osfmk/ipc/ipc_right.c

257  *			generating immediate notif. would overflow urefs.
369 			mach_port_urefs_t urefs = IE_BITS_UREFS(entry->ie_bits);
371 			assert(urefs > 0);
373 			if (MACH_PORT_UREFS_OVERFLOW(urefs, 1)) {
380 			(entry->ie_bits)++; /* increment urefs */
848 			entry->ie_bits = bits-1; /* decrement urefs */
934 			entry->ie_bits = bits-1; /* decrement urefs */
975 			entry->ie_bits = bits-1; /* decrement urefs */
1208 		mach_port_urefs_t urefs;
1230 		urefs = IE_BITS_UREFS(bits);
1231 		if (MACH_PORT_UREFS_UNDERFLOW(urefs, delta))
1233 		if (MACH_PORT_UREFS_OVERFLOW(urefs, delta))
1236 		if ((urefs + delta) == 0) {
1248 		mach_port_urefs_t urefs;
1256 		/* maximum urefs for send is MACH_PORT_UREFS_MAX-1 */
1269 		urefs = IE_BITS_UREFS(bits);
1270 		if (MACH_PORT_UREFS_UNDERFLOW(urefs, delta)) {
1274 		if (MACH_PORT_UREFS_OVERFLOW(urefs+1, delta)) {
1279 		if ((urefs + delta) == 0) {
1845 			entry->ie_bits = bits-1; /* decrement urefs */
1944 	entry->ie_bits = bits-1; /* decrement urefs */
2002 			entry->ie_bits = bits+1; /* increment urefs */
2014 			entry->ie_bits = bits+1; /* increment urefs */
2057 	mach_port_urefs_t urefs;
2074 	urefs = IE_BITS_UREFS(bits);
2075 	if (urefs < 2)
2099 	if (urefs == 2) {
2126 		entry->ie_bits = bits-2; /* decrement urefs */
2232 			mach_port_urefs_t urefs = IE_BITS_UREFS(bits);
2235 			assert(urefs > 0);
2236 			assert(urefs < MACH_PORT_UREFS_MAX);
2238 			if (urefs+1 == MACH_PORT_UREFS_MAX) {
2240 					/* leave urefs pegged to maximum */