runtime·xchg64  1242 src/pkg/runtime/proc.c 	if(runtime·xchg64(&runtime·sched.lastpoll, 0) != 0) {
runtime·xchg64   182 src/pkg/runtime/runtime.c 	if(runtime·xchg64(&z64, (3ull<<40)+3) != (2ull<<40)+2)
runtime·xchg64   901 src/pkg/runtime/runtime.h uint64	runtime·xchg64(uint64 volatile*, uint64);