bajohnso@bbn.com (Bruce Johnson) (09/28/90)
Hi, I am developing code on a Sun workstation SunOS 4.03. I am trying to provide an emulation of a target system that will run on a Sun. Consequently, I do not wish to modify the base code. I have two Unix processes. Process 1 mallocs some memory space. Then process 1 communicates this location to process 2. Process 2 will then copy some data into process 1 memory space. To accomplish this action I believe that I need the ability to map process 1's memory map into process 2 and vice versa. This could be something like: PROCESS 1 PROCESS 2 ========= ========= 00000000 00000000 . . . . . . Process 1's space Process 2's space 00300000 00500000 01000000 01000000 . . . . . . Process 2's space Process 1's space 01500000 01300000 Constraints 1. I cannot use shared memory (shmget...etc), because I would like the whole process to be mapped and it implies I would have to change the target code. 2. I am using lightweight processes to provide tasking within each process and I cannot use them to provide this capability. Also, I would like to build the original processes with a separate link. I don't believe that the SunOS supports such a concept, but I also do not believe it is impossible to accomplish. Has anyone any experience with this idea? Thanks,
bajohnso@bbn.com (Bruce Johnson) (09/28/90)
Hi, Sorry if this is a repeat ... I am trying to get this posted by the MODERATOR. I assume that I do it by sending to info-unix@sem.brl.mil? I am developing code on a Sun workstation SunOS 4.03. I am trying to provide an emulation of a target system that will run on a Sun. Consequently, I do not wish to modify the base code. I have two Unix processes. Process 1 mallocs some memory space. Then process 1 communicates this location to process 2. Process 2 will then copy some data into process 1 memory space. To accomplish this action I believe that I need the ability to map process 1's memory map into process 2 and vice versa. This could be something like: PROCESS 1 PROCESS 2 ========= ========= 00000000 00000000 . . . . . . Process 1's space Process 2's space 00300000 00500000 01000000 01000000 . . . . . . Process 2's space Process 1's space 01500000 01300000 Constraints 1. I cannot use shared memory (shmget...etc), because I would like the whole process to be mapped and it implies I would have to change the target code. 2. I am using lightweight processes to provide tasking within each process and I cannot use them to provide this capability. Also, I would like to build the original processes with a separate link. I don't believe that the SunOS supports such a concept, but I also do not believe it is impossible to accomplish. Has anyone any experience with this idea? Thanks,