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125 lines
3.7 KiB
C++
125 lines
3.7 KiB
C++
/*
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* Copyright (c) 2018-2020, Andreas Kling <andreas@ladybird.org>
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*
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* SPDX-License-Identifier: BSD-2-Clause
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*/
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#include <AK/Assertions.h>
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#include <AK/Backtrace.h>
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#include <AK/Format.h>
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#include <AK/Platform.h>
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#include <AK/StringBuilder.h>
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#include <AK/StringView.h>
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#if defined(AK_OS_ANDROID) && (__ANDROID_API__ >= 33)
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# include <android/log.h>
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# define EXECINFO_BACKTRACE
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# define PRINT_ERROR(s) __android_log_write(ANDROID_LOG_WARN, "AK", (s))
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#else
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# define PRINT_ERROR(s) (void)fputs((s), stderr)
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#endif
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#if defined(AK_HAS_BACKTRACE_HEADER)
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# include <cxxabi.h>
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#endif
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#if defined(AK_OS_SERENITY)
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# define ERRORLN dbgln
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#else
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# define ERRORLN warnln
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#endif
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#if defined(AK_HAS_BACKTRACE_HEADER)
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namespace {
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ALWAYS_INLINE void dump_backtrace()
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{
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// Grab symbols and dso name for up to 256 frames
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void* trace[256] = {};
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int const num_frames = backtrace(trace, array_size(trace));
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char** syms = backtrace_symbols(trace, num_frames);
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for (auto i = 0; i < num_frames; ++i) {
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// If there is a C++ symbol name in the line of the backtrace, demangle it
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StringView sym(syms[i], strlen(syms[i]));
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StringBuilder error_builder;
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if (auto idx = sym.find("_Z"sv); idx.has_value()) {
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// Play C games with the original string so we can print before and after the mangled symbol with a C API
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// We don't want to call dbgln() here on substring StringView because we might VERIFY() within AK::Format
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syms[i][idx.value() - 1] = '\0';
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error_builder.append(syms[i], strlen(syms[i]));
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error_builder.append(' ');
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auto sym_substring = sym.substring_view(idx.value());
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auto end_of_sym = sym_substring.find_any_of("+ "sv).value_or(sym_substring.length() - 1);
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syms[i][idx.value() + end_of_sym] = '\0';
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size_t buf_size = 128u;
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char* buf = static_cast<char*>(malloc(buf_size));
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auto* raw_str = &syms[i][idx.value()];
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buf = abi::__cxa_demangle(raw_str, buf, &buf_size, nullptr);
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auto* buf_to_print = buf ? buf : raw_str;
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error_builder.append(buf_to_print, strlen(buf_to_print));
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free(buf);
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error_builder.append(' ');
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auto* end_of_line = &syms[i][idx.value() + end_of_sym + 1];
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error_builder.append(end_of_line, strlen(end_of_line));
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} else {
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error_builder.append(sym);
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}
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# if !defined(AK_OS_ANDROID)
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error_builder.append('\n');
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# endif
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error_builder.append('\0');
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PRINT_ERROR(error_builder.string_view().characters_without_null_termination());
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}
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free(syms);
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}
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}
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#endif
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extern "C" {
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void ak_verification_failed(char const* message)
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{
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#if defined(AK_OS_SERENITY) || defined(AK_OS_ANDROID)
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bool colorize_output = true;
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#elif defined(AK_OS_WINDOWS)
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bool colorize_output = false;
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#else
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bool colorize_output = isatty(STDERR_FILENO) == 1;
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#endif
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if (colorize_output)
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ERRORLN("\033[31;1mVERIFICATION FAILED\033[0m: {}", message);
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else
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ERRORLN("VERIFICATION FAILED: {}", message);
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#if defined(AK_HAS_BACKTRACE_HEADER)
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dump_backtrace();
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#endif
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__builtin_trap();
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}
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void ak_assertion_failed(char const* message)
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{
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#if defined(AK_OS_SERENITY) || defined(AK_OS_ANDROID)
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bool colorize_output = true;
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#elif defined(AK_OS_WINDOWS)
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bool colorize_output = false;
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#else
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bool colorize_output = isatty(STDERR_FILENO) == 1;
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#endif
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if (colorize_output)
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ERRORLN("\033[31;1mASSERTION FAILED\033[0m: {}", message);
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else
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ERRORLN("ASSERTION FAILED: {}", message);
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#if defined(AK_HAS_BACKTRACE_HEADER)
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dump_backtrace();
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#endif
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__builtin_trap();
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}
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}
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