1 /* Copyright (c) 2019 The Linux Foundation. All rights reserved.
2 *
3 * Redistribution and use in source and binary forms, with or without
4 * modification, are permitted provided that the following conditions are
5 * met:
6 * * Redistributions of source code must retain the above copyright
7 * notice, this list of conditions and the following disclaimer.
8 * * Redistributions in binary form must reproduce the above
9 * copyright notice, this list of conditions and the following
10 * disclaimer in the documentation and/or other materials provided
11 * with the distribution.
12 * * Neither the name of The Linux Foundation, nor the names of its
13 * contributors may be used to endorse or promote products derived
14 * from this software without specific prior written permission.
15 *
16 * THIS SOFTWARE IS PROVIDED "AS IS" AND ANY EXPRESS OR IMPLIED
17 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
18 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT
19 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS
20 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
21 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
22 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
23 * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
24 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE
25 * OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN
26 * IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
27 *
28 */
29
30 #include "LogBuffer.h"
31 #include <utils/Log.h>
32
33 #define LOG_TAG "LocSvc_LogBuffer"
34
35 namespace loc_util {
36
37 LogBuffer* LogBuffer::mInstance;
38 struct sigaction LogBuffer::mOriSigAction[NSIG];
39 struct sigaction LogBuffer::mNewSigAction;
40 mutex LogBuffer::sLock;
41
getInstance()42 LogBuffer* LogBuffer::getInstance() {
43 if (mInstance == nullptr) {
44 lock_guard<mutex> guard(sLock);
45 if (mInstance == nullptr) {
46 mInstance = new LogBuffer();
47 }
48 }
49 return mInstance;
50 }
51
LogBuffer()52 LogBuffer::LogBuffer(): mLogList(TOTAL_LOG_LEVELS),
53 mConfigVec(TOTAL_LOG_LEVELS, ConfigsInLevel(TIME_DEPTH_THRESHOLD_MINIMAL_IN_SEC,
54 MAXIMUM_NUM_IN_LIST, 0)) {
55 loc_param_s_type log_buff_config_table[] =
56 {
57 {"E_LEVEL_TIME_DEPTH", &mConfigVec[0].mTimeDepthThres, NULL, 'n'},
58 {"E_LEVEL_MAX_CAPACITY", &mConfigVec[0].mMaxNumThres, NULL, 'n'},
59 {"W_LEVEL_TIME_DEPTH", &mConfigVec[1].mTimeDepthThres, NULL, 'n'},
60 {"W_LEVEL_MAX_CAPACITY", &mConfigVec[1].mMaxNumThres, NULL, 'n'},
61 {"I_LEVEL_TIME_DEPTH", &mConfigVec[2].mTimeDepthThres, NULL, 'n'},
62 {"I_LEVEL_MAX_CAPACITY", &mConfigVec[2].mMaxNumThres, NULL, 'n'},
63 {"D_LEVEL_TIME_DEPTH", &mConfigVec[3].mTimeDepthThres, NULL, 'n'},
64 {"D_LEVEL_MAX_CAPACITY", &mConfigVec[3].mMaxNumThres, NULL, 'n'},
65 {"V_LEVEL_TIME_DEPTH", &mConfigVec[4].mTimeDepthThres, NULL, 'n'},
66 {"V_LEVEL_MAX_CAPACITY", &mConfigVec[4].mMaxNumThres, NULL, 'n'},
67 };
68 loc_read_conf(LOC_PATH_GPS_CONF_STR, log_buff_config_table,
69 sizeof(log_buff_config_table)/sizeof(log_buff_config_table[0]));
70 registerSignalHandler();
71 }
72
append(string & data,int level,uint64_t timestamp)73 void LogBuffer::append(string& data, int level, uint64_t timestamp) {
74 lock_guard<mutex> guard(mLock);
75 pair<uint64_t, string> item(timestamp, data);
76 mLogList.append(item, level);
77 mConfigVec[level].mCurrentSize++;
78
79 while ((timestamp - mLogList.front(level).first) > mConfigVec[level].mTimeDepthThres ||
80 mConfigVec[level].mCurrentSize > mConfigVec[level].mMaxNumThres) {
81 mLogList.pop(level);
82 mConfigVec[level].mCurrentSize--;
83 }
84 }
85
86 //Dump the log buffer of specific level, level = -1 to dump all the levels in log buffer.
dump(std::function<void (stringstream &)> log,int level)87 void LogBuffer::dump(std::function<void(stringstream&)> log, int level) {
88 lock_guard<mutex> guard(mLock);
89 list<pair<pair<uint64_t, string>, int>> li;
90 if (-1 == level) {
91 li = mLogList.dump();
92 } else {
93 li = mLogList.dump(level);
94 }
95 ALOGE("Begining of dump, buffer size: %d", (int)li.size());
96 stringstream ln;
97 ln << "dump log buffer, level[" << level << "]" << ", buffer size: " << li.size() << endl;
98 log(ln);
99 for_each (li.begin(), li.end(), [&, this](const pair<pair<uint64_t, string>, int> &item){
100 stringstream line;
101 line << "["<<item.first.first << "] ";
102 line << "Level " << mLevelMap[item.second] << ": ";
103 line << item.first.second << endl;
104 if (log != nullptr) {
105 log(line);
106 }
107 });
108 ALOGE("End of dump");
109 }
110
dumpToAdbLogcat()111 void LogBuffer::dumpToAdbLogcat() {
112 dump([](stringstream& line){
113 ALOGE("%s", line.str().c_str());
114 });
115 }
116
dumpToLogFile(string filePath)117 void LogBuffer::dumpToLogFile(string filePath) {
118 ALOGE("Dump GPS log buffer to file: %s", filePath.c_str());
119 fstream s;
120 s.open(filePath, std::fstream::out | std::fstream::app);
121 dump([&s](stringstream& line){
122 s << line.str();
123 });
124 s.close();
125 }
126
flush()127 void LogBuffer::flush() {
128 mLogList.flush();
129 }
130
registerSignalHandler()131 void LogBuffer::registerSignalHandler() {
132 ALOGE("Singal handler registered");
133 mNewSigAction.sa_sigaction = &LogBuffer::signalHandler;
134 mNewSigAction.sa_flags = SA_SIGINFO;
135 sigemptyset(&mNewSigAction.sa_mask);
136
137 sigaction(SIGINT, &mNewSigAction, &mOriSigAction[SIGINT]);
138 sigaction(SIGKILL, &mNewSigAction, &mOriSigAction[SIGKILL]);
139 sigaction(SIGSEGV, &mNewSigAction, &mOriSigAction[SIGSEGV]);
140 sigaction(SIGABRT, &mNewSigAction, &mOriSigAction[SIGABRT]);
141 sigaction(SIGTRAP, &mNewSigAction, &mOriSigAction[SIGTRAP]);
142 sigaction(SIGUSR1, &mNewSigAction, &mOriSigAction[SIGUSR1]);
143 }
144
signalHandler(const int code,siginfo_t * const si,void * const sc)145 void LogBuffer::signalHandler(const int code, siginfo_t *const si, void *const sc) {
146 ALOGE("[Gnss Log buffer]Singal handler, signal ID: %d", code);
147
148 //Dump the log buffer to adb logcat
149 mInstance->dumpToAdbLogcat();
150
151 //Dump the log buffer to file
152 time_t now = time(NULL);
153 struct tm *curr_time = localtime(&now);
154 char path[50];
155 snprintf(path, 50, LOG_BUFFER_FILE_PATH "gpslog_%d%d%d-%d%d%d.log",
156 (1900 + curr_time->tm_year), ( 1 + curr_time->tm_mon), curr_time->tm_mday,
157 curr_time->tm_hour, curr_time->tm_min, curr_time->tm_sec);
158
159 mInstance->dumpToLogFile(path);
160
161 //Process won't be terminated if SIGUSR1 is recieved
162 if (code != SIGUSR1) {
163 mOriSigAction[code].sa_sigaction(code, si, sc);
164 }
165 }
166
167 }
168