Create minidump on fatal Win32 exceptions
Remove software exception translator function, simplifying exception handler macros. FatalSystemExceptions are left unhandled.master
kwolekr
parent
48fa893abd
commit
43f102271d
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@ -128,6 +128,7 @@ add_definitions ( -DUSE_CMAKE_CONFIG_H )
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if(WIN32)
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# Windows
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if(MSVC) # MSVC Specifics
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set(PLATFORM_LIBS dbghelp.lib ${PLATFORM_LIBS})
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# Surpress some useless warnings
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add_definitions ( /D "_CRT_SECURE_NO_DEPRECATE" /W1 )
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else() # Probably MinGW = GCC
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@ -630,11 +631,11 @@ if(MSVC)
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#set(CMAKE_EXE_LINKER_FLAGS_RELEASE "/LTCG /NODEFAULTLIB:\"libcmtd.lib\" /NODEFAULTLIB:\"libcmt.lib\"")
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set(CMAKE_EXE_LINKER_FLAGS_RELEASE "/LTCG")
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set(CMAKE_CXX_FLAGS_SEMIDEBUG "/MDd /Zi /Ob0 /O1 /RTC1 /Wall")
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set(CMAKE_CXX_FLAGS_SEMIDEBUG "/MDd /Zi /Ob0 /O1 /RTC1")
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# Debug build doesn't catch exceptions by itself
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# Add some optimizations because otherwise it's VERY slow
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set(CMAKE_CXX_FLAGS_DEBUG "/MDd /Zi /Ob0 /Od /RTC1 /Wall")
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set(CMAKE_CXX_FLAGS_DEBUG "/MDd /Zi /Ob0 /Od /RTC1")
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# Flags for C files (sqlite)
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# /MT = Link statically with standard library stuff
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160
src/debug.cpp
160
src/debug.cpp
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@ -29,6 +29,13 @@ with this program; if not, write to the Free Software Foundation, Inc.,
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#include "jthread/jmutex.h"
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#include "jthread/jmutexautolock.h"
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#include "config.h"
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#ifdef _MSC_VER
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#include <dbghelp.h>
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#include "version.h"
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#include "filesys.h"
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#endif
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/*
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Debug output
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*/
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@ -57,7 +64,7 @@ void debugstreams_init(bool disable_stderr, const char *filename)
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if(filename)
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g_debugstreams[1] = fopen(filename, "a");
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if(g_debugstreams[1])
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{
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fprintf(g_debugstreams[1], "\n\n-------------\n");
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@ -91,7 +98,7 @@ public:
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//TODO: Is this slow?
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fflush(g_debugstreams[i]);
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}
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return c;
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}
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std::streamsize xsputn(const char *s, std::streamsize n)
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@ -111,7 +118,7 @@ public:
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return n;
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}
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private:
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bool m_disable_stderr;
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};
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@ -133,7 +140,7 @@ void assert_fail(const char *assertion, const char *file,
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"%s:%u: %s: Assertion '%s' failed.\n",
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(unsigned long)get_current_thread_id(),
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file, line, function, assertion);
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debug_stacks_print();
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if(g_debugstreams[1])
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@ -151,7 +158,7 @@ struct DebugStack
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DebugStack(threadid_t id);
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void print(FILE *file, bool everything);
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void print(std::ostream &os, bool everything);
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threadid_t threadid;
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char stack[DEBUG_STACK_SIZE][DEBUG_STACK_TEXT_SIZE];
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int stack_i; // Points to the lowest empty position
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@ -285,10 +292,10 @@ DebugStacker::DebugStacker(const char *text)
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DebugStacker::~DebugStacker()
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{
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JMutexAutoLock lock(g_debug_stacks_mutex);
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if(m_overflowed == true)
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return;
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m_stack->stack_i--;
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if(m_stack->stack_i == 0)
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@ -301,35 +308,124 @@ DebugStacker::~DebugStacker()
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}
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}
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#ifdef _MSC_VER
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#if CATCH_UNHANDLED_EXCEPTIONS == 1
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void se_trans_func(unsigned int u, EXCEPTION_POINTERS* pExp)
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const char *Win32ExceptionCodeToString(DWORD exception_code)
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{
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dstream<<"In trans_func.\n";
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if(u == EXCEPTION_ACCESS_VIOLATION)
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{
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PEXCEPTION_RECORD r = pExp->ExceptionRecord;
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dstream<<"Access violation at "<<r->ExceptionAddress
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<<" write?="<<r->ExceptionInformation[0]
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<<" address="<<r->ExceptionInformation[1]
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<<std::endl;
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throw FatalSystemException
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("Access violation");
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}
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if(u == EXCEPTION_STACK_OVERFLOW)
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{
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throw FatalSystemException
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("Stack overflow");
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}
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if(u == EXCEPTION_ILLEGAL_INSTRUCTION)
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{
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throw FatalSystemException
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("Illegal instruction");
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switch (exception_code) {
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case EXCEPTION_ACCESS_VIOLATION:
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return "Access violation";
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case EXCEPTION_DATATYPE_MISALIGNMENT:
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return "Misaligned data access";
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case EXCEPTION_BREAKPOINT:
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return "Breakpoint reached";
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case EXCEPTION_SINGLE_STEP:
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return "Single debug step";
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case EXCEPTION_ARRAY_BOUNDS_EXCEEDED:
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return "Array access out of bounds";
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case EXCEPTION_FLT_DENORMAL_OPERAND:
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return "Denormal floating point operand";
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case EXCEPTION_FLT_DIVIDE_BY_ZERO:
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return "Floating point division by zero";
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case EXCEPTION_FLT_INEXACT_RESULT:
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return "Inaccurate floating point result";
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case EXCEPTION_FLT_INVALID_OPERATION:
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return "Invalid floating point operation";
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case EXCEPTION_FLT_OVERFLOW:
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return "Floating point exponent overflow";
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case EXCEPTION_FLT_STACK_CHECK:
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return "Floating point stack overflow or underflow";
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case EXCEPTION_FLT_UNDERFLOW:
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return "Floating point exponent underflow";
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case EXCEPTION_INT_DIVIDE_BY_ZERO:
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return "Integer division by zero";
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case EXCEPTION_INT_OVERFLOW:
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return "Integer overflow";
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case EXCEPTION_PRIV_INSTRUCTION:
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return "Privileged instruction executed";
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case EXCEPTION_IN_PAGE_ERROR:
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return "Could not access or load page";
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case EXCEPTION_ILLEGAL_INSTRUCTION:
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return "Illegal instruction encountered";
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case EXCEPTION_NONCONTINUABLE_EXCEPTION:
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return "Attempted to continue after fatal exception";
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case EXCEPTION_STACK_OVERFLOW:
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return "Stack overflow";
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case EXCEPTION_INVALID_DISPOSITION:
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return "Invalid disposition returned to the exception dispatcher";
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case EXCEPTION_GUARD_PAGE:
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return "Attempted guard page access";
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case EXCEPTION_INVALID_HANDLE:
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return "Invalid handle";
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}
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return "Unknown exception";
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}
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#endif
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long WINAPI Win32ExceptionHandler(struct _EXCEPTION_POINTERS *pExceptInfo)
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{
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char buf[512];
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MINIDUMP_EXCEPTION_INFORMATION mdei;
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MINIDUMP_USER_STREAM_INFORMATION mdusi;
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MINIDUMP_USER_STREAM mdus;
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bool minidump_created = false;
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std::string version_str("Minetest ");
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std::string dumpfile = porting::path_user + DIR_DELIM "minetest.dmp";
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HANDLE hFile = CreateFileA(dumpfile.c_str(), GENERIC_WRITE,
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FILE_SHARE_WRITE, NULL, CREATE_ALWAYS, FILE_ATTRIBUTE_NORMAL, NULL);
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if (hFile == INVALID_HANDLE_VALUE)
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goto minidump_failed;
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if (SetEndOfFile(hFile) == FALSE)
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goto minidump_failed;
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mdei.ClientPointers = NULL;
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mdei.ExceptionPointers = pExceptInfo;
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mdei.ThreadId = GetCurrentThreadId();
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version_str += minetest_version_hash;
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mdus.Type = CommentStreamA;
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mdus.BufferSize = version_str.size();
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mdus.Buffer = (PVOID)version_str.c_str();
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mdusi.UserStreamArray = &mdus;
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mdusi.UserStreamCount = 1;
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if (MiniDumpWriteDump(GetCurrentProcess(), GetCurrentProcessId(), hFile,
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MiniDumpNormal, &mdei, &mdusi, NULL) == FALSE)
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goto minidump_failed;
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minidump_created = true;
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minidump_failed:
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CloseHandle(hFile);
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DWORD excode = pExceptInfo->ExceptionRecord->ExceptionCode;
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_snprintf(buf, sizeof(buf),
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" >> === FATAL ERROR ===\n"
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" >> %s (Exception 0x%08X) at 0x%p\n",
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Win32ExceptionCodeToString(excode), excode,
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pExceptInfo->ExceptionRecord->ExceptionAddress);
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dstream << buf;
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if (minidump_created)
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dstream << " >> Saved dump to " << dumpfile << std::endl;
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else
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dstream << " >> Failed to save dump" << std::endl;
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return EXCEPTION_EXECUTE_HANDLER;
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}
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#endif
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void debug_set_exception_handler()
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{
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#ifdef _MSC_VER
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SetUnhandledExceptionFilter(Win32ExceptionHandler);
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#endif
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}
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44
src/debug.h
44
src/debug.h
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@ -95,6 +95,8 @@ __NORETURN extern void assert_fail(
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#define assert(expr) ASSERT(expr)
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void debug_set_exception_handler();
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/*
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DebugStack
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*/
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@ -118,13 +120,12 @@ private:
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bool m_overflowed;
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};
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#define DSTACK(msg)\
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#define DSTACK(msg) \
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DebugStacker __debug_stacker(msg);
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#define DSTACKF(...)\
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char __buf[DEBUG_STACK_TEXT_SIZE];\
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snprintf(__buf,\
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DEBUG_STACK_TEXT_SIZE, __VA_ARGS__);\
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#define DSTACKF(...) \
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char __buf[DEBUG_STACK_TEXT_SIZE]; \
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snprintf(__buf, DEBUG_STACK_TEXT_SIZE, __VA_ARGS__); \
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DebugStacker __debug_stacker(__buf);
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/*
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@ -132,34 +133,13 @@ private:
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*/
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#if CATCH_UNHANDLED_EXCEPTIONS == 1
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#define BEGIN_PORTABLE_DEBUG_EXCEPTION_HANDLER try{
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#define END_PORTABLE_DEBUG_EXCEPTION_HANDLER(logstream)\
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}catch(std::exception &e){\
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logstream<<"ERROR: An unhandled exception occurred: "\
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<<e.what()<<std::endl;\
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assert(0);\
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#define BEGIN_DEBUG_EXCEPTION_HANDLER try {
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#define END_DEBUG_EXCEPTION_HANDLER(logstream) \
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} catch (std::exception &e) { \
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logstream << "ERROR: An unhandled exception occurred: " \
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<< e.what() << std::endl; \
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assert(0); \
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}
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#ifdef _WIN32 // Windows
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#ifdef _MSC_VER // MSVC
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void se_trans_func(unsigned int, EXCEPTION_POINTERS*);
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#define BEGIN_DEBUG_EXCEPTION_HANDLER \
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BEGIN_PORTABLE_DEBUG_EXCEPTION_HANDLER\
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_set_se_translator(se_trans_func);
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#define END_DEBUG_EXCEPTION_HANDLER(logstream) \
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END_PORTABLE_DEBUG_EXCEPTION_HANDLER(logstream)
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#else // Probably mingw
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#define BEGIN_DEBUG_EXCEPTION_HANDLER\
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BEGIN_PORTABLE_DEBUG_EXCEPTION_HANDLER
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#define END_DEBUG_EXCEPTION_HANDLER(logstream)\
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END_PORTABLE_DEBUG_EXCEPTION_HANDLER(logstream)
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#endif
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#else // Posix
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#define BEGIN_DEBUG_EXCEPTION_HANDLER\
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BEGIN_PORTABLE_DEBUG_EXCEPTION_HANDLER
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#define END_DEBUG_EXCEPTION_HANDLER(logstream)\
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END_PORTABLE_DEBUG_EXCEPTION_HANDLER(logstream)
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#endif
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#else
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// Dummy ones
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#define BEGIN_DEBUG_EXCEPTION_HANDLER
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@ -110,12 +110,6 @@ public:
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ServerError(const std::string &s): BaseException(s) {}
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};
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// Only used on Windows (SEH)
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class FatalSystemException : public BaseException {
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public:
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FatalSystemException(const std::string &s): BaseException(s) {}
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};
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class ClientStateError : public BaseException {
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public:
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ClientStateError(std::string s): BaseException(s) {}
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@ -780,6 +780,8 @@ int main(int argc, char *argv[])
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{
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int retval;
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debug_set_exception_handler();
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log_add_output_maxlev(&main_stderr_log_out, LMT_ACTION);
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log_add_output_all_levs(&main_dstream_no_stderr_log_out);
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@ -419,6 +419,10 @@ inline const char * getPlatformName()
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void setXorgClassHint(const video::SExposedVideoData &video_data,
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const std::string &name);
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// This only needs to be called at the start of execution, since all future
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// threads in the process inherit this exception handler
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void setWin32ExceptionHandler();
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} // namespace porting
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#ifdef __ANDROID__
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