6ec71e9253
LogTimes has evolved from being simply a store of the last timestamp that each reader has read to being a class representing an individual reader thread, including the thread function, so name it appropriately. Test: logging unit tests Change-Id: I6914824376a6ff1f7509e657fa4dc044ead62954
92 lines
2.9 KiB
C++
92 lines
2.9 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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#pragma once
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#include <pthread.h>
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#include <sys/socket.h>
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#include <sys/types.h>
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#include <time.h>
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#include <list>
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#include <memory>
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#include <log/log.h>
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#include <sysutils/SocketClient.h>
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typedef unsigned int log_mask_t;
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class LogReader;
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class LogBufferElement;
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class LogReaderThread {
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static pthread_mutex_t timesLock;
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bool mRelease = false;
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bool leadingDropped;
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pthread_cond_t threadTriggeredCondition;
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pthread_t mThread;
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LogReader& mReader;
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static void* threadStart(void* me);
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const log_mask_t mLogMask;
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const pid_t mPid;
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unsigned int skipAhead[LOG_ID_MAX];
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pid_t mLastTid[LOG_ID_MAX];
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unsigned long mCount;
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unsigned long mTail;
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unsigned long mIndex;
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public:
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LogReaderThread(LogReader& reader, SocketClient* client, bool non_block, unsigned long tail,
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log_mask_t log_mask, pid_t pid, log_time start_time, uint64_t sequence,
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uint64_t timeout, bool privileged, bool can_read_security_logs);
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SocketClient* mClient;
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log_time mStartTime;
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uint64_t mStart;
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struct timespec mTimeout; // CLOCK_MONOTONIC based timeout used for log wrapping.
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const bool mNonBlock;
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// Protect List manipulations
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static void wrlock() { pthread_mutex_lock(×Lock); }
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static void rdlock() { pthread_mutex_lock(×Lock); }
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static void unlock() { pthread_mutex_unlock(×Lock); }
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bool startReader_Locked();
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void triggerReader_Locked() { pthread_cond_signal(&threadTriggeredCondition); }
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void triggerSkip_Locked(log_id_t id, unsigned int skip) { skipAhead[id] = skip; }
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void cleanSkip_Locked();
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void release_Locked() {
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// gracefully shut down the socket.
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shutdown(mClient->getSocket(), SHUT_RDWR);
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mRelease = true;
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pthread_cond_signal(&threadTriggeredCondition);
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}
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bool isWatching(log_id_t id) const { return mLogMask & (1 << id); }
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bool isWatchingMultiple(log_mask_t log_mask) const { return mLogMask & log_mask; }
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// flushTo filter callbacks
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static int FilterFirstPass(const LogBufferElement* element, void* me);
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static int FilterSecondPass(const LogBufferElement* element, void* me);
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private:
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bool privileged_;
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bool can_read_security_logs_;
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};
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typedef std::list<std::unique_ptr<LogReaderThread>> LastLogTimes;
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