使用从Solaris 64位或Linux 32位到Linux 64位的内存映射文件

Question

our application uses several memory mapped files to communicate between several processes. The production runs on a solaris with 64 bit and the development machine is a linux with 32 bit. In the future we would like to use a 64 bit linux for all environments. The compiling has already been finished and now I need the data which are stored in the memory mapped files. Unfortunately I get an "bus error", if I use the files from the 32 bit linux. If I have used the files of the 64 bit solaris, the process crashed.

As far as I understand, the bus error occurs because of an adressing error in the 32 bit files (adress beyond the file end). In addition it seems that solaris files are not compatible with a linux system. Thus I have created new memory mapped files on the 64 bit linux and the application works but has obviously no data.

Is there a way that I can read the old version of these files on my new 64 bit linux system? I would like to write my own conversion program to extract the data and to fill the new generated files.

Answer 1

崩溃的原因是，您将文件加载到内存中，然后尝试使用不同的数据结构进行访问- 即使它们在源代码中看起来相同，它们在运行时也不相同 ，而不是针对不同体系结构进行编译时。