mirror of
https://github.com/KjellKod/g3log.git
synced 2024-12-12 18:30:25 +01:00
322 lines
11 KiB
C++
322 lines
11 KiB
C++
/** ==========================================================================
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* 2014 by KjellKod.cc. This is PUBLIC DOMAIN to use at your own risk and comes
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* with no warranties. This code is yours to share, use and modify with no
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* strings attached and no restrictions or obligations.
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*
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* For more information see g3log/LICENSE or refer refer to http://unlicense.org
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* ============================================================================*/
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#include <g3log/g3log.hpp>
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#include <g3log/logworker.hpp>
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#include <iostream>
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#include <cctype>
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#include <future>
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#include <vector>
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#include <string>
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#include <chrono>
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#include <thread>
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#include <exception>
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#ifndef _MSC_VER
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#define NOEXCEPT noexcept
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#else
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#define NOEXCEPT throw()
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#endif
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#ifdef CHANGE_G3LOG_DEBUG_TO_DBUG
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#undef DEBUG
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#define DEBUG DBUG
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#endif
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namespace
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{
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#if (defined(WIN32) || defined(_WIN32) || defined(__WIN32__))
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const std::string path_to_log_file = "./";
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#else
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const std::string path_to_log_file = "/tmp/";
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#endif
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void ToLower(std::string &str)
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{
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for (auto &character : str) {
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character = std::tolower(character);
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}
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}
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void RaiseSIGABRT() {
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raise(SIGABRT);
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LOG(DEBUG) << " trigger exit";
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LOG(WARNING) << "Expected to have died by now...";
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}
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void RaiseSIGFPE() {
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LOG(DEBUG) << " trigger exit";
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LOGF_IF(INFO, (false != true), "Exiting %s SIGFPE", "by");
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raise(SIGFPE);
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LOG(WARNING) << "Expected to have died by now...";
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}
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void RaiseSIGSEGV() {
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LOG(DEBUG) << " trigger exit";
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LOG(DEBUG) << "Exit by SIGSEGV";
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raise(SIGSEGV);
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LOG(WARNING) << "Expected to have died by now...";
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}
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void RaiseSIGILL() {
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LOG(DEBUG) << " trigger exit";
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LOGF(DEBUG, "Exit by %s", "SIGILL");
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raise(SIGILL);
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LOG(WARNING) << "Expected to have died by now...";
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}
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void RAiseSIGTERM() {
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LOG(DEBUG) << " trigger exit";
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LOGF_IF(INFO, (false != true), "Exiting %s SIGFPE", "by");
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raise(SIGTERM);
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LOG(WARNING) << "Expected to have died by now...";
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}
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int gShouldBeZero = 1;
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void DivisionByZero() {
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LOG(DEBUG) << " trigger exit Executing DivisionByZero: gShouldBeZero: " << gShouldBeZero;
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LOG(INFO) << "Division by zero is a big no-no";
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int value = 3;
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auto test = value / gShouldBeZero;
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LOG(WARNING) << "Expected to have died by now..., test value: " << test;
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}
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void IllegalPrintf() {
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LOG(DEBUG) << " trigger exit";
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LOG(DEBUG) << "Impending doom due to illeteracy";
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LOGF(INFO, "2nd attempt at ILLEGAL PRINTF_SYNTAX %d EXAMPLE. %s %s", "hello", 1);
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LOG(WARNING) << "Expected to have died by now...";
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}
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void OutOfBoundsArrayIndexing() {
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LOG(DEBUG) << " trigger exit";
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std::vector<int> v;
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v[0] = 5;
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LOG(WARNING) << "Expected to have died by now...";
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}
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void AccessViolation() {
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LOG(DEBUG) << " trigger exit";
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char *ptr = 0;
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LOG(INFO) << "Death by access violation is imminent";
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*ptr = 0;
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LOG(WARNING) << "Expected to have died by now...";
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}
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void NoExitFunction() {
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LOG(DEBUG) << " trigger exit";
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CHECK(false) << "This function should never be called";
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}
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void RaiseSIGABRTAndAccessViolation() {
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LOG(DEBUG) << " trigger exit";
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auto f1 = std::async(std::launch::async, &RaiseSIGABRT);
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auto f2 = std::async(std::launch::async, &AccessViolation);
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f1.wait();
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f2.wait();
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}
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using deathfunc = void (*) (void);
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void Death_x10000(deathfunc func, std::string funcname) NOEXCEPT {
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LOG(DEBUG) << " trigger exit";
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std::vector<std::future<void>> asyncs;
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asyncs.reserve(10000);
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for (auto idx = 0; idx < 10000; ++idx) {
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asyncs.push_back(std::async(std::launch::async, func));
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}
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for (const auto& a : asyncs) {
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a.wait();
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}
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std::cout << __FUNCTION__ << " unexpected result. Death by " << funcname << " did not crash and exit the system" << std::endl;
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}
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void Throw() NOEXCEPT {
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LOG(DEBUG) << " trigger exit";
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std::future<int> empty;
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empty.get();
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// --> thows future_error http://en.cppreference.com/w/cpp/thread/future_error
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// example of std::exceptions can be found here: http://en.cppreference.com/w/cpp/error/exception
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}
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void SegFaultAttempt_x10000() NOEXCEPT {
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deathfunc f = []{char* ptr = 0; *ptr = 1; };
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Death_x10000(f, "throw uncaught exception... and then some sigsegv calls");
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}
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void AccessViolation_x10000() {
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Death_x10000(&AccessViolation, "AccessViolation");
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}
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void FailedCHECK() {
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LOG(DEBUG) << " trigger exit";
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CHECK(false) << "This is fatal";
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}
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void CallActualExitFunction(std::function<void()> fatal_function) {
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fatal_function();
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}
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void CallExitFunction(std::function<void()> fatal_function) {
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CallActualExitFunction(fatal_function);
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}
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void ExecuteDeathFunction(const bool runInNewThread, int fatalChoice) {
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LOG(DEBUG) << "trigger exit";
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auto exitFunction = &NoExitFunction;
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switch (fatalChoice) {
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case 1: exitFunction = &RaiseSIGABRT; break;
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case 2: exitFunction = &RaiseSIGFPE; break;
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case 3: exitFunction = &RaiseSIGSEGV; break;
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case 4: exitFunction = &RaiseSIGILL; break;
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case 5: exitFunction = &RAiseSIGTERM; break;
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case 6: exitFunction = &DivisionByZero; gShouldBeZero = 0; DivisionByZero(); break;
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case 7: exitFunction = &IllegalPrintf; break;
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case 8: exitFunction = &OutOfBoundsArrayIndexing; break;
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case 9: exitFunction = &AccessViolation; break;
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case 10: exitFunction = &RaiseSIGABRTAndAccessViolation; break;
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case 11: exitFunction = &Throw; break;
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case 12: exitFunction = &FailedCHECK; break;
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case 13: exitFunction = &AccessViolation_x10000; break;
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case 14: exitFunction = &SegFaultAttempt_x10000; break;
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default: break;
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}
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if (runInNewThread) {
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auto dieInNearFuture = std::async(std::launch::async, CallExitFunction, exitFunction);
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dieInNearFuture.wait();
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} else {
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CallExitFunction(exitFunction);
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}
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std::string unexpected = "Expected to exit by FATAL event. That did not happen (printf choice in Windows?).";
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unexpected.append("Choice was: ").append(std::to_string(fatalChoice)).append(", async?: ")
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.append(std::to_string(runInNewThread)).append("\n\n***** TEST WILL RUN AGAIN *****\n\n");
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std::cerr << unexpected << std::endl;
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LOG(WARNING) << unexpected;
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}
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bool AskForAsyncDeath() {
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std::string option;
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while (true) {
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option.clear();
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std::cout << "Do you want to run the test in a separate thread? [yes/no]" << std::endl;
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std::getline(std::cin, option);
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ToLower(option);
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if (("yes" != option) && ("no" != option)) {
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std::cout << "\nInvalid value: [" << option << "]\n\n\n";
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} else {
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break;
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}
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}
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return ("yes" == option);
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}
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int ChoiceOfFatalExit() {
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std::string option;
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int choice = {0};
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while (true) {
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std::cout << "\n\n\n\nChoose your exit" << std::endl;
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std::cout << "By throwing an fatal signal" << std::endl;
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std::cout << "or By executing a fatal code snippet" << std::endl;
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std::cout << "[1] Signal SIGABRT" << std::endl;
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std::cout << "[2] Signal SIGFPE" << std::endl;
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std::cout << "[3] Signal SIGSEGV" << std::endl;
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std::cout << "[4] Signal IGILL" << std::endl;
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std::cout << "[5] Signal SIGTERM" << std::endl;
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std::cout << "[6] Division By Zero" << std::endl;
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std::cout << "[7] Illegal printf" << std::endl;
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std::cout << "[8] Out of bounds array indexing " << std::endl;
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std::cout << "[9] Access violation" << std::endl;
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std::cout << "[10] Rasing SIGABRT + Access Violation in two separate threads" << std::endl;
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std::cout << "[11] Throw a std::future_error" << std::endl;
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std::cout << "[12] Just CHECK(false) (in this thread)" << std::endl;
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std::cout << "[13] 10,000 Continious crashes with out of bounds array indexing" << std::endl;
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std::cout << "[14] 10,000 Continious crashes with segmentation fault attempts" << std::endl;
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std::cout << std::flush;
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try {
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std::getline(std::cin, option);
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choice = std::stoi(option);
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if (choice <= 0 || choice > 14) {
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std::cout << "Invalid choice: [" << option << "\n\n";
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} else {
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return choice;
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}
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} catch (...) {
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std::cout << "Invalid choice: [" << option << "\n\n";
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}
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}
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}
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void ForwardChoiceForFatalExit(bool runInNewThread, int fatalChoice) {
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ExecuteDeathFunction(runInNewThread, fatalChoice);
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}
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void ChooseFatalExit() {
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const bool runInNewThread = AskForAsyncDeath();
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const int exitChoice = ChoiceOfFatalExit();
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ForwardChoiceForFatalExit(runInNewThread, exitChoice);
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}
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} // namespace
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void breakHere() {
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std::ostringstream oss;
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oss << "Fatal hook function: " << __FUNCTION__ << ":" << __LINE__ << " was called";
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oss << " through g3::setFatalPreLoggingHook(). setFatalPreLoggingHook should be called AFTER g3::initializeLogging()" << std::endl;
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LOG(DEBUG) << oss.str();
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#if (defined(WIN32) || defined(_WIN32) || defined(__WIN32__))
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__debugbreak();
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#endif
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}
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int main(int argc, char **argv)
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{
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auto worker = g3::LogWorker::createLogWorker();
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auto handle= worker->addDefaultLogger(argv[0], path_to_log_file);
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g3::initializeLogging(worker.get());
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g3::setFatalPreLoggingHook(&breakHere);
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std::future<std::string> log_file_name = handle->call(&g3::FileSink::fileName);
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std::cout << "**** G3LOG FATAL EXAMPLE ***\n\n"
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<< "Choose your type of fatal exit, then "
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<< " read the generated log and backtrace.\n"
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<< "The logfile is generated at: [" << log_file_name.get() << "]\n\n" << std::endl;
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LOGF(DEBUG, "Fatal exit example starts now, it's as easy as %d", 123);
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LOG(INFO) << "Feel free to read the source code also in g3log/example/main_fatal_choice.cpp";
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while (true) {
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ChooseFatalExit();
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}
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LOG(WARNING) << "Expected to exit by fatal event, this code line should never be reached";
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CHECK(false) << "Forced death";
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return 0;
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}
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