85  * @ta:  the TimedAverage structure
88 static TimedAverageWindow *current_window(TimedAverage *ta)  in current_window()  argument
90      return &ta->windows[ta->current];  in current_window()
95  * @ta:         the TimedAverage structure
99 void timed_average_init(TimedAverage *ta, QEMUClockType clock_type,  in timed_average_init()  argument
105      * the interval [ta->period/2,ta->period). By adjusting the  in timed_average_init()
109     ta->period = (uint64_t) period * 4 / 3;  in timed_average_init()
110     ta->clock_type = clock_type;  in timed_average_init()
111     ta->current = 0;  in timed_average_init()
113     window_reset(&ta->windows[0]);  in timed_average_init()
114     window_reset(&ta->windows[1]);  in timed_average_init()
117     ta->windows[0].expiration = now + ta->period / 2;  in timed_average_init()
118     ta->windows[1].expiration = now + ta->period;  in timed_average_init()
124  * @ta: the TimedAverage structure
128 static void check_expirations(TimedAverage *ta, uint64_t *elapsed)  in check_expirations()  argument
130     int64_t now = qemu_clock_get_ns(ta->clock_type);  in check_expirations()
133     assert(ta->period != 0);  in check_expirations()
137         TimedAverageWindow *w = &ta->windows[i];  in check_expirations()
140             update_expiration(w, now, ta->period);  in check_expirations()
144     /* Make ta->current point to the oldest window */  in check_expirations()
145     if (ta->windows[0].expiration < ta->windows[1].expiration) {  in check_expirations()
146         ta->current = 0;  in check_expirations()
148         ta->current = 1;  in check_expirations()
153         int64_t remaining = ta->windows[ta->current].expiration - now;  in check_expirations()
154         *elapsed = ta->period - remaining;  in check_expirations()
160  * @ta:    the TimedAverage structure
163 void timed_average_account(TimedAverage *ta, uint64_t value)  in timed_average_account()  argument
166     check_expirations(ta, NULL);  in timed_average_account()
170         TimedAverageWindow *w = &ta->windows[i];  in timed_average_account()
187  * @ta:  the TimedAverage structure
190 uint64_t timed_average_min(TimedAverage *ta)  in timed_average_min()  argument
193     check_expirations(ta, NULL);  in timed_average_min()
194     w = current_window(ta);  in timed_average_min()
200  * @ta:  the TimedAverage structure
203 uint64_t timed_average_avg(TimedAverage *ta)  in timed_average_avg()  argument
206     check_expirations(ta, NULL);  in timed_average_avg()
207     w = current_window(ta);  in timed_average_avg()
213  * @ta:  the TimedAverage structure
216 uint64_t timed_average_max(TimedAverage *ta)  in timed_average_max()  argument
218     check_expirations(ta, NULL);  in timed_average_max()
219     return current_window(ta)->max;  in timed_average_max()
223  * @ta:      the TimedAverage structure
227 uint64_t timed_average_sum(TimedAverage *ta, uint64_t *elapsed)  in timed_average_sum()  argument
230     check_expirations(ta, elapsed);  in timed_average_sum()
231     w = current_window(ta);  in timed_average_sum()