bsd/kern/kern_proc.c

995 	pg = proc_pgrp(parent);
1025 	mypgrp = proc_pgrp(p);
1266 	hispg = proc_pgrp(p);
1300 		hispgrp = proc_pgrp(parent);
2359 	pg = proc_pgrp(p);
2390 /* cannot use proc_pgrp as it maybe stalled */
2402 		(void)msleep(&p->p_pgrpid, proc_list_mlock, 0, "proc_pgrp", 0);
2497 proc_pgrp(proc_t p)
2507 		(void)msleep(&p->p_pgrpid, proc_list_mlock, 0, "proc_pgrp", 0);
2517 			panic("proc_pgrp: ref being povided for dead pgrp");
2556 		(void)msleep(&p->p_pgrpid, proc_list_mlock, 0, "proc_pgrp", 0);