28   FdSync *sync;  member
99   if (d->sync) {  in init()
100     unref(thr, pc, d->sync);  in init()
101     d->sync = 0;  in init()
106     d->sync = s;  in init()
109     d->sync = &fdctx.globsync;  in init()
164   FdSync *s = d->sync;  in FdAcquire()
175   FdSync *s = d->sync;  in FdRelease()
212   unref(thr, pc, d->sync);  in FdClose()
213   d->sync = 0;  in FdClose()
233   init(thr, pc, newfd, ref(od->sync), write);  in FdDup()