From 1100b04b59b461f1a2cc3dfe7b53b5473daa7992 Mon Sep 17 00:00:00 2001
From: Tiger Wang <ziwei.tiger@outlook.com>
Date: Wed, 21 Apr 2021 16:07:48 +0100
Subject: Make Windows go brrrr, not tick. tick. tick. (#5201)

* Fixes #5140
---
 src/OSSupport/ConsoleSignalHandler.h | 130 +++++++++++++++++++++++++++++++++++
 1 file changed, 130 insertions(+)
 create mode 100644 src/OSSupport/ConsoleSignalHandler.h

(limited to 'src/OSSupport/ConsoleSignalHandler.h')

diff --git a/src/OSSupport/ConsoleSignalHandler.h b/src/OSSupport/ConsoleSignalHandler.h
new file mode 100644
index 000000000..23e63d555
--- /dev/null
+++ b/src/OSSupport/ConsoleSignalHandler.h
@@ -0,0 +1,130 @@
+
+// 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
+	}
+};
-- 
cgit v1.2.3