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AsyncLogging.h
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AsyncLogging.h
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//@author Jingyu Tong
//@email: jingyutong0806@gmail.com
#ifndef ASYNCLOGGING_H_
#define ASYNCLOGGING_H_
#include "base/CountDownLatch.h"
#include "base/MutexLock.h"
#include "base/Thread.h"
#include "base/noncopyable.h"
#include "LogStream.h"
#include <functional>
#include <string>
#include <vector>
class AsyncLogging : noncopyable {
public:
AsyncLogging(const std::string base_name, int flush_interval = 2);
~AsyncLogging() {
if(!running_)
stop();
}
void append(const char* logline, int len);
void start() {
running_ = true;
thread_.start();
latch_.wait();
}
void stop() {
running_ = false;
cond_.notify();
thread_.join();
}
private:
void threadFunc(); //线程函数
typedef FixedBuffer<kLargeBuffer> Buffer;
typedef std::unique_ptr<Buffer> BufferPtr;
typedef std::vector<BufferPtr> BufferVector;
int flush_interval_;
bool running_;
std::string base_name_;
Thread thread_;
MutexLock mutex_;
Condition cond_;
BufferPtr cur_buffer_;
BufferPtr next_buffer_;
BufferVector buffers_;
CountDownLatch latch_;
};
#endif