59 lines
2.6 KiB
C++
59 lines
2.6 KiB
C++
// Copyright 2022 The Chromium Authors
|
|
// Use of this source code is governed by a BSD-style license that can be
|
|
// found in the LICENSE file.
|
|
|
|
#ifndef BASE_PROFILER_LIBUNWINDSTACK_UNWINDER_ANDROID_H_
|
|
#define BASE_PROFILER_LIBUNWINDSTACK_UNWINDER_ANDROID_H_
|
|
|
|
#include <memory>
|
|
#include <vector>
|
|
|
|
#include "base/profiler/native_unwinder_android_memory_regions_map.h"
|
|
#include "base/profiler/unwinder.h"
|
|
#include "third_party/libunwindstack/src/libunwindstack/include/unwindstack/DexFiles.h"
|
|
#include "third_party/libunwindstack/src/libunwindstack/include/unwindstack/JitDebug.h"
|
|
#include "third_party/libunwindstack/src/libunwindstack/include/unwindstack/Memory.h"
|
|
|
|
namespace base {
|
|
// This unwinder uses the libunwindstack::Unwinder internally to provide the
|
|
// base::Unwinder implementation. This is in contrast to
|
|
// base::NativeUnwinderAndroid, which uses functions from libunwindstack
|
|
// selectively to provide a subset of libunwindstack::Unwinder features. This
|
|
// causes some divergences from other base::Unwinder (this unwinder either fully
|
|
// succeeds or fully fails). A good source for a compariative unwinder would be
|
|
// traced_perf or heapprofd on android which uses the same API.
|
|
class LibunwindstackUnwinderAndroid : public Unwinder {
|
|
public:
|
|
LibunwindstackUnwinderAndroid();
|
|
~LibunwindstackUnwinderAndroid() override;
|
|
|
|
LibunwindstackUnwinderAndroid(const LibunwindstackUnwinderAndroid&) = delete;
|
|
LibunwindstackUnwinderAndroid& operator=(
|
|
const LibunwindstackUnwinderAndroid&) = delete;
|
|
|
|
// Unwinder
|
|
void InitializeModules() override;
|
|
bool CanUnwindFrom(const Frame& current_frame) const override;
|
|
UnwindResult TryUnwind(RegisterContext* thread_context,
|
|
uintptr_t stack_top,
|
|
std::vector<Frame>* stack) override;
|
|
|
|
private:
|
|
unwindstack::JitDebug* GetOrCreateJitDebug(unwindstack::ArchEnum arch);
|
|
unwindstack::DexFiles* GetOrCreateDexFiles(unwindstack::ArchEnum arch);
|
|
|
|
std::unique_ptr<NativeUnwinderAndroidMemoryRegionsMap> memory_regions_map_;
|
|
// libunwindstack::Unwinder requires that process_memory be provided as a
|
|
// std::shared_ptr. Since this is a third_party library this exception to
|
|
// normal Chromium conventions of not using shared_ptr has to exist here.
|
|
std::shared_ptr<unwindstack::Memory> process_memory_;
|
|
|
|
std::unique_ptr<unwindstack::JitDebug> jit_debug_;
|
|
std::unique_ptr<unwindstack::DexFiles> dex_files_;
|
|
// Libraries where to search for dex and jit descriptors.
|
|
const std::vector<std::string> search_libs_ = {"libart.so", "libartd.so"};
|
|
};
|
|
} // namespace base
|
|
|
|
#endif // BASE_PROFILER_LIBUNWINDSTACK_UNWINDER_ANDROID_H_
|