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_LARGE = 50; // larger samples for debugging
30 }// unnamed namespace
31
RecentEventLogger(int sensorType)32 RecentEventLogger::RecentEventLogger(int sensorType) :
33 mSensorType(sensorType), mEventSize(eventSizeBySensorType(mSensorType)),
34 mRecentEvents(logSizeBySensorType(sensorType)), mMaskData(false) {
35 // blank
36 }
37
addEvent(const sensors_event_t & event)38 void RecentEventLogger::addEvent(const sensors_event_t& event) {
39 std::lock_guard<std::mutex> lk(mLock);
40 mRecentEvents.emplace(event);
41 }
42
isEmpty() const43 bool RecentEventLogger::isEmpty() const {
44 return mRecentEvents.size() == 0;
45 }
46
dump() const47 std::string RecentEventLogger::dump() const {
48 std::lock_guard<std::mutex> lk(mLock);
49
50 //TODO: replace String8 with std::string completely in this function
51 String8 buffer;
52
53 buffer.appendFormat("last %zu events\n", mRecentEvents.size());
54 int j = 0;
55 for (int i = mRecentEvents.size() - 1; i >= 0; --i) {
56 const auto& ev = mRecentEvents[i];
57 struct tm * timeinfo = localtime(&(ev.mWallTime.tv_sec));
58 buffer.appendFormat("\t%2d (ts=%.9f, wall=%02d:%02d:%02d.%03d) ",
59 ++j, ev.mEvent.timestamp/1e9, timeinfo->tm_hour, timeinfo->tm_min, timeinfo->tm_sec,
60 (int) ns2ms(ev.mWallTime.tv_nsec));
61
62 // data
63 if (!mMaskData) {
64 if (mSensorType == SENSOR_TYPE_STEP_COUNTER) {
65 buffer.appendFormat("%" PRIu64 ", ", ev.mEvent.u64.step_counter);
66 } else {
67 for (size_t k = 0; k < mEventSize; ++k) {
68 buffer.appendFormat("%.2f, ", ev.mEvent.data[k]);
69 }
70 }
71 } else {
72 buffer.append("[value masked]");
73 }
74 buffer.append("\n");
75 }
76 return std::string(buffer.string());
77 }
78
setFormat(std::string format)79 void RecentEventLogger::setFormat(std::string format) {
80 if (format == "mask_data" ) {
81 mMaskData = true;
82 } else {
83 mMaskData = false;
84 }
85 }
86
populateLastEvent(sensors_event_t * event) const87 bool RecentEventLogger::populateLastEvent(sensors_event_t *event) const {
88 std::lock_guard<std::mutex> lk(mLock);
89
90 if (mRecentEvents.size()) {
91 // Index 0 contains the latest event emplace()'ed
92 *event = mRecentEvents[0].mEvent;
93 return true;
94 } else {
95 return false;
96 }
97 }
98
99
logSizeBySensorType(int sensorType)100 size_t RecentEventLogger::logSizeBySensorType(int sensorType) {
101 return (sensorType == SENSOR_TYPE_STEP_COUNTER ||
102 sensorType == SENSOR_TYPE_SIGNIFICANT_MOTION ||
103 sensorType == SENSOR_TYPE_ACCELEROMETER ||
104 sensorType == SENSOR_TYPE_LIGHT) ? LOG_SIZE_LARGE : LOG_SIZE;
105 }
106
SensorEventLog(const sensors_event_t & e)107 RecentEventLogger::SensorEventLog::SensorEventLog(const sensors_event_t& e) : mEvent(e) {
108 clock_gettime(CLOCK_REALTIME, &mWallTime);
109 }
110
111 } // namespace SensorServiceUtil
112 } // namespace android
113