Rewrite libbacktrace using C++.
The old code was essentially trying to be C++ in C and was awkward. This
change makes it all objects with a thin layer that C code can use.
There is a C++ backtrace object that is not very useful, this code will
replace it.
This change also includes moving the backtrace test to a gtest, and adding
coverage of all major functionality.
Bug: 8410085
Change-Id: Iae0f1b09b3dd60395f71ed66010c1ea5cdd37841
diff --git a/libbacktrace/Corkscrew.h b/libbacktrace/Corkscrew.h
new file mode 100644
index 0000000..7cb125c
--- /dev/null
+++ b/libbacktrace/Corkscrew.h
@@ -0,0 +1,74 @@
+/*
+ * 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.
+ */
+
+#ifndef _LIBBACKTRACE_CORKSCREW_H
+#define _LIBBACKTRACE_CORKSCREW_H
+
+#include <inttypes.h>
+
+#include <string>
+
+#include <backtrace/backtrace.h>
+#include <backtrace/Backtrace.h>
+
+#include <corkscrew/backtrace.h>
+
+#include "Backtrace.h"
+#include "BacktraceThread.h"
+
+class CorkscrewCommon : public BacktraceImpl {
+public:
+ bool GenerateFrameData(backtrace_frame_t* cork_frames, ssize_t num_frames);
+};
+
+class CorkscrewCurrent : public CorkscrewCommon {
+public:
+ CorkscrewCurrent();
+ virtual ~CorkscrewCurrent();
+
+ virtual bool Unwind(size_t num_ignore_threads);
+
+ virtual std::string GetFunctionNameRaw(uintptr_t pc, uintptr_t* offset);
+};
+
+class CorkscrewThread : public CorkscrewCurrent, public BacktraceThreadInterface {
+public:
+ CorkscrewThread();
+ virtual ~CorkscrewThread();
+
+ virtual bool Init();
+
+ virtual void ThreadUnwind(
+ siginfo_t* siginfo, void* sigcontext, size_t num_ignore_frames);
+
+private:
+ map_info_t* corkscrew_map_info_;
+};
+
+class CorkscrewPtrace : public CorkscrewCommon {
+public:
+ CorkscrewPtrace();
+ virtual ~CorkscrewPtrace();
+
+ virtual std::string GetFunctionNameRaw(uintptr_t pc, uintptr_t* offset);
+
+ virtual bool Unwind(size_t num_ignore_threads);
+
+private:
+ ptrace_context_t* ptrace_context_;
+};
+
+#endif // _LIBBACKTRACE_CORKSCREW_H