93bdd6ae3a
This adds a new option backtrace_full, when it is set, then it will use libunwindstack. Modify the dump to file data to dump the extra information from libunwindstack. Along with the new dump file format, change the version to v1.1. Updated document for new format of file data. Add unit tests for the new functionality. Bug: 74361929 Test: Ran unit tests. Change-Id: I40fff795f5346bba7b9d7fde2e04f269ff4eb7f1
111 lines
3.6 KiB
C++
111 lines
3.6 KiB
C++
/*
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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 <demangle.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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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 += " (" + demangle(info->function_name.c_str());
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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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