Hello - I'm having a problem using TMapFiles to communicate between two processes on NT4. Since I want two-way communication, each process (let's call them A and B) "RECREATE"'s a mapfile for writing to the other process and then "READ"'s the other process's file. so we have two mapfiles showing up: 1. c:\AtoB.map 2. c:\BtoA.map Now suppose process A crashes while B is reading AtoB.map. In principle, B can detect this and Close() the mapfile which is dealing with reading AtoB.map. Then when A comes back, it can again perform a "RECREATE" on c:\AtoB.map and then B can reopen it. However, this does _not_ work. Even after closing the mapfile object which performs the read (the docs say not to delete the object!) i am unable to recreate it -- the error is: Error in <TMapFile::TMapFile>: file c:\AtoB.map already exists Is this a bug or feature? Regards, Peter --------------------------------------------------------------------------- Peter Steinberg, Columbia University mailto:Peter.Steinberg@Cern.ch Nevis Laboratories + http://www.nevis.columbia.edu/~steinber P.O. Box 137 _ O _ Home Phone: (212) 678-5971 (or 136 South Broadway) ( `-|-' ) Nevis: (914) 591-2817 (fax 8120) Irvington, NY 10533 _+|+_/ Campus: (212) 854-4653 ----- PCS: (917) 549-3094 BNL: (516) 344-7843 ---------------------------------------------------------------------------
This archive was generated by hypermail 2b29 : Tue Jan 04 2000 - 00:43:35 MET