diff options
Diffstat (limited to 'platform/linuxbsd/crash_handler_linuxbsd.cpp')
| -rw-r--r-- | platform/linuxbsd/crash_handler_linuxbsd.cpp | 149 |
1 files changed, 149 insertions, 0 deletions
diff --git a/platform/linuxbsd/crash_handler_linuxbsd.cpp b/platform/linuxbsd/crash_handler_linuxbsd.cpp new file mode 100644 index 0000000000..1b3804e3ed --- /dev/null +++ b/platform/linuxbsd/crash_handler_linuxbsd.cpp @@ -0,0 +1,149 @@ +/*************************************************************************/ +/* crash_handler_linuxbsd.cpp */ +/*************************************************************************/ +/* This file is part of: */ +/* GODOT ENGINE */ +/* https://godotengine.org */ +/*************************************************************************/ +/* Copyright (c) 2007-2020 Juan Linietsky, Ariel Manzur. */ +/* Copyright (c) 2014-2020 Godot Engine contributors (cf. AUTHORS.md). */ +/* */ +/* Permission is hereby granted, free of charge, to any person obtaining */ +/* a copy of this software and associated documentation files (the */ +/* "Software"), to deal in the Software without restriction, including */ +/* without limitation the rights to use, copy, modify, merge, publish, */ +/* distribute, sublicense, and/or sell copies of the Software, and to */ +/* permit persons to whom the Software is furnished to do so, subject to */ +/* the following conditions: */ +/* */ +/* The above copyright notice and this permission notice shall be */ +/* included in all copies or substantial portions of the Software. */ +/* */ +/* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, */ +/* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF */ +/* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.*/ +/* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY */ +/* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, */ +/* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE */ +/* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. */ +/*************************************************************************/ + +#include "crash_handler_linuxbsd.h" + +#include "core/os/os.h" +#include "core/project_settings.h" +#include "main/main.h" + +#ifdef DEBUG_ENABLED +#define CRASH_HANDLER_ENABLED 1 +#endif + +#ifdef CRASH_HANDLER_ENABLED +#include <cxxabi.h> +#include <dlfcn.h> +#include <execinfo.h> +#include <signal.h> +#include <stdlib.h> + +static void handle_crash(int sig) { + if (OS::get_singleton() == NULL) { + abort(); + } + + void *bt_buffer[256]; + size_t size = backtrace(bt_buffer, 256); + String _execpath = OS::get_singleton()->get_executable_path(); + + String msg; + const ProjectSettings *proj_settings = ProjectSettings::get_singleton(); + if (proj_settings) { + msg = proj_settings->get("debug/settings/crash_handler/message"); + } + + // Dump the backtrace to stderr with a message to the user + fprintf(stderr, "%s: Program crashed with signal %d\n", __FUNCTION__, sig); + + if (OS::get_singleton()->get_main_loop()) + OS::get_singleton()->get_main_loop()->notification(MainLoop::NOTIFICATION_CRASH); + + fprintf(stderr, "Dumping the backtrace. %ls\n", msg.c_str()); + char **strings = backtrace_symbols(bt_buffer, size); + if (strings) { + for (size_t i = 1; i < size; i++) { + char fname[1024]; + Dl_info info; + + snprintf(fname, 1024, "%s", strings[i]); + + // Try to demangle the function name to provide a more readable one + if (dladdr(bt_buffer[i], &info) && info.dli_sname) { + if (info.dli_sname[0] == '_') { + int status; + char *demangled = abi::__cxa_demangle(info.dli_sname, NULL, 0, &status); + + if (status == 0 && demangled) { + snprintf(fname, 1024, "%s", demangled); + } + + if (demangled) + free(demangled); + } + } + + List<String> args; + + char str[1024]; + snprintf(str, 1024, "%p", bt_buffer[i]); + args.push_back(str); + args.push_back("-e"); + args.push_back(_execpath); + + String output = ""; + + // Try to get the file/line number using addr2line + int ret; + Error err = OS::get_singleton()->execute(String("addr2line"), args, true, NULL, &output, &ret); + if (err == OK) { + output.erase(output.length() - 1, 1); + } + + fprintf(stderr, "[%ld] %s (%ls)\n", (long int)i, fname, output.c_str()); + } + + free(strings); + } + fprintf(stderr, "-- END OF BACKTRACE --\n"); + + // Abort to pass the error to the OS + abort(); +} +#endif + +CrashHandler::CrashHandler() { + disabled = false; +} + +CrashHandler::~CrashHandler() { + disable(); +} + +void CrashHandler::disable() { + if (disabled) + return; + +#ifdef CRASH_HANDLER_ENABLED + signal(SIGSEGV, NULL); + signal(SIGFPE, NULL); + signal(SIGILL, NULL); +#endif + + disabled = true; +} + +void CrashHandler::initialize() { +#ifdef CRASH_HANDLER_ENABLED + signal(SIGSEGV, handle_crash); + signal(SIGFPE, handle_crash); + signal(SIGILL, handle_crash); +#endif +} |