56 lines
1.9 KiB
C++
56 lines
1.9 KiB
C++
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/*
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* Copyright (C) 2022 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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#include "chre_host/time_syncer.h"
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#include <chre_host/host_protocol_host.h>
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#include "chre_host/log.h"
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namespace android::chre {
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// TODO(b/247124878): Can we add a static assert to make sure these functions
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// are not called when mConnection->isTimeSyncNeeded() returns false?
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bool TimeSyncer::sendTimeSync() {
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if (!mConnection->isTimeSyncNeeded()) {
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LOGW("Platform doesn't require time sync. Ignore the request.");
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return true;
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}
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int64_t timeOffsetUs = 0;
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if (!mConnection->getTimeOffset(&timeOffsetUs)) {
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LOGE("Failed to get time offset.");
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return false;
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}
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flatbuffers::FlatBufferBuilder builder(64);
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// clientId doesn't matter for time sync request so the default id is used.
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HostProtocolHost::encodeTimeSyncMessage(builder, timeOffsetUs);
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return mConnection->sendMessage(builder.GetBufferPointer(),
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builder.GetSize());
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}
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bool TimeSyncer::sendTimeSyncWithRetry(size_t numOfRetries,
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useconds_t retryDelayUs) {
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if (!mConnection->isTimeSyncNeeded()) {
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LOGW("Platform doesn't require time sync. Ignore the request.");
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return true;
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}
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bool success = false;
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while (!success && (numOfRetries-- > 0)) {
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success = sendTimeSync();
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if (!success) {
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usleep(retryDelayUs);
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}
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}
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return success;
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}
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} // namespace android::chre
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