Shared Memory, shared struct between multiple processes

Shared Memory Structure, multi-thread multi-process sharing.

# Define file_msg_key0xc54be5 // <file Message key. # define proc_mem_size 4096*3 # define max_1__proc9 # define ipc_creat 00001000/* create if key is nonexistent */static int mfileid, qfileid; static void * psharemem; int psharememinit (INT key) {int mid = shmget (Key, proc_mem_size * max_0000_proc, ipc_creat | 0660); printf ("shared memory size % d \ n", proc_mem_size * max_0000_proc); If (mid <0) mid = shmget (Key, 0, 0); printf ("Shared Memory ID: % d \ n", mid); If (mid <0) Return-1; return mid;} int readsysinfocfg () {mfileid = psharememinit (file_msg_key); If (mfileid <0) Return-1; psharemem = shmat (mfileid, 0, 0 ); sysinfo * psysinfo = (sysinfo *) psharemem ;}

Shared Memory, shared struct between multiple processes