Initialize shared-memory
- Parameters:
-
| keyfile | seed for generating unique IPC key |
| keyid | seed for generating unique IPC key |
| size | size of shared memory |
| ifexistdestroy | set to true to destroy if shared-memory already exists |
- Returns:
- non-negative shared memory identifier if successful, otherwise returns -1
Definition at line 87 of file qShm.c.