From 9e65d1402e03f941b7b18d085b132d55a28aecb3 Mon Sep 17 00:00:00 2001
From: Christopher Ferris <cferris@google.com>
Date: Fri, 7 Jan 2022 12:50:19 -0800
Subject: Remove the LocalUnwinder object.

This object is no longer needed, and is actually slower than
using the Unwinder object.

Bug: 120606663

Test: All unit tests pass.
Change-Id: I1b0e53b1f12fc5ac92c6b0e167ded5e906c7962d
---
 libunwindstack/include/unwindstack/LocalUnwinder.h | 86 ----------------------
 1 file changed, 86 deletions(-)
 delete mode 100644 libunwindstack/include/unwindstack/LocalUnwinder.h

(limited to 'libunwindstack/include/unwindstack/LocalUnwinder.h')

diff --git a/libunwindstack/include/unwindstack/LocalUnwinder.h b/libunwindstack/include/unwindstack/LocalUnwinder.h
deleted file mode 100644
index b3dbb4f..0000000
--- a/libunwindstack/include/unwindstack/LocalUnwinder.h
+++ /dev/null
@@ -1,86 +0,0 @@
-/*
- * Copyright (C) 2018 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 _LIBUNWINDSTACK_LOCAL_UNWINDER_H
-#define _LIBUNWINDSTACK_LOCAL_UNWINDER_H
-
-#include <pthread.h>
-#include <stdint.h>
-#include <sys/types.h>
-
-#include <memory>
-#include <string>
-#include <vector>
-
-#include <unwindstack/Error.h>
-#include <unwindstack/Maps.h>
-#include <unwindstack/Memory.h>
-
-namespace unwindstack {
-
-// Forward declarations.
-class Elf;
-class MapInfo;
-
-struct LocalFrameData {
-  LocalFrameData(std::shared_ptr<MapInfo>& map_info, uint64_t pc, uint64_t rel_pc,
-                 const std::string& function_name, uint64_t function_offset)
-      : map_info(map_info),
-        pc(pc),
-        rel_pc(rel_pc),
-        function_name(function_name),
-        function_offset(function_offset) {}
-
-  std::shared_ptr<MapInfo> map_info;
-  uint64_t pc;
-  uint64_t rel_pc;
-  std::string function_name;
-  uint64_t function_offset;
-};
-
-// This is a specialized class that should only be used for doing local unwinds.
-// The Unwind call can be made as multiple times on the same object, and it can
-// be called by multiple threads at the same time.
-// It is designed to be used in debugging circumstances to get a stack trace
-// as fast as possible.
-class LocalUnwinder {
- public:
-  LocalUnwinder() = default;
-  LocalUnwinder(const std::vector<std::string>& skip_libraries) : skip_libraries_(skip_libraries) {}
-  ~LocalUnwinder() = default;
-
-  bool Init();
-
-  bool Unwind(std::vector<LocalFrameData>* frame_info, size_t max_frames);
-
-  bool ShouldSkipLibrary(const std::string& map_name);
-
-  std::shared_ptr<MapInfo> GetMapInfo(uint64_t pc);
-
-  ErrorCode LastErrorCode() { return last_error_.code; }
-  uint64_t LastErrorAddress() { return last_error_.address; }
-
- private:
-  pthread_rwlock_t maps_rwlock_;
-  std::unique_ptr<LocalUpdatableMaps> maps_ = nullptr;
-  std::shared_ptr<Memory> process_memory_;
-  std::vector<std::string> skip_libraries_;
-  ErrorData last_error_;
-};
-
-}  // namespace unwindstack
-
-#endif  // _LIBUNWINDSTACK_LOCAL_UNWINDER_H
-- 
cgit v1.2.3