1 files changed, 197 insertions, 0 deletions

diff --git a/src/main.cpp b/src/main.cpp
new file mode 100644
index 000000000..1f6aad24f
--- /dev/null
+++ b/src/main.cpp
@@ -0,0 +1,197 @@
+
+#include "Globals.h"  // NOTE: MSVC stupidness requires this to be the same across all modules
+
+#include "Root.h"
+
+#include <exception> //std::exception
+#include <csignal>   //std::signal
+#include <stdlib.h>  //exit()
+
+#ifdef _MSC_VER
+	#include <dbghelp.h>
+#endif  // _MSC_VER
+
+
+
+
+
+/// If defined, a thorough leak finder will be used (debug MSVC only); leaks will be output to the Output window
+#define ENABLE_LEAK_FINDER
+
+
+
+
+
+#if defined(_MSC_VER) && defined(_DEBUG) && defined(ENABLE_LEAK_FINDER)
+	#pragma warning(push)
+	#pragma warning(disable:4100)
+	#include "LeakFinder.h"
+	#pragma warning(pop)
+#endif
+
+
+
+
+
+
+void ShowCrashReport(int) 
+{
+	std::signal(SIGSEGV, SIG_DFL);
+
+	printf("\n\nMCServer has crashed!\n");
+
+	exit(-1);
+}
+
+
+
+
+
+#if defined(_WIN32) && !defined(_WIN64) && defined(_MSC_VER)
+///////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
+// Windows 32-bit stuff: when the server crashes, create a "dump file" containing the callstack of each thread and some variables; let the user send us that crash file for analysis
+
+typedef BOOL  (WINAPI *pMiniDumpWriteDump)(
+	HANDLE hProcess,
+	DWORD ProcessId,
+	HANDLE hFile,
+	MINIDUMP_TYPE DumpType,
+	PMINIDUMP_EXCEPTION_INFORMATION ExceptionParam,
+	PMINIDUMP_USER_STREAM_INFORMATION UserStreamParam,
+	PMINIDUMP_CALLBACK_INFORMATION CallbackParam
+);
+
+pMiniDumpWriteDump g_WriteMiniDump;  // The function in dbghlp DLL that creates dump files
+
+char g_DumpFileName[MAX_PATH];  // Filename of the dump file; hes to be created before the dump handler kicks in
+char g_ExceptionStack[128 * 1024];  // Substitute stack, just in case the handler kicks in because of "insufficient stack space"
+MINIDUMP_TYPE g_DumpFlags = MiniDumpNormal;  // By default dump only the stack and some helpers
+
+
+
+
+
+/** This function gets called just before the "program executed an illegal instruction and will be terminated" or similar.
+Its purpose is to create the crashdump using the dbghlp DLLs
+*/
+LONG WINAPI LastChanceExceptionFilter(__in struct _EXCEPTION_POINTERS * a_ExceptionInfo)
+{
+	char * newStack = &g_ExceptionStack[sizeof(g_ExceptionStack)];
+	char * oldStack;
+
+	// Use the substitute stack:
+	// This code is the reason why we don't support 64-bit (yet)
+	_asm
+	{
+		mov oldStack, esp
+		mov esp, newStack
+	}
+
+	MINIDUMP_EXCEPTION_INFORMATION  ExcInformation;
+	ExcInformation.ThreadId = GetCurrentThreadId();
+	ExcInformation.ExceptionPointers = a_ExceptionInfo;
+	ExcInformation.ClientPointers = 0;
+
+	// Write the dump file:
+	HANDLE dumpFile = CreateFile(g_DumpFileName, GENERIC_WRITE, 0, NULL, CREATE_ALWAYS, FILE_ATTRIBUTE_NORMAL, NULL);
+	g_WriteMiniDump(GetCurrentProcess(), GetCurrentProcessId(), dumpFile, g_DumpFlags, (a_ExceptionInfo) ? &ExcInformation : NULL, NULL, NULL);
+	CloseHandle(dumpFile);
+
+	// Revert to old stack:
+	_asm
+	{
+		mov esp, oldStack
+	}
+
+	return 0;
+}
+
+#endif  // _WIN32 && !_WIN64
+
+
+
+
+///////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
+// main:
+
+int main( int argc, char **argv )
+{
+	(void)argc;
+	(void)argv;
+	
+	#if defined(_MSC_VER) && defined(_DEBUG) && defined(ENABLE_LEAK_FINDER)
+	InitLeakFinder();
+	#endif
+	
+	// Magic code to produce dump-files on Windows if the server crashes:
+	#if defined(_WIN32) && !defined(_WIN64) && defined(_MSC_VER)
+	HINSTANCE hDbgHelp = LoadLibrary("DBGHELP.DLL");
+	g_WriteMiniDump = (pMiniDumpWriteDump)GetProcAddress(hDbgHelp, "MiniDumpWriteDump");
+	if (g_WriteMiniDump != NULL)
+	{
+		_snprintf_s(g_DumpFileName, ARRAYCOUNT(g_DumpFileName), _TRUNCATE, "crash_mcs_%x.dmp", GetCurrentProcessId());
+		SetUnhandledExceptionFilter(LastChanceExceptionFilter);
+		
+		// Parse arguments for minidump flags:
+		for (int i = 0; i < argc; i++)
+		{
+			if (_stricmp(argv[i], "/cdg") == 0)
+			{
+				// Add globals to the dump
+				g_DumpFlags = (MINIDUMP_TYPE)(g_DumpFlags | MiniDumpWithDataSegs);
+			}
+			else if (_stricmp(argv[i], "/cdf") == 0)
+			{
+				// Add full memory to the dump (HUUUGE file)
+				g_DumpFlags = (MINIDUMP_TYPE)(g_DumpFlags | MiniDumpWithFullMemory);
+			}
+		}  // for i - argv[]
+	}
+	#endif  // _WIN32 && !_WIN64
+	// End of dump-file magic
+	
+	#if defined(_DEBUG) && defined(_MSC_VER)
+	_CrtSetDbgFlag ( _CRTDBG_ALLOC_MEM_DF | _CRTDBG_LEAK_CHECK_DF );
+	
+	// _X: The simple built-in CRT leak finder - simply break when allocating the Nth block ({N} is listed in the leak output)
+	// Only useful when the leak is in the same sequence all the time
+	// _CrtSetBreakAlloc(85950);
+	
+	#endif  // _DEBUG && _MSC_VER
+
+	#ifndef _DEBUG
+	std::signal(SIGSEGV, ShowCrashReport);
+	#endif
+
+	// DEBUG: test the dumpfile creation:
+	// *((int *)0) = 0;
+	
+	#if !defined(ANDROID_NDK)
+	try
+	#endif
+	{
+		cRoot Root;	
+		Root.Start();
+	}
+	#if !defined(ANDROID_NDK)
+	catch( std::exception& e )
+	{
+		LOGERROR("Standard exception: %s", e.what() );
+	}
+	catch( ... )
+	{
+		LOGERROR("Unknown exception!");
+	}
+	#endif
+
+
+	#if defined(_MSC_VER) && defined(_DEBUG) && defined(ENABLE_LEAK_FINDER)
+	DeinitLeakFinder();
+	#endif
+	
+	return 0;
+}
+
+
+
+