dtrace_hrestime
lock_set(&dtrace_hrestime[i].dthr_lock);
dtrace_hrestime[i].dthr_hrestime = tmp.dthr_hrestime;
dtrace_hrestime[i].dthr_adj = tmp.dthr_adj;
dtrace_hrestime[i].dthr_hrtime = tmp.dthr_hrtime;
dtrace_hrestime[i].dthr_lock++;
snap.dthr_lock = dtrace_hrestime[i].dthr_lock;
snap.dthr_hrestime = dtrace_hrestime[i].dthr_hrestime;
snap.dthr_hrtime = dtrace_hrestime[i].dthr_hrtime;
snap.dthr_adj = dtrace_hrestime[i].dthr_adj;
if ((snap.dthr_lock & ~1) == dtrace_hrestime[i].dthr_lock)
static dtrace_hrestime_t dtrace_hrestime[2];