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120 lines
3.8 KiB
120 lines
3.8 KiB
/*
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* Copyright (C) 2018 The Android Open Source Project
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* * Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* * Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in
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* the documentation and/or other materials provided with the
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* distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
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* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
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* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
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* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
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* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
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* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
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* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
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* OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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#include <inttypes.h>
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#include <pthread.h>
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#include <stdint.h>
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#include <algorithm>
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#include <memory>
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#include <string>
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#include <vector>
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#include <android-base/stringprintf.h>
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#include <unwindstack/LocalUnwinder.h>
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#include <unwindstack/MapInfo.h>
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#include "UnwindBacktrace.h"
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#include "debug_log.h"
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#if defined(__LP64__)
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#define PAD_PTR "016" PRIx64
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#else
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#define PAD_PTR "08" PRIx64
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#endif
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extern "C" char* __cxa_demangle(const char*, char*, size_t*, int*);
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static pthread_once_t g_setup_once = PTHREAD_ONCE_INIT;
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static unwindstack::LocalUnwinder* g_unwinder;
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static void Setup() {
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#if defined(__LP64__)
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std::vector<std::string> skip_libraries{"/system/lib64/libunwindstack.so", "/system/lib64/libc_malloc_debug.so"};
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#else
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std::vector<std::string> skip_libraries{"/system/lib/libunwindstack.so", "/system/lib/libc_malloc_debug.so"};
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#endif
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g_unwinder = new unwindstack::LocalUnwinder(skip_libraries);
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g_unwinder->Init();
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}
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bool Unwind(std::vector<uintptr_t>* frames, std::vector<unwindstack::LocalFrameData>* frame_info, size_t max_frames) {
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pthread_once(&g_setup_once, Setup);
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if (g_unwinder == nullptr) {
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return false;
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}
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if (!g_unwinder->Unwind(frame_info, max_frames)) {
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frames->clear();
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frame_info->clear();
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return false;
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}
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for (const auto& frame : *frame_info) {
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frames->push_back(frame.pc);
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}
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return true;
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}
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void UnwindLog(const std::vector<unwindstack::LocalFrameData>& frame_info) {
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for (size_t i = 0; i < frame_info.size(); i++) {
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const unwindstack::LocalFrameData* info = &frame_info[i];
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unwindstack::MapInfo* map_info = info->map_info;
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std::string line = android::base::StringPrintf(" #%0zd pc %" PAD_PTR " ", i, info->rel_pc);
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if (map_info->offset() != 0) {
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line += android::base::StringPrintf("(offset 0x%" PRIx64 ") ", map_info->offset());
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}
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if (map_info->name().empty()) {
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line += android::base::StringPrintf("<anonymous:%" PRIx64 ">", map_info->start());
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} else {
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line += map_info->name();
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}
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if (!info->function_name.empty()) {
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line += " (";
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char* demangled_name = __cxa_demangle(info->function_name.c_str(), nullptr, nullptr, nullptr);
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if (demangled_name != nullptr) {
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line += demangled_name;
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free(demangled_name);
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} else {
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line += info->function_name;
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}
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if (info->function_offset != 0) {
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line += "+" + std::to_string(info->function_offset);
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}
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line += ")";
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}
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error_log_string(line.c_str());
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}
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}
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