124 lines
3.3 KiB
C++
124 lines
3.3 KiB
C++
/*
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* Copyright (C) 2012-2013 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#include <ctype.h>
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#include <poll.h>
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#include <sys/socket.h>
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#include <cutils/sockets.h>
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#include "LogReader.h"
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#include "FlushCommand.h"
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LogReader::LogReader(LogBuffer *logbuf)
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: SocketListener("logdr", true)
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, mLogbuf(*logbuf)
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{ }
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// When we are notified a new log entry is available, inform
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// all of our listening sockets.
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void LogReader::notifyNewLog() {
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FlushCommand command(*this);
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runOnEachSocket(&command);
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}
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bool LogReader::onDataAvailable(SocketClient *cli) {
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char buffer[255];
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int len = read(cli->getSocket(), buffer, sizeof(buffer) - 1);
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if (len <= 0) {
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doSocketDelete(cli);
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return false;
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}
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buffer[len] = '\0';
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unsigned long tail = 0;
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static const char _tail[] = " tail=";
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char *cp = strstr(buffer, _tail);
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if (cp) {
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tail = atol(cp + sizeof(_tail) - 1);
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}
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log_time start(log_time::EPOCH);
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static const char _start[] = " start=";
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cp = strstr(buffer, _start);
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if (cp) {
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// Parse errors will result in current time
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start.strptime(cp + sizeof(_start) - 1, "%s.%q");
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}
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unsigned int logMask = -1;
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static const char _logIds[] = " lids=";
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cp = strstr(buffer, _logIds);
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if (cp) {
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logMask = 0;
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cp += sizeof(_logIds) - 1;
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while (*cp && *cp != '\0') {
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int val = 0;
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while (isdigit(*cp)) {
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val = val * 10 + *cp - '0';
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++cp;
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}
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logMask |= 1 << val;
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if (*cp != ',') {
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break;
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}
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++cp;
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}
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}
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pid_t pid = 0;
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static const char _pid[] = " pid=";
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cp = strstr(buffer, _pid);
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if (cp) {
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pid = atol(cp + sizeof(_pid) - 1);
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}
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bool nonBlock = false;
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if (strncmp(buffer, "dumpAndClose", 12) == 0) {
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nonBlock = true;
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}
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// Convert realtime to monotonic time
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if (start != log_time::EPOCH) {
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log_time real(CLOCK_REALTIME);
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log_time monotonic(CLOCK_MONOTONIC);
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real -= monotonic; // I know this is not 100% accurate
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start -= real;
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}
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if (start == log_time::EPOCH) {
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start = LogTimeEntry::EPOCH;
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}
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FlushCommand command(*this, nonBlock, tail, logMask, pid, start);
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command.runSocketCommand(cli);
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return true;
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}
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void LogReader::doSocketDelete(SocketClient *cli) {
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LastLogTimes × = mLogbuf.mTimes;
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LogTimeEntry::lock();
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LastLogTimes::iterator it = times.begin();
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while(it != times.end()) {
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LogTimeEntry *entry = (*it);
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if (entry->mClient == cli) {
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times.erase(it);
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entry->release_Locked();
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break;
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}
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it++;
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}
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LogTimeEntry::unlock();
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}
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