1 /*
2 * Copyright (C) 2016 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 #include "RecentEventLogger.h"
18 #include "SensorServiceUtils.h"
19
20 #include <utils/Timers.h>
21
22 #include <inttypes.h>
23
24 namespace android {
25 namespace SensorServiceUtil {
26
27 namespace {
28 constexpr size_t LOG_SIZE = 10;
29 constexpr size_t LOG_SIZE_MED = 30; // debugging for slower sensors
30 constexpr size_t LOG_SIZE_LARGE = 50; // larger samples for debugging
31 }// unnamed namespace
32
RecentEventLogger(int sensorType)33 RecentEventLogger::RecentEventLogger(int sensorType) :
34 mSensorType(sensorType), mEventSize(eventSizeBySensorType(mSensorType)),
35 mRecentEvents(logSizeBySensorType(sensorType)), mMaskData(false),
36 mIsLastEventCurrent(false) {
37 // blank
38 }
39
addEvent(const sensors_event_t & event)40 void RecentEventLogger::addEvent(const sensors_event_t& event) {
41 std::lock_guard<std::mutex> lk(mLock);
42 mRecentEvents.emplace(event);
43 mIsLastEventCurrent = true;
44 }
45
isEmpty() const46 bool RecentEventLogger::isEmpty() const {
47 return mRecentEvents.size() == 0;
48 }
49
setLastEventStale()50 void RecentEventLogger::setLastEventStale() {
51 std::lock_guard<std::mutex> lk(mLock);
52 mIsLastEventCurrent = false;
53 }
54
dump() const55 std::string RecentEventLogger::dump() const {
56 std::lock_guard<std::mutex> lk(mLock);
57
58 //TODO: replace String8 with std::string completely in this function
59 String8 buffer;
60
61 buffer.appendFormat("last %zu events\n", mRecentEvents.size());
62 int j = 0;
63 for (int i = mRecentEvents.size() - 1; i >= 0; --i) {
64 const auto& ev = mRecentEvents[i];
65 struct tm * timeinfo = localtime(&(ev.mWallTime.tv_sec));
66 buffer.appendFormat("\t%2d (ts=%.9f, wall=%02d:%02d:%02d.%03d) ",
67 ++j, ev.mEvent.timestamp/1e9, timeinfo->tm_hour, timeinfo->tm_min, timeinfo->tm_sec,
68 (int) ns2ms(ev.mWallTime.tv_nsec));
69
70 // data
71 if (!mMaskData) {
72 if (mSensorType == SENSOR_TYPE_STEP_COUNTER) {
73 buffer.appendFormat("%" PRIu64 ", ", ev.mEvent.u64.step_counter);
74 } else {
75 for (size_t k = 0; k < mEventSize; ++k) {
76 buffer.appendFormat("%.2f, ", ev.mEvent.data[k]);
77 }
78 }
79 } else {
80 buffer.append("[value masked]");
81 }
82 buffer.append("\n");
83 }
84 return std::string(buffer.string());
85 }
86
setFormat(std::string format)87 void RecentEventLogger::setFormat(std::string format) {
88 if (format == "mask_data" ) {
89 mMaskData = true;
90 } else {
91 mMaskData = false;
92 }
93 }
94
populateLastEventIfCurrent(sensors_event_t * event) const95 bool RecentEventLogger::populateLastEventIfCurrent(sensors_event_t *event) const {
96 std::lock_guard<std::mutex> lk(mLock);
97
98 if (mIsLastEventCurrent && mRecentEvents.size()) {
99 // Index 0 contains the latest event emplace()'ed
100 *event = mRecentEvents[0].mEvent;
101 return true;
102 } else {
103 return false;
104 }
105 }
106
107
logSizeBySensorType(int sensorType)108 size_t RecentEventLogger::logSizeBySensorType(int sensorType) {
109 if (sensorType == SENSOR_TYPE_STEP_COUNTER ||
110 sensorType == SENSOR_TYPE_SIGNIFICANT_MOTION ||
111 sensorType == SENSOR_TYPE_ACCELEROMETER ||
112 sensorType == SENSOR_TYPE_LIGHT) {
113 return LOG_SIZE_LARGE;
114 }
115 if (sensorType == SENSOR_TYPE_PROXIMITY) {
116 return LOG_SIZE_MED;
117 }
118 return LOG_SIZE;
119 }
120
SensorEventLog(const sensors_event_t & e)121 RecentEventLogger::SensorEventLog::SensorEventLog(const sensors_event_t& e) : mEvent(e) {
122 clock_gettime(CLOCK_REALTIME, &mWallTime);
123 }
124
125 } // namespace SensorServiceUtil
126 } // namespace android
127