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/*
* Copyright (C) 2016 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#include "RecentEventLogger.h"
#include "SensorServiceUtils.h"
#include <utils/Timers.h>
#include <inttypes.h>
namespace android {
namespace SensorServiceUtil {
namespace {
constexpr size_t LOG_SIZE = 10;
constexpr size_t LOG_SIZE_MED = 30; // debugging for slower sensors
constexpr size_t LOG_SIZE_LARGE = 50; // larger samples for debugging
}// unnamed namespace
RecentEventLogger::RecentEventLogger(int sensorType) :
mSensorType(sensorType), mEventSize(eventSizeBySensorType(mSensorType)),
mRecentEvents(logSizeBySensorType(sensorType)), mMaskData(false),
mIsLastEventCurrent(false) {
// blank
}
void RecentEventLogger::addEvent(const sensors_event_t& event) {
std::lock_guard<std::mutex> lk(mLock);
mRecentEvents.emplace(event);
mIsLastEventCurrent = true;
}
bool RecentEventLogger::isEmpty() const {
return mRecentEvents.size() == 0;
}
void RecentEventLogger::setLastEventStale() {
std::lock_guard<std::mutex> lk(mLock);
mIsLastEventCurrent = false;
}
std::string RecentEventLogger::dump() const {
std::lock_guard<std::mutex> lk(mLock);
//TODO: replace String8 with std::string completely in this function
String8 buffer;
buffer.appendFormat("last %zu events\n", mRecentEvents.size());
int j = 0;
for (int i = mRecentEvents.size() - 1; i >= 0; --i) {
const auto& ev = mRecentEvents[i];
struct tm * timeinfo = localtime(&(ev.mWallTime.tv_sec));
buffer.appendFormat("\t%2d (ts=%.9f, wall=%02d:%02d:%02d.%03d) ",
++j, ev.mEvent.timestamp/1e9, timeinfo->tm_hour, timeinfo->tm_min, timeinfo->tm_sec,
(int) ns2ms(ev.mWallTime.tv_nsec));
// data
if (!mMaskData) {
if (mSensorType == SENSOR_TYPE_STEP_COUNTER) {
buffer.appendFormat("%" PRIu64 ", ", ev.mEvent.u64.step_counter);
} else {
for (size_t k = 0; k < mEventSize; ++k) {
buffer.appendFormat("%.2f, ", ev.mEvent.data[k]);
}
}
} else {
buffer.append("[value masked]");
}
buffer.append("\n");
}
return std::string(buffer.string());
}
void RecentEventLogger::setFormat(std::string format) {
if (format == "mask_data" ) {
mMaskData = true;
} else {
mMaskData = false;
}
}
bool RecentEventLogger::populateLastEventIfCurrent(sensors_event_t *event) const {
std::lock_guard<std::mutex> lk(mLock);
if (mIsLastEventCurrent && mRecentEvents.size()) {
// Index 0 contains the latest event emplace()'ed
*event = mRecentEvents[0].mEvent;
return true;
} else {
return false;
}
}
size_t RecentEventLogger::logSizeBySensorType(int sensorType) {
if (sensorType == SENSOR_TYPE_STEP_COUNTER ||
sensorType == SENSOR_TYPE_SIGNIFICANT_MOTION ||
sensorType == SENSOR_TYPE_ACCELEROMETER ||
sensorType == SENSOR_TYPE_LIGHT) {
return LOG_SIZE_LARGE;
}
if (sensorType == SENSOR_TYPE_PROXIMITY) {
return LOG_SIZE_MED;
}
return LOG_SIZE;
}
RecentEventLogger::SensorEventLog::SensorEventLog(const sensors_event_t& e) : mEvent(e) {
clock_gettime(CLOCK_REALTIME, &mWallTime);
}
} // namespace SensorServiceUtil
} // namespace android