destroy_map_info_list(backtrace->map_info_list);
+ backtrace->map_info_list = NULL;
+ }
+
+ if (backtrace->tid < 0) {
+ local_free_data(backtrace);
+ } else {
+ remote_free_data(backtrace);
+ }
+}
+
+char* backtrace_get_proc_name(const backtrace_t* backtrace, uintptr_t pc,
+ uintptr_t* offset) {
+ if (backtrace->tid < 0) {
+ return local_get_proc_name(backtrace, pc, offset);
+ } else {
+ return remote_get_proc_name(backtrace, pc, offset);
+ }
+}