1 /*
2 * Copyright (C) 2020 The Android Open Source Project
3 *
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
7 *
8 * http://www.apache.org/licenses/LICENSE-2.0
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
15 */
16
17 //#define LOG_NDEBUG 0
18 #define LOG_TAG "MetricsCleaner"
19 #include <utils/Log.h>
20
21 #include "cleaner.h"
22
23 namespace android::mediametrics {
24
25 // place time into buckets at 0,1,2,4,8,16,32 seconds and then at minute boundaries.
26 // time is rounded up to the next boundary.
27 //
bucket_time_minutes(int64_t in_millis)28 int64_t bucket_time_minutes(int64_t in_millis) {
29
30 const int64_t SEC_TO_MS = 1000;
31 const int64_t MIN_TO_MS = (60 * SEC_TO_MS);
32
33 if (in_millis <= 0) {
34 return 0;
35 }
36 if (in_millis <= 32 * SEC_TO_MS) {
37 for (int sec = 1; sec <= 32; sec *= 2) {
38 if (in_millis <= sec * SEC_TO_MS) {
39 return sec * SEC_TO_MS;
40 }
41 }
42 }
43 /* up to next 1 minute boundary */
44 int64_t minutes = (in_millis + MIN_TO_MS - 1) / MIN_TO_MS;
45 in_millis = minutes * MIN_TO_MS;
46 return in_millis;
47 }
48
49 } // namespace android::mediametrics
50