/* Copyright (c) 2019 - 2020 The Linux Foundation. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are
* met:
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * Redistributions in binary form must reproduce the above
* copyright notice, this list of conditions and the following
* disclaimer in the documentation and/or other materials provided
* with the distribution.
* * Neither the name of The Linux Foundation, nor the names of its
* contributors may be used to endorse or promote products derived
* from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED "AS IS" AND ANY EXPRESS OR IMPLIED
* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT
* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS
* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
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* IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
#include "LogBuffer.h"
#ifdef USE_GLIB
#include <execinfo.h>
#endif
#ifdef LOG_TAG
#undef LOG_TAG
#endif
#define LOG_TAG "LocSvc_LogBuffer"
namespace loc_util {
LogBuffer* LogBuffer::mInstance;
struct sigaction LogBuffer::mOriSigAction[NSIG];
struct sigaction LogBuffer::mNewSigAction;
mutex LogBuffer::sLock;
LogBuffer* LogBuffer::getInstance() {
if (mInstance == nullptr) {
lock_guard<mutex> guard(sLock);
if (mInstance == nullptr) {
mInstance = new LogBuffer();
}
}
return mInstance;
}
LogBuffer::LogBuffer(): mLogList(TOTAL_LOG_LEVELS),
mConfigVec(TOTAL_LOG_LEVELS, ConfigsInLevel(TIME_DEPTH_THRESHOLD_MINIMAL_IN_SEC,
MAXIMUM_NUM_IN_LIST, 0)) {
loc_param_s_type log_buff_config_table[] =
{
{"E_LEVEL_TIME_DEPTH", &mConfigVec[0].mTimeDepthThres, NULL, 'n'},
{"E_LEVEL_MAX_CAPACITY", &mConfigVec[0].mMaxNumThres, NULL, 'n'},
{"W_LEVEL_TIME_DEPTH", &mConfigVec[1].mTimeDepthThres, NULL, 'n'},
{"W_LEVEL_MAX_CAPACITY", &mConfigVec[1].mMaxNumThres, NULL, 'n'},
{"I_LEVEL_TIME_DEPTH", &mConfigVec[2].mTimeDepthThres, NULL, 'n'},
{"I_LEVEL_MAX_CAPACITY", &mConfigVec[2].mMaxNumThres, NULL, 'n'},
{"D_LEVEL_TIME_DEPTH", &mConfigVec[3].mTimeDepthThres, NULL, 'n'},
{"D_LEVEL_MAX_CAPACITY", &mConfigVec[3].mMaxNumThres, NULL, 'n'},
{"V_LEVEL_TIME_DEPTH", &mConfigVec[4].mTimeDepthThres, NULL, 'n'},
{"V_LEVEL_MAX_CAPACITY", &mConfigVec[4].mMaxNumThres, NULL, 'n'},
};
loc_read_conf(LOC_PATH_GPS_CONF_STR, log_buff_config_table,
sizeof(log_buff_config_table)/sizeof(log_buff_config_table[0]));
registerSignalHandler();
}
void LogBuffer::append(string& data, int level, uint64_t timestamp) {
lock_guard<mutex> guard(mLock);
pair<uint64_t, string> item(timestamp, data);
mLogList.append(item, level);
mConfigVec[level].mCurrentSize++;
while ((timestamp - mLogList.front(level).first) > mConfigVec[level].mTimeDepthThres ||
mConfigVec[level].mCurrentSize > mConfigVec[level].mMaxNumThres) {
mLogList.pop(level);
mConfigVec[level].mCurrentSize--;
}
}
//Dump the log buffer of specific level, level = -1 to dump all the levels in log buffer.
void LogBuffer::dump(std::function<void(stringstream&)> log, int level) {
lock_guard<mutex> guard(mLock);
list<pair<pair<uint64_t, string>, int>> li;
if (-1 == level) {
li = mLogList.dump();
} else {
li = mLogList.dump(level);
}
ALOGE("Begining of dump, buffer size: %d", (int)li.size());
stringstream ln;
ln << "dump log buffer, level[" << level << "]" << ", buffer size: " << li.size() << endl;
log(ln);
for_each (li.begin(), li.end(), [&, this](const pair<pair<uint64_t, string>, int> &item){
stringstream line;
line << "["<<item.first.first << "] ";
line << "Level " << mLevelMap[item.second] << ": ";
line << item.first.second << endl;
if (log != nullptr) {
log(line);
}
});
ALOGE("End of dump");
}
void LogBuffer::dumpToAdbLogcat() {
dump([](stringstream& line){
ALOGE("%s", line.str().c_str());
});
}
void LogBuffer::dumpToLogFile(string filePath) {
ALOGE("Dump GPS log buffer to file: %s", filePath.c_str());
fstream s;
s.open(filePath, std::fstream::out | std::fstream::app);
dump([&s](stringstream& line){
s << line.str();
});
s.close();
}
void LogBuffer::flush() {
mLogList.flush();
}
void LogBuffer::registerSignalHandler() {
ALOGE("Singal handler registered");
mNewSigAction.sa_sigaction = &LogBuffer::signalHandler;
mNewSigAction.sa_flags = SA_SIGINFO | SA_RESTART;
sigemptyset(&mNewSigAction.sa_mask);
sigaction(SIGINT, &mNewSigAction, &mOriSigAction[SIGINT]);
sigaction(SIGKILL, &mNewSigAction, &mOriSigAction[SIGKILL]);
sigaction(SIGSEGV, &mNewSigAction, &mOriSigAction[SIGSEGV]);
sigaction(SIGABRT, &mNewSigAction, &mOriSigAction[SIGABRT]);
sigaction(SIGTRAP, &mNewSigAction, &mOriSigAction[SIGTRAP]);
sigaction(SIGUSR1, &mNewSigAction, &mOriSigAction[SIGUSR1]);
}
void LogBuffer::signalHandler(const int code, siginfo_t *const si, void *const sc) {
ALOGE("[Gnss Log buffer]Singal handler, signal ID: %d", code);
#ifdef USE_GLIB
int nptrs;
void *buffer[100];
char **strings;
nptrs = backtrace(buffer, sizeof(buffer)/sizeof(*buffer));
strings = backtrace_symbols(buffer, nptrs);
if (strings != NULL) {
timespec tv;
clock_gettime(CLOCK_BOOTTIME, &tv);
uint64_t elapsedTime = (uint64_t)tv.tv_sec + (uint64_t)tv.tv_nsec/1000000000;
for (int i = 0; i < nptrs; i++) {
string s(strings[i]);
mInstance->append(s, 0, elapsedTime);
}
}
#endif
//Dump the log buffer to adb logcat
mInstance->dumpToAdbLogcat();
//Dump the log buffer to file
time_t now = time(NULL);
struct tm *curr_time = localtime(&now);
char path[50];
snprintf(path, 50, LOG_BUFFER_FILE_PATH "gpslog_%d%d%d-%d%d%d.log",
(1900 + curr_time->tm_year), ( 1 + curr_time->tm_mon), curr_time->tm_mday,
curr_time->tm_hour, curr_time->tm_min, curr_time->tm_sec);
mInstance->dumpToLogFile(path);
//Process won't be terminated if SIGUSR1 is recieved
if (code != SIGUSR1) {
mOriSigAction[code].sa_sigaction(code, si, sc);
}
}
}
