windows用户态程序的Dump

熟悉Linux的开发人员都知道，在Linux下开发程序，如果程序崩溃了，可以通过配置Core Dump，来让程序崩溃的瞬间产生一个Dump文件，然后通过dump文件来调试程序为什么崩溃。但是windows下就比较麻烦。

windows下配置用户态程序的Dump非常麻烦， https://msdn.microsoft.com/en-us/library/windows/desktop/bb787181(v=vs.85).aspx

上面那个链接说了一堆，反正我没有细看。来看经过搜索，发现StackOverflow上推荐了一个UserDump.exe的命令行工具，

这个工具是微软官方出品的，https://support.microsoft.com/zh-cn/help/241215/how-to-use-the-userdump-exe-tool-to-create-a-dump-file

用法是：

下载下来，安装，解压到特定目录，里面就可以看到userdump.exe这个命令行工具了，把这个命令行工具随着公司的产品软件打包，在产品软件中的main函数中编写如下代码:

 LONG __stdcall
 MyUnhandledExceptionFilter(
 EXCEPTION_POINTERS *ExceptionInfo
 )
 {
     // Invoke userdump here.
     // The implementation is similar to MyFilterFunction,
     // above.
     (void)ExceptionInfo;
 
     QString dumperExe = QString("%1/%2/%3").arg(qApp->applicationDirPath()).arg("dumper").arg("userdump.exe");
     QString cmdLine = QString("%1 -k -w %2").arg(dumperExe).arg("TRMSMonitor.exe");
 
     QProcess* startDump = new QProcess;
     startDump->start(cmdLine);
     startDump->waitForFinished(-);
 
     return EXCEPTION_EXECUTE_HANDLER;
 }
 
 int main(int argc, char* argv[])
 {
     QApplication a(argc, argv);
 
     SetUnhandledExceptionFilter(MyUnhandledExceptionFilter);
 
     //主程序单例模式
     RunGuard guard("TRMS");
     if (!guard.tryToRun()) {
         exit(-);
     }
 
     //设置Qt的TEXT编码器
     QTextCodec::setCodecForLocale(QTextCodec::codecForName("gb18030"));
 
    // any code here
 
     return a.exec();
 }

以上代码的意思是，在程序崩溃的瞬间，未处理异常的时刻，调用userdump命令行来生成程序自身的Dump文件，我试过了，解引用空指针的异常成功生成了Dump文件。TRMSMonitor.exe，这个可以替换为产品主程序的exe名。

userdump命令行还有其他用法，可以做很多事情。这里不多说了，这里只是让程序崩溃产生自身的Dump，类似Linux。

当然，还有修改注册表的方式来让系统自动产生Dump，最推荐这样的方式，这样产生的Dump最为准确： https://www.cnblogs.com/hushaojun/p/6388153.html

如果WinDbg下载了符号表，那么直接可以把产生crash的源码崩溃地点显示出来：

Microsoft (R) Windows Debugger Version 6.12.0002.633 X86
Copyright (c) Microsoft Corporation. All rights reserved.
 
Loading Dump File [C:\crashdumps\mid.exe.2324.dmp]
User Mini Dump File with Full Memory: Only application data is available
 
WARNING: Minidump contains unknown stream type 0x15
WARNING: Minidump contains unknown stream type 0x16
Symbol search path is: srv*c:\symbols*http://msdl.microsoft.com/download/symbols
Executable search path is:
Windows 7 Version 16299 MP (4 procs) Free x64
Product: WinNt, suite: SingleUserTS
Machine Name:
Debug session time: Fri May  4 10:57:03.000 2018 (UTC + 8:00)
System Uptime: 0 days 23:20:34.747
Process Uptime: 0 days 0:00:03.000
........................................
This dump file has an exception of interest stored in it.
The stored exception information can be accessed via .ecxr.
(914.35c4): Access violation - code c0000005 (first/second chance not available)
ntdll!ZwWaitForMultipleObjects+0x14:
00007ffe`5c5b0e14 c3              ret
0:000> !analyze -v
*******************************************************************************
*                                                                             *
*                        Exception Analysis                                   *
*                                                                             *
*******************************************************************************
 
Failed calling InternetOpenUrl, GLE=12029
 
FAULTING_IP:
mid!CJASE2000App::InitInstance+3c [d:\furen-work\furen-projects\tuxedo-projects\zjj\mid\jase2000.cpp @ 223]
00007ff6`ced7aa9c 45892424        mov     dword ptr [r12],r12d
 
EXCEPTION_RECORD:  ffffffffffffffff -- (.exr 0xffffffffffffffff)
ExceptionAddress: 00007ff6ced7aa9c (mid!CJASE2000App::InitInstance+0x000000000000003c)
   ExceptionCode: c0000005 (Access violation)
  ExceptionFlags: 00000000
NumberParameters: 2
   Parameter[0]: 0000000000000001
   Parameter[1]: 0000000000000000
Attempt to write to address 0000000000000000
 
DEFAULT_BUCKET_ID:  NULL_POINTER_WRITE
 
PROCESS_NAME:  mid.exe
 
ERROR_CODE: (NTSTATUS) 0xc0000005 - 0x%p
 
EXCEPTION_CODE: (NTSTATUS) 0xc0000005 - 0x%p
 
EXCEPTION_PARAMETER1:  0000000000000001
 
EXCEPTION_PARAMETER2:  0000000000000000
 
WRITE_ADDRESS:  0000000000000000 
 
FOLLOWUP_IP:
mid!CJASE2000App::InitInstance+3c [d:\furen-work\furen-projects\tuxedo-projects\zjj\mid\jase2000.cpp @ 223]
00007ff6`ced7aa9c 45892424        mov     dword ptr [r12],r12d
 
MOD_LIST: <ANALYSIS/>
 
NTGLOBALFLAG:  0
 
APPLICATION_VERIFIER_FLAGS:  0
 
FAULTING_THREAD:  00000000000035c4
 
PRIMARY_PROBLEM_CLASS:  NULL_POINTER_WRITE
 
BUGCHECK_STR:  APPLICATION_FAULT_NULL_POINTER_WRITE
 
LAST_CONTROL_TRANSFER:  from 000000005e44ccae to 00007ff6ced7aa9c
 
STACK_TEXT:
00000000`00cff3a0 00000000`5e44ccae : 00000000`00000001 00000000`00000001 00007ff6`ced30000 00000000`00000000 : mid!CJASE2000App::InitInstance+0x3c [d:\furen-work\furen-projects\tuxedo-projects\zjj\mid\jase2000.cpp @ 223]
00000000`00cff710 00007ff6`ceda05e3 : 00000000`02eb4383 00000000`00000000 00000000`00000000 00000000`00000000 : mfc100!AfxWinMain+0x76
00000000`00cff750 00007ffe`5a8d1fe4 : 00000000`00000000 00000000`00000000 00000000`00000000 00000000`00000000 : mid!__tmainCRTStartup+0x15f [f:\dd\vctools\crt_bld\self_64_amd64\crt\src\crtexe.c @ 547]
00000000`00cff800 00007ffe`5c57f061 : 00000000`00000000 00000000`00000000 00000000`00000000 00000000`00000000 : kernel32!BaseThreadInitThunk+0x14
00000000`00cff830 00000000`00000000 : 00000000`00000000 00000000`00000000 00000000`00000000 00000000`00000000 : ntdll!RtlUserThreadStart+0x21
 
FAULTING_SOURCE_CODE:
   219:    // registerExceptionHandler();
   220:
   221:     int *pSS = NULL;
   222:
>  223:     *pSS = 0;
   224:
   225:     m_hMutex = CreateMutex(
   226: 		NULL,                  // no security descriptor
   227: 		FALSE,                 // mutex not owned
   228: 		"KD20_Transaction");  // object name
 
SYMBOL_STACK_INDEX:  0
 
SYMBOL_NAME:  mid!CJASE2000App::InitInstance+3c
 
FOLLOWUP_NAME:  MachineOwner
 
MODULE_NAME: mid
 
IMAGE_NAME:  mid.exe
 
DEBUG_FLR_IMAGE_TIMESTAMP:  5aebcbd4
 
STACK_COMMAND:  dt ntdll!LdrpLastDllInitializer BaseDllName ; dt ntdll!LdrpFailureData ; ~0s; .ecxr ; kb
 
FAILURE_BUCKET_ID:  NULL_POINTER_WRITE_c0000005_mid.exe!CJASE2000App::InitInstance
 
BUCKET_ID:  X64_APPLICATION_FAULT_NULL_POINTER_WRITE_mid!CJASE2000App::InitInstance+3c
 
WATSON_STAGEONE_URL:  http://watson.microsoft.com/StageOne/mid_exe/2_0_0_0/5aebcbd4/mid_exe/2_0_0_0/5aebcbd4/c0000005/0004aa9c.htm?Retriage=1
 
Followup: MachineOwner
---------