1 /* 2 * Copyright (C) 2012-2014 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 #pragma once 18 19 #include <stdint.h> 20 #include <stdlib.h> 21 #include <sys/types.h> 22 23 #include <log/log.h> 24 25 #include "LogWriter.h" 26 27 #include "LogStatistics.h" 28 29 class __attribute__((packed)) LogBufferElement { 30 public: 31 LogBufferElement(log_id_t log_id, log_time realtime, uid_t uid, pid_t pid, pid_t tid, 32 uint64_t sequence, const char* msg, uint16_t len); 33 LogBufferElement(const LogBufferElement& elem); 34 LogBufferElement(LogBufferElement&& elem) noexcept; 35 ~LogBufferElement(); 36 37 uint32_t GetTag() const; 38 39 bool FlushTo(LogWriter* writer); 40 41 LogStatisticsElement ToLogStatisticsElement() const; 42 log_id()43 log_id_t log_id() const { return static_cast<log_id_t>(log_id_); } uid()44 uid_t uid() const { return uid_; } pid()45 pid_t pid() const { return pid_; } tid()46 pid_t tid() const { return tid_; } msg_len()47 uint16_t msg_len() const { return msg_len_; } msg()48 const char* msg() const { return msg_; } sequence()49 uint64_t sequence() const { return sequence_; } realtime()50 log_time realtime() const { return realtime_; } 51 52 private: 53 // sized to match reality of incoming log packets 54 const uint32_t uid_; 55 const uint32_t pid_; 56 const uint32_t tid_; 57 uint64_t sequence_; 58 log_time realtime_; 59 char* msg_; 60 const uint16_t msg_len_; 61 const uint8_t log_id_; 62 }; 63