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// ConsoleSignalHandler.h
// Intercepts signals for graceful CTRL-C (and others) handling.
// This file MUST NOT be included from anywhere other than main.cpp.
#include <csignal>
// Because SIG_DFL or SIG_IGN could be NULL instead of nullptr, we need to disable the Clang warning here:
#ifdef __clang__
#pragma clang diagnostic push
#pragma clang diagnostic ignored "-Wunknown-warning-option"
#pragma clang diagnostic ignored "-Wunknown-pragmas"
#pragma clang diagnostic ignored "-Wzero-as-null-pointer-constant"
#endif
static void NonCtrlHandler(int a_Signal)
{
LOGD("Terminate event raised from std::signal");
switch (a_Signal)
{
case SIGSEGV:
{
PrintStackTrace();
LOGERROR(
"Failure report: \n\n"
" :( | Cuberite has encountered an error and needs to close\n"
" | SIGSEGV: Segmentation fault\n"
" |\n"
#ifdef BUILD_ID
" | Cuberite " BUILD_SERIES_NAME " (id: " BUILD_ID ")\n"
" | from commit " BUILD_COMMIT_ID "\n"
#endif
);
std::signal(SIGSEGV, SIG_DFL);
return;
}
case SIGABRT:
#ifdef SIGABRT_COMPAT
case SIGABRT_COMPAT:
#endif
{
PrintStackTrace();
LOGERROR(
"Failure report: \n\n"
" :( | Cuberite has encountered an error and needs to close\n"
" | SIGABRT: Server self-terminated due to an internal fault\n"
" |\n"
#ifdef BUILD_ID
" | Cuberite " BUILD_SERIES_NAME " (id: " BUILD_ID ")\n"
" | from commit " BUILD_COMMIT_ID "\n"
#endif
);
std::signal(SIGSEGV, SIG_DFL);
return;
}
case SIGINT:
case SIGTERM:
{
// Server is shutting down, wait for it...
cRoot::Stop();
return;
}
}
}
#ifdef __clang__
#pragma clang diagnostic pop
#endif
#ifdef _WIN32
/** Handle CTRL events in windows, including console window close. */
static BOOL CtrlHandler(DWORD fdwCtrlType)
{
cRoot::Stop();
LOGD("Terminate event raised from the Windows CtrlHandler");
// Delay as much as possible to try to get the server to shut down cleanly - 10 seconds given by Windows:
std::this_thread::sleep_for(std::chrono::seconds(10));
// Returning from main() automatically aborts this handler thread.
return TRUE;
}
#endif
namespace ConsoleSignalHandler
{
static void Register()
{
std::signal(SIGSEGV, NonCtrlHandler);
std::signal(SIGTERM, NonCtrlHandler);
std::signal(SIGINT, NonCtrlHandler);
std::signal(SIGABRT, NonCtrlHandler);
#ifdef SIGABRT_COMPAT
std::signal(SIGABRT_COMPAT, NonCtrlHandler);
#endif
#ifdef SIGPIPE
std::signal(SIGPIPE, SIG_IGN); // Ignore (PR #2487).
#endif
#ifdef _WIN32
SetConsoleCtrlHandler(reinterpret_cast<PHANDLER_ROUTINE>(CtrlHandler), TRUE);
#endif
}
};
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