Here's my problem, I am getting a bad access on a shared memory line on my producer/consumer program:
Program received signal EXC_BAD_ACCESS, Could not access memory.
Reason: KERN_INVALID_ADDRESS at address: 0xffffffff
0x00001db0 in main () at Project3.c:120
120 memset(buf, 0, BUFFER_SIZE);
int BUFFER_SIZE = 200;
int *buf;
[I]Some code[/I]......
int ShmID=shmget(IPC_PRIVATE, (sizeof(int)*200), 0666 | IPC_CREAT);
buf = shmat(ShmID, 0, 0666);
memset(buf, 0, BUFFER_SIZE);
union semun valsem;
valsem.val = BUFFER_SIZE;
pid_t childpid;
int SemID;
int waiter;
With regular allocaiton, it works well, but with shared memory alocation, it fails.
What could be the problem? Please and thank you!