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50 lines
1.4 KiB
50 lines
1.4 KiB
/*
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* Copyright (C) 2020 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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//#define LOG_NDEBUG 0
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#define LOG_TAG "MetricsCleaner"
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#include <utils/Log.h>
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#include "cleaner.h"
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namespace android::mediametrics {
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// place time into buckets at 0,1,2,4,8,16,32 seconds and then at minute boundaries.
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// time is rounded up to the next boundary.
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//
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int64_t bucket_time_minutes(int64_t in_millis) {
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const int64_t SEC_TO_MS = 1000;
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const int64_t MIN_TO_MS = (60 * SEC_TO_MS);
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if (in_millis <= 0) {
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return 0;
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}
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if (in_millis <= 32 * SEC_TO_MS) {
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for (int sec = 1; sec <= 32; sec *= 2) {
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if (in_millis <= sec * SEC_TO_MS) {
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return sec * SEC_TO_MS;
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}
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}
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}
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/* up to next 1 minute boundary */
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int64_t minutes = (in_millis + MIN_TO_MS - 1) / MIN_TO_MS;
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in_millis = minutes * MIN_TO_MS;
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return in_millis;
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}
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} // namespace android::mediametrics
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