从C#调用非托管C++库(dll)会产生访问冲突错误(0xc0000005)
本文关键字：访问冲突 0xc0000005 错误 dll C++ 调用 | 更新日期: 2023-09-27 18:00:25
很抱歉问了这么长的问题。我只是想把我目前所知道的关于这个问题的一切都包括在内。
我正在使用Visual Studio 2008在C#中创建一个Windows窗体程序，该程序调用用C++编写的库
C++DLL分析由几个样本组成的测量数据。样本通过函数（PDSetWaveSample）传递给库，该函数将结构作为参数
在设置完所有样本后，使用另一个函数（PDPreProcess）处理测量数据，该函数也将结构作为参数
C++DLL在其内部数据结构中保存所有测量数据，并进行所有处理以获得结果。
在程序开始处理测量数据之前，一切似乎都正常工作。此时，程序崩溃并退出，并出现以下错误：
程序"XXX.vshost.exe:Managed"已退出，代码为1073741819（0xc0000005）。
稍后我将在这个问题中添加更多的调试信息和C#源代码。
你有任何关于如何前进的提示吗？或者可能是什么原因导致的
我运行的是Windows XP Professional，版本2002 SP 3。
当程序崩溃时，它首先给出这个错误消息
类型为"System"的未处理异常。未知模块中出现ExecutionEngineException。
以及中断或继续的可能性。我选择分手。
之后，我看了看组装：
没有为任何调用堆栈帧加载任何符号。无法显示源代码。
根据调试器的说法，错误发生时的程序集如下所示：
7C90E4FA call 7C90E528
7C90E4FF mov eax,dword ptr [esp]
7C90E502 mov esp,ebp
7C90E504 pop ebp
7C90E505 ret
7C90E506 lea esp,[esp]
7C90E50D lea ecx,[ecx]
7C90E510 mov edx,esp
7C90E512 sysenter
==>7C90E514 ret
7C90E515 lea esp,[esp]
7C90E51C lea esp,[esp]
7C90E520 lea edx,[esp+8]
7C90E524 int 2Eh
7C90E526 ret
7C90E527 nop
7C90E528 push ebp
7C90E529 mov ebp,esp
7C90E52B pushfd
执行在7C90E514 ret（我用===>标记）处停止
输出窗口显示以下消息：
'CalculationForm.exe': Loaded 'C:'CalculationForm'CalculationForm'bin'Debug'CalculationForm.exe', No native symbols in symbol file.
'CalculationForm.exe': Loaded 'C:'WINNT'system32'ntdll.dll'
'CalculationForm.exe': Loaded 'C:'WINNT'system32'kernel32.dll'
'CalculationForm.exe': Loaded 'C:'WINNT'system32'sysfer.dll'
'CalculationForm.exe': Loaded 'C:'WINNT'system32'mscoree.dll'
'CalculationForm.exe': Loaded 'C:'WINNT'system32'advapi32.dll'
'CalculationForm.exe': Loaded 'C:'WINNT'system32'rpcrt4.dll'
'CalculationForm.exe': Loaded 'C:'WINNT'system32'secur32.dll'
'CalculationForm.exe': Loaded 'C:'WINNT'system32'shlwapi.dll'
'CalculationForm.exe': Loaded 'C:'WINNT'system32'gdi32.dll'
'CalculationForm.exe': Loaded 'C:'WINNT'system32'user32.dll'
'CalculationForm.exe': Loaded 'C:'WINNT'system32'msvcrt.dll'
'CalculationForm.exe': Loaded 'C:'WINNT'system32'imm32.dll'
'CalculationForm.exe': Loaded 'C:'WINNT'Microsoft.NET'Framework'v2.0.50727'mscorwks.dll'
'CalculationForm.exe': Loaded 'C:'WINNT'WinSxS'x86_Microsoft.VC80.CRT_1fc8b3b9a1e18e3b_8.0.50727.4053_x-ww_e6967989'msvcr80.dll'
'CalculationForm.exe': Loaded 'C:'WINNT'system32'shell32.dll'
'CalculationForm.exe': Loaded 'C:'WINNT'WinSxS'x86_Microsoft.Windows.Common-Controls_6595b64144ccf1df_6.0.2600.6028_x-ww_61e65202'comctl32.dll'
'CalculationForm.exe': Loaded 'C:'WINNT'system32'comctl32.dll'
'CalculationForm.exe': Loaded 'C:'WINNT'Microsoft.NET'Framework'v2.0.50727'Culture.dll'
'CalculationForm.exe': Unloaded 'C:'WINNT'Microsoft.NET'Framework'v2.0.50727'Culture.dll'
'CalculationForm.exe': Loaded 'C:'WINNT'assembly'NativeImages_v2.0.50727_32'mscorlib'17179b71d7680399c00ce88ddc310209'mscorlib.ni.dll'
'CalculationForm.exe' (Managed): Loaded 'C:'WINNT'assembly'GAC_32'mscorlib'2.0.0.0__b77a5c561934e089'mscorlib.dll', Skipped loading symbols. Module is optimized and the debugger option 'Just My Code' is enabled.
'CalculationForm.exe': Loaded 'C:'WINNT'system32'ole32.dll'
'CalculationForm.exe': Loaded 'C:'WINNT'system32'MSCTF.dll'
'CalculationForm.exe' (Managed): Loaded 'C:'Tyohakemisto'WaveRoller'CalculationForm'CalculationForm'bin'Debug'CalculationForm.exe', Symbols loaded.
'CalculationForm.exe': Loaded 'C:'WINNT'Microsoft.NET'Framework'v2.0.50727'mscorjit.dll'
'CalculationForm.exe': Loaded 'C:'WINNT'assembly'NativeImages_v2.0.50727_32'System'2f867d97fb1a34e4d6985780631574bb'System.ni.dll'
'CalculationForm.exe': Loaded 'C:'WINNT'assembly'NativeImages_v2.0.50727_32'System.Drawing'f78f03ba3b1b21e3b26369402c117d33'System.Drawing.ni.dll'
'CalculationForm.exe': Loaded 'C:'WINNT'assembly'NativeImages_v2.0.50727_32'System.Windows.Forms'06b728c1e4ea291d4febee5ca33db4b4'System.Windows.Forms.ni.dll'
'CalculationForm.exe' (Managed): Loaded 'C:'WINNT'assembly'GAC_MSIL'System.Windows.Forms'2.0.0.0__b77a5c561934e089'System.Windows.Forms.dll', Skipped loading symbols. Module is optimized and the debugger option 'Just My Code' is enabled.
'CalculationForm.exe' (Managed): Loaded 'C:'WINNT'assembly'GAC_MSIL'System'2.0.0.0__b77a5c561934e089'System.dll', Skipped loading symbols. Module is optimized and the debugger option 'Just My Code' is enabled.
'CalculationForm.exe' (Managed): Loaded 'C:'WINNT'assembly'GAC_MSIL'System.Drawing'2.0.0.0__b03f5f7f11d50a3a'System.Drawing.dll', Skipped loading symbols. Module is optimized and the debugger option 'Just My Code' is enabled.
'CalculationForm.exe': Loaded 'C:'WINNT'assembly'NativeImages_v2.0.50727_32'System.Configuration'b2f3e4c45a980474c2dd08166038d645'System.Configuration.ni.dll'
'CalculationForm.exe' (Managed): Loaded 'C:'WINNT'assembly'GAC_MSIL'System.Configuration'2.0.0.0__b03f5f7f11d50a3a'System.Configuration.dll', Skipped loading symbols. Module is optimized and the debugger option 'Just My Code' is enabled.
'CalculationForm.exe': Loaded 'C:'WINNT'assembly'NativeImages_v2.0.50727_32'System.Xml'8ee82dfeff03ca87492149cdcbfc3f21'System.Xml.ni.dll'
'CalculationForm.exe' (Managed): Loaded 'C:'WINNT'assembly'GAC_MSIL'System.Xml'2.0.0.0__b77a5c561934e089'System.Xml.dll', Skipped loading symbols. Module is optimized and the debugger option 'Just My Code' is enabled.
'CalculationForm.exe': Loaded 'ImageAtBase0x10000000'
'CalculationForm.exe': Unloaded 'ImageAtBase0x10000000'
'CalculationForm.exe': Loaded 'C:'WINNT'assembly'GAC_MSIL'Microsoft.VisualStudio.Debugger.Runtime'9.0.0.0__b03f5f7f11d50a3a'Microsoft.VisualStudio.Debugger.Runtime.dll'
'CalculationForm.exe' (Managed): Loaded 'C:'WINNT'assembly'GAC_MSIL'Microsoft.VisualStudio.Debugger.Runtime'9.0.0.0__b03f5f7f11d50a3a'Microsoft.VisualStudio.Debugger.Runtime.dll'
'CalculationForm.exe': Loaded 'C:'Program Files'Microsoft Visual Studio 9.0'Common7'Packages'Debugger'x86'Microsoft.VisualStudio.Debugger.Runtime.Impl.dll'
'CalculationForm.exe': Loaded 'C:'WINNT'WinSxS'x86_Microsoft.VC90.CRT_1fc8b3b9a1e18e3b_9.0.30729.4148_x-ww_d495ac4e'msvcr90.dll'
'CalculationForm.exe': Loaded 'C:'WINNT'system32'uxtheme.dll'
'CalculationForm.exe': Loaded 'C:'WINNT'system32'xpsp2res.dll', Binary was not built with debug information.
'CalculationForm.exe' (Managed): Loaded 'C:'CalculationForm'CalculationForm'bin'Debug'AxInterop.PDCOMMXLib.dll'
'CalculationForm.exe': Loaded 'C:'WINNT'WinSxS'x86_Microsoft.Windows.GdiPlus_6595b64144ccf1df_1.0.6002.22509_x-ww_c7dad023'GdiPlus.dll'
'CalculationForm.exe': Loaded 'C:'WINNT'system32'version.dll'
'CalculationForm.exe': Unloaded 'C:'WINNT'system32'version.dll'
'CalculationForm.exe': Loaded 'C:'WINNT'system32'MSCTFIME.IME'
'CalculationForm.exe': Loaded 'C:'WINNT'system32'oleaut32.dll'
'CalculationForm.exe': Loaded 'C:'WINNT'Microsoft.NET'Framework'v2.0.50727'diasymreader.dll'
'CalculationForm.exe': Loaded 'C:'WINNT'system32'clbcatq.dll'
'CalculationForm.exe': Loaded 'C:'WINNT'system32'comres.dll'
'CalculationForm.exe': Loaded 'C:'WINNT'system32'version.dll'
'CalculationForm.exe': Loaded 'C:'WINNT'system32'msi.dll'
'CalculationForm.exe': Loaded 'C:'Nortek'PdCommX'PdCommX.dll', Binary was not built with debug information.
'CalculationForm.exe': Loaded 'C:'WINNT'system32'mfc100.dll'
'CalculationForm.exe': Loaded 'C:'WINNT'system32'msvcr100.dll'
'CalculationForm.exe': Loaded 'C:'WINNT'system32'msimg32.dll'
'CalculationForm.exe': Loaded 'C:'WINNT'system32'msvcp100.dll'
'CalculationForm.exe': Loaded 'C:'WINNT'system32'sxs.dll'
'CalculationForm.exe' (Managed): Loaded 'C:' CalculationForm'CalculationForm'bin'Debug'Interop.PDCOMMXLib.dll'
'CalculationForm.exe': Loaded 'C:'WINNT'assembly'NativeImages_v2.0.50727_32'Accessibility'775f9f0da40c277eb7d460084858a2ac'Accessibility.ni.dll'
'CalculationForm.exe' (Managed): Loaded 'C:'WINNT'assembly'GAC_MSIL'Accessibility'2.0.0.0__b03f5f7f11d50a3a'Accessibility.dll', Skipped loading symbols. Module is optimized and the debugger option 'Just My Code' is enabled.
The thread 'Win32 Thread' (0x1f08) has exited with code 0 (0x0).
The thread 'Win32 Thread' (0x1cc4) has exited with code 0 (0x0).
The thread 'Win32 Thread' (0x1598) has exited with code 0 (0x0).
The thread 'Win32 Thread' (0xaa8) has exited with code 0 (0x0).
The thread 'Win32 Thread' (0x1db8) has exited with code 0 (0x0).
The thread 'Win32 Thread' (0x1e74) has exited with code 0 (0x0).
The thread 'Win32 Thread' (0x1958) has exited with code 0 (0x0).
The program '[4656] CalculationForm.exe: Managed' has exited with code 0 (0x0).
The program '[4656] CalculationForm.exe: Native' has exited with code 0 (0x0).
程序结束时，调用堆栈为：
ntdll.dll!7c90e514()
[Frames below may be incorrect and/or missing, no symbols loaded for ntdll.dll]
ntdll.dll!7c90df5a()
kernel32.dll!7c8025db()
mscorwks.dll!79e8c639()
mscorwks.dll!79e8c56f()
mscorwks.dll!79f7466d()
mscorwks.dll!7a105cf1()
mscorwks.dll!7a105e37()
mscorwks.dll!7a1061db()
mscorwks.dll!7a09c314()
mscorwks.dll!79f504da()
mscorwks.dll!79ef4755()
ntdll.dll!7c9032a8()
ntdll.dll!7c90327a()
ntdll.dll!7c92a8c3()
ntdll.dll!7c90e48a()
ntdll.dll!7c94b721()
ntdll.dll!7c919f68()
ntdll.dll!7c919f68()
ntdll.dll!7c919f68()
ntdll.dll!7c919f68()
ntdll.dll!7c910385()
ntdll.dll!7c917c51()
ntdll.dll!7c917e8f()
mscorwks.dll!79e71b4c()
mscorwks.dll!79e821f9()
mscorwks.dll!79e96571()
mscorwks.dll!79e965a4()
mscorwks.dll!79e965c2()
mscorwks.dll!79ecca87()
mscorwks.dll!79ef531b()
mscorwks.dll!79ef6dd8()
mscorwks.dll!79ef6e76()
mscorwks.dll!79ef4755()
ntdll.dll!7c9032a8()
ntdll.dll!7c90327a()
ntdll.dll!7c92a8c3()
ntdll.dll!7c90e48a()
ntdll.dll!7c917ca7()
ntdll.dll!7c917e8f()
mscorwks.dll!7a0ecb29()
mscorwks.dll!79f6879a()
mscorwks.dll!79f68780()
mscorwks.dll!79f73f3d()
mscorwks.dll!79ecd659()
mscorwks.dll!79e71b4c()
mscorwks.dll!79e821f9()
mscorwks.dll!79e96571()
mscorwks.dll!79e965a4()
mscorwks.dll!79e965c2()
mscorwks.dll!79f87ad3()
mscorwks.dll!79f87c32()
mscorlib.ni.dll!792d5428()
mscorlib.ni.dll!792d51d6()
mscorlib.ni.dll!792d50be()
mscorwks.dll!79e71b4c()
mscorwks.dll!79e821f9()
mscorwks.dll!79e96571()
mscorwks.dll!79e965a4()
mscorwks.dll!79f29e09()
mscorwks.dll!79f2a1e0()
mscorwks.dll!79f2a130()
mscorwks.dll!79f29837()
mscorwks.dll!79f298bc()
mscorwks.dll!79f29967()
System.ni.dll!7a574b73()
System.Windows.Forms.ni.dll!7b1c87be()
mscorwks.dll!79e71b4c()
mscorwks.dll!79e821f9()
System.Windows.Forms.ni.dll!7b1c86a0()
System.Windows.Forms.ni.dll!7b1c8621()
System.Windows.Forms.ni.dll!7b6fa167()
mscorwks.dll!79e71b4c()
mscorwks.dll!79e821f9()
mscorwks.dll!79fc1fe2()
mscorwks.dll!79fc219a()
mscorwks.dll!79fc22be()
mscorwks.dll!79f077ad()
mscorwks.dll!79e8c4ec()
mscorwks.dll!79e8840b()
mscorwks.dll!79f13cb5()
mscorwks.dll!79f1129c()
mscorwks.dll!79f07e17()
mscoree.dll!7900b77b()
mscoree.dll!7900b73d()
mscoree.dll!79004de3()
kernel32.dll!7c817077()
我已经为C++DLL创建了一个包装类。包装器类基于库的头文件：
#ifndef _PDWAVEAPI_H__
#define _PDWAVEAPI_H__
#ifdef PDWAVE_EXPORTS
#define PDWAVE_API __declspec(dllexport)
#else
#define PDWAVE_API __declspec(dllimport)
#endif
typedef struct {
bool bValid;
float fPressure;
float fDistance;
float fVel[4];
unsigned short nAmp[4];
} PDWaveSample;
typedef struct {
float fST[4096];
float fWinFloor;
float fWinCeil;
bool bUseWindow;
bool bSTOk;
bool bGetRawAST;
bool bValidBurst;
} PDWaveBurst;
PDWAVE_API int __stdcall PDSetWaveSample(PDWaveSample *pWaveSample);
PDWAVE_API int __stdcall PDPreProcess(int nSample, PDWaveBurst *pWaveBurst);
C#包装器类是：
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Runtime.InteropServices; // DllImport
namespace Cpp_LibraryApi
{
[StructLayout(LayoutKind.Sequential)]
public struct PDWaveSample
{
public bool bValid;
public float fPressure;
public float fDistance;
public float[] fVel;
public ushort[] nAmp
// Constructor to initialize tables
public static PDWaveSample Create()
{
PDWaveSample DataStruct = new PDWaveSample();
DataStruct.fVel = new float[4];
DataStruct.nAmp = new ushort[4];
return DataStruct;
}
}
[StructLayout(LayoutKind.Sequential)]
public struct PDWaveBurst {
public float[] fST;
public float fWinFloor;
public float fWinCeil;
public bool bUseWindow;
public bool bSTOk;
public bool bGetRawAST;
public bool bValidBurst;
public static PDWaveBurst Create()
{
PDWaveBurst DataStruct = new PDWaveBurst();
DataStruct.fST = new float[Constants.PD_MAX_WAVEMEAS_AST];
return DataStruct;
}
}
public class Cpp_LibraryWrapper
{
[DllImport("cpp_library.dll")]
public static extern int PDSetWaveSample(ref PDWaveSample pWaveSample);
[DllImport("cpp_library.dll")]
public static extern int PDPreProcess(int nSample, ref PDWaveBurst pWaveBurst);
}
}
Windows窗体应用程序以以下方式使用这些功能：
我把函数简化了一点。实际上，测量值是使用第三方ActiveX组件从串行线路读取的。
using System;
using System.Configuration;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Text;
using System.Windows.Forms;
using System.IO.Ports;
using System.Timers;
using System.Diagnostics;
namespace CalculationForm
{
public partial class frmCalculationForm : Form
{
int nBurstSamples = 0;
public frmCalculationForm()
{
InitializeComponent();
}
private void OnNewData_Event(object sender, Events_OnNewDataEvent e)
{
try
{
Cpp_LibraryApi.PDWaveSample WaveSampleData = Cpp_LibraryApi.PDWaveSample.Create();
ReadWaveSample(ref WaveSampleData);
SetWaveSample(WaveSampleData);
if (++nBurstSamples > 512)
{
// Process
ProcessBurstData(nBurstSamples);
}
}
catch (Exception ex)
{
Debug.WriteLine(ex.Message.ToString());
}
}
public void ReadWaveSample(ref Cpp_LibraryApi.PDWaveSample WaveSampleData)
{
float[] dVel = new float[4] { (float)-3.26, (float)-2.808, (float)-3.651, (float)-3.43 };
ushort[] usAmp = new ushort[4] { 41, 40, 0, 0 };
WaveSampleData.bValid = true;
WaveSampleData.fPressure = 12.432;
WaveSampleData.fDistance = 2.64;
WaveSampleData.fVel = dVel;
WaveSampleData.nAmp = usAmp;
}
public void SetWaveSample(Cpp_LibraryApi.PDWaveSample WaveSampleData)
{
Cpp_LibraryWrapper.PDSetWaveSample(ref WaveSampleData);
}
public void ProcessBurstData(int nSamples)
{
try
{
Cpp_LibraryApi.PDWaveBurst WaveBurstData = Cpp_LibraryApi.PDWaveBurst.Create();
WaveBurstData.fST = new float[4096];
WaveBurstData.fWinFloor = (float)1.25;
WaveBurstData.fWinCeil = 2;
WaveBurstData.bUseWindow = false;
WaveBurstData.bSTOk = false;
WaveBurstData.bGetRawAST = false;
WaveBurstData.bValidBurst = false;
Cpp_LibraryWrapper.PDPreProcess(nSamples, ref WaveBurstData);
}
catch (Exception ex)
{
Debug.WriteLine(ex.Message.ToString());
}
}
}
}
在程序进入测量处理阶段之前，一切似乎都很顺利。当
Cpp_LibraryWrapper.PDPreProcess(nSamples, ref WaveBurstData);
调用时，执行将停止，并出现以下错误：
程序"XXX.vshost.exe:Managed"已退出，代码为1073741819（0xc0000005）。
我设置了以下调试选项：
- 启用非托管代码调试
- 启用Visual Studio宿主进程
- 公共语言运行时异常"抛出"
- Win32异常->访问违规"抛出"
您的结构被错误地整理，因为您没有完全正确地声明数组。您需要告诉整理器它们是固定长度的数组。
编辑
在我最初的回答中，我遗漏了bool成员未正确编组的添加错误。默认编组用于4字节的Windows BOOL，但需要1字节的C++bool。下面的代码现在可以正确地处理这个问题。很抱歉造成混乱。
public struct PDWaveSample
{
[MarshalAs(UnmanagedType.I1)]
public bool bValid;
public float fPressure;
public float fDistance;
[MarshalAs(UnmanagedType.LPArray, SizeConst=4)]
public float[] fVel;
[MarshalAs(UnmanagedType.LPArray, SizeConst=4)]
public ushort[] nAmp
}
public struct PDWaveBurst {
[MarshalAs(UnmanagedType.LPArray, SizeConst=4096)]
public float[] fST;
public float fWinFloor;
public float fWinCeil;
[MarshalAs(UnmanagedType.I1)]
public bool bUseWindow;
[MarshalAs(UnmanagedType.I1)]
public bool bSTOk;
[MarshalAs(UnmanagedType.I1)]
public bool bGetRawAST;
[MarshalAs(UnmanagedType.I1)]
public bool bValidBurst;
}
实际上，我不得不将数组编组为ByValArray。除此之外，运行环境还有一些值得抱怨的地方：
"CalculationForm.exe 中首次出现类型为"System.TypeLoadException"的异常
其他信息：无法封送类型为"PdWaveApi"的字段"fVel"。PDWaveSample"：无效的托管/非托管类型组合（数组字段必须与ByValArray或SafeArray成对出现）。"
因此，我将结构更改为：
public struct PDWaveSample
{
[MarshalAs(UnmanagedType.I1)]
public bool bValid;
public float fPressure;
public float fDistance;
[MarshalAs(UnmanagedType.ByValArray, SizeConst=4)]
public float[] fVel;
[MarshalAs(UnmanagedType.ByValArray, SizeConst=4)]
public ushort[] nAmp
}
public struct PDWaveBurst {
[MarshalAs(UnmanagedType.ByValArray, SizeConst=4096)]
public float[] fST;
public float fWinFloor;
public float fWinCeil;
[MarshalAs(UnmanagedType.I1)]
public bool bUseWindow;
[MarshalAs(UnmanagedType.I1)]
public bool bSTOk;
[MarshalAs(UnmanagedType.I1)]
public bool bGetRawAST;
[MarshalAs(UnmanagedType.I1)]
public bool bValidBurst;
}