linux下 比较简单，这里不在说明，

windows下 相对复杂一点 SEH，用SetUnhandledExceptionFilter 来捕获 MiniDumpWriteDump 来写dmp文件，这种方法还不够完全，一些错误 一样无法捕获 比如 多次 delete ，可修改注册表  crash自动生成dmp 而不用代码去控制   结合代码控制 一起使用

#if _WIN32

#include <windows.h>
#include <dbghelp.h>
#pragma comment(lib, "dbghelp.lib")

void myInvalidParameterHandler(const wchar_t* expression,
    const wchar_t* function,
    const wchar_t* file,
    unsigned int line,
    uintptr_t pReserved)
{

    throw 1;
}

LONG CustomCrashHandledExceptionFilter(_EXCEPTION_POINTERS *ExceptionInfo)
{
    CHAR strDumpFile[MAX_PATH] = { 0 };
    SYSTEMTIME tm;
    HANDLE hFile = NULL;

    time_t rawtime;
    struct tm * t;
    time(&rawtime);
    t = localtime(&rawtime);

    sprintf(strDumpFile, "%d%s%d-%04d-%02d-%02d-%02d-%02d-%02d.dmp", sid, name.c_str(), g_Inner_id, t->tm_year + 1900, t->tm_mon + 1, t->tm_mday, t->tm_hour, t->tm_min, t->tm_sec);

    hFile = CreateFileA(strDumpFile, GENERIC_WRITE, FILE_SHARE_WRITE, NULL, CREATE_ALWAYS, FILE_ATTRIBUTE_NORMAL, NULL);
    if (hFile != INVALID_HANDLE_VALUE)
    {
        MINIDUMP_EXCEPTION_INFORMATION ExInfo;
        ExInfo.ThreadId = GetCurrentThreadId();
        ExInfo.ExceptionPointers = ExceptionInfo;
        ExInfo.ClientPointers = NULL;
        BOOL bOK = MiniDumpWriteDump(
            GetCurrentProcess(),
            GetCurrentProcessId(),
            hFile,
            MiniDumpNormal,
            &ExInfo,
            NULL,
            NULL);

        CloseHandle(hFile);
    }
    return EXCEPTION_CONTINUE_SEARCH;
}
LPTOP_LEVEL_EXCEPTION_FILTER WINAPI EmptySetUnhandledExceptionFilter(
    LPTOP_LEVEL_EXCEPTION_FILTER lpTopLevelExceptionFilter)
{
    return NULL;
}

void myPurecallHandler(void)
{

    throw 1;
}

BOOL HookSetUnhandledExceptionFilter()
{
    HMODULE hKernel32 = LoadLibraryA(("kernel32.dll"));
    if (hKernel32 == NULL) return FALSE;
    void *pOrgEntry = GetProcAddress(hKernel32, "SetUnhandledExceptionFilter");
    if (pOrgEntry == NULL) return FALSE;
    unsigned char newJump[100];
    DWORD dwOrgEntryAddr = (DWORD)pOrgEntry;
    dwOrgEntryAddr += 5; // add 5 for 5 op-codes for jmp far
    void *pNewFunc = &EmptySetUnhandledExceptionFilter;
    DWORD dwNewEntryAddr = (DWORD)pNewFunc;
    DWORD dwRelativeAddr = dwNewEntryAddr - dwOrgEntryAddr;

    newJump[0] = 0xE9;  // JMP absolute
    memcpy(&newJump[1], &dwRelativeAddr, sizeof(pNewFunc));
    SIZE_T bytesWritten;
    BOOL bRet = WriteProcessMemory(GetCurrentProcess(),
        pOrgEntry, newJump, sizeof(pNewFunc) + 1, &bytesWritten);
    return bRet;
}

class CrashHandler
{
public:
    CrashHandler()
    {
    //    SetErrorMode(SEM_FAILCRITICALERRORS);
        SetUnhandledExceptionFilter((LPTOP_LEVEL_EXCEPTION_FILTER)CustomCrashHandledExceptionFilter);
        _purecall_handler old_pure_handle;
        old_pure_handle = _set_purecall_handler(myPurecallHandler);
        _invalid_parameter_handler oldHandler;
        oldHandler = _set_invalid_parameter_handler(myInvalidParameterHandler);
        HookSetUnhandledExceptionFilter();
    }
};
#else
class CrashHandler
{
public:
    CrashHandler()
    {
        assert(false);
    }
};
#endif