Variables starting with `p' in osfmk/ipc

• port_alloc_queue osfmk/ipc/ipc_port.c:1171
• port_callers osfmk/ipc/ipc_port.c:1660
• PORT_MAX osfmk/ipc/ipc_init.c:315
• port_spaces osfmk/ipc/ipc_port.c:1662
• port_threads osfmk/ipc/ipc_port.c:1661