// Copyright 2019 Fuzhou Rockchip Electronics Co., Ltd. All rights reserved.
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// Use of this source code is governed by a BSD-style license that can be
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// found in the LICENSE file.
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#include "minilogger/backtrace.h"
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#include "minilogger/log.h"
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#ifdef __cplusplus
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#include <cxxabi.h>
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#endif
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#include <dlfcn.h>
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#include <glib.h>
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#include <limits.h>
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#include <signal.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <unistd.h>
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#ifdef USE_LIBUNWIND
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#define UNW_LOCAL_ONLY
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#include <libunwind.h>
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#ifndef __USE_GNU
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#define __USE_GNU
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#endif
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#include <ucontext.h>
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#else
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#include <libgen.h>
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#include <execinfo.h>
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#endif
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void show_backtrace(void) {
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#ifdef USE_LIBUNWIND
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unw_cursor_t cursor;
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unw_context_t uc;
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unw_word_t ip, sp;
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char func_name_cache[4096];
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func_name_cache[sizeof(func_name_cache) - 1] = 0;
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unw_word_t unw_offset;
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unw_proc_info_t unw_proc;
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int frame_id = 0;
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#ifdef __cplusplus
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int status;
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#endif
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unw_getcontext(&uc);
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unw_init_local(&cursor, &uc);
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minilog_error("++++++++ backtrace ++++++++");
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while (unw_step(&cursor) > 0) {
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unw_get_reg(&cursor, UNW_REG_IP, &ip);
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unw_get_reg(&cursor, UNW_REG_SP, &sp);
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unw_get_proc_info(&cursor, &unw_proc);
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unw_get_proc_name(&cursor, func_name_cache, sizeof(func_name_cache) - 1,
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&unw_offset);
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#ifdef __cplusplus
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char *func_name = abi::__cxa_demangle(func_name_cache, 0, 0, &status);
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#else
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const char *func_name = func_name_cache;
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#endif
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minilog_error("Frame #%02d: (%s+0x%llx) [0x%llx]\r\n", frame_id,
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func_name ? func_name : func_name_cache,
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static_cast<unsigned long long>(unw_offset),
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static_cast<unsigned long long>(unw_proc.start_ip));
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#ifdef __cplusplus
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if (func_name)
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free((void *)func_name);
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#endif
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frame_id++;
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}
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minilog_error("+++++++++++++++++++++++++++");
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#else
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#define SIZE 100
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int nptrs;
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void *buffer[SIZE];
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char **strings;
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nptrs = backtrace(buffer, SIZE);
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strings = backtrace_symbols(buffer, nptrs);
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if (strings == NULL) {
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perror("backtrace_symbols");
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exit(EXIT_FAILURE);
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}
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for (int j = 0; j < nptrs; j++) {
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minilog_error("%s\n", strings[j]);
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}
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free(strings);
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#endif
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}
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