DOCUMENT:Q255252 11-JUN-2002 [visualc] TITLE :INFO: Accessing and Building Projects Over a Network Using VC++ PRODUCT :Microsoft C Compiler PROD/VER::5.0,6.0 OPER/SYS: KEYWORDS:kbnetwork kbide kbOSUNIX kbVC kbVC500 kbVC600 kbOSWin kbDevStudio kbOSNovell kbDSupport ====================================================================== ------------------------------------------------------------------------------- The information in this article applies to: - Microsoft Visual C++, 32-bit Enterprise Edition, versions 5.0, 6.0 - Microsoft Visual C++, 32-bit Professional Edition, versions 5.0, 6.0 - Microsoft Visual C++, 32-bit Learning Edition, version 6.0 - Microsoft Visual C++.NET (2002) ------------------------------------------------------------------------------- SUMMARY ======= Visual C++ was not specifically designed and tested to access and build projects directly over a network. If you try to perform these tasks with Visual C++, you will experience problems with building and performance. Visual C++ does not perform any special operations to accommodate network drives and shares, and it is unaware of whether the file it is reading or writing is on a network drive or a local drive. Use of Visual C++ in this manner is not supported. MORE INFORMATION ================ You will experience performance problems when you use Visual C++ to access projects in the following configurations: - Share a Visual C++ project on a Windows 98-based computer. On a computer running Windows NT 4.0, use Visual C++ to open the shared project. From the FileView tab, select a file and double-click to open it. You will experience a delay. This is due to the fact that Windows 98 is a nonopportunistic locking server. (If the same project is shared from Windows NT 4.0 or Windows 2000, you might not experience this problem.) - Share a Visual C++ project on a Windows 98-based computer. On a computer running Windows NT 4.0, map the share to a drive. Open the project from the mapped drive using Visual C++. You will notice that Visual C++ accesses the project's source and header files approximately every 4 seconds. (If the same project is shared from Windows NT 4.0 or Windows 2000, you might not experience this problem.) There may be several other network configurations under which Visual C++ performance could suffer. For example; you may be using SAMBA to obtain files from remote UNIX computers. SAMBA is a file service that attempts to emulate Windows server message block (SMB) network file protocol. Microsoft recommends that you use source code control software to obtain a local copy of projects for use with Visual C++. Microsoft Visual SourceSafe is source code control software that is optimized for use with Visual C++. There are other source code control software packages available, but they may not be optimized for use with Visual C++, so you may run into performance problems. In such cases, contact the vendor of the source code control software for assistance. REFERENCES ========== For additional information, click the article numbers below to view the articles in the Microsoft Knowledge Base: Q236399 HOWTO: Troubleshoot Visual C++ Performance Problems Q130615 PRB: Unwanted Rebuilds Occur When Using NMAKE or Visual C++ See the following area in the MSDN Library for Visual C++ 6.0 for documentation on Visual SourceSafe: MSDN Library; Visual Studio 6.0 Documentation; Visual SourceSafe Documentation See the following topic in the MSDN Library for Visual C++ 6.0 for documentation on Opportunistic Locks: MSDN Library; Platform SDK; Base Services; Files and I/O; File Systems; About File Systems; Shared File System Features; Opportunistic Locks http://msdn.microsoft.com/visualc/technical/articles/teamwork/default.asp The third-party products discussed in this article are manufactured by vendors independent of Microsoft; we make no warranty, implied or otherwise, regarding these products' performance or reliability. Additional query words: ====================================================================== Keywords : kbnetwork kbide kbOSUNIX kbVC kbVC500 kbVC600 kbOSWin kbDevStudio kbOSNovell kbDSupport kbGrpDSTools kbPerformance Technology : kbVCsearch kbAudDeveloper kbVC500 kbVC600 kbVC32bitSearch kbVCNET kbVC500Search Version : :5.0,6.0 Issue type : kbinfo ============================================================================= THE INFORMATION PROVIDED IN THE MICROSOFT KNOWLEDGE BASE IS PROVIDED "AS IS" WITHOUT WARRANTY OF ANY KIND. MICROSOFT DISCLAIMS ALL WARRANTIES, EITHER EXPRESS OR IMPLIED, INCLUDING THE WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. IN NO EVENT SHALL MICROSOFT CORPORATION OR ITS SUPPLIERS BE LIABLE FOR ANY DAMAGES WHATSOEVER INCLUDING DIRECT, INDIRECT, INCIDENTAL, CONSEQUENTIAL, LOSS OF BUSINESS PROFITS OR SPECIAL DAMAGES, EVEN IF MICROSOFT CORPORATION OR ITS SUPPLIERS HAVE BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES. SOME STATES DO NOT ALLOW THE EXCLUSION OR LIMITATION OF LIABILITY FOR CONSEQUENTIAL OR INCIDENTAL DAMAGES SO THE FOREGOING LIMITATION MAY NOT APPLY. Copyright Microsoft Corporation 2002.