leveldb源码分析11.html 87 KB

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  152. Linux epoll 模型(含LT 模式和 ET 模式详解)
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  157. socket 的阻塞模式和非阻塞模式
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  162. 非阻塞模式下 send 和 recv 函数的返回值
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  167. 服务器开发通信协议设计介绍
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  171. <a href="../网络编程/TCP协议如何解决粘包、半包问题.html">
  172. TCP 协议如何解决粘包、半包问题
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  176. <a href="../网络编程/网络通信中收发数据的正确姿势.html">
  177. 网络通信中收发数据的正确姿势
  178. </a>
  179. </li>
  180. <li class="chapter " data-level="2.1.10" data-path="../网络编程/服务器端发数据时,如果对端一直不收,怎么办?.html">
  181. <a href="../网络编程/服务器端发数据时,如果对端一直不收,怎么办?.html">
  182. 服务器端发数据时,如果对端一直不收,怎么办?
  183. </a>
  184. </li>
  185. </ul>
  186. </li>
  187. <li class="divider"></li>
  188. <li class="chapter " data-level="3.1" data-path="../程序员必知必会的网络命令/">
  189. <a href="../程序员必知必会的网络命令/">
  190. 程序员必知必会的网络命令
  191. </a>
  192. <ul class="articles">
  193. <li class="chapter " data-level="3.1.1" data-path="../程序员必知必会的网络命令/利用telnet命令发电子邮件.html">
  194. <a href="../程序员必知必会的网络命令/利用telnet命令发电子邮件.html">
  195. 利用telnet命令发电子邮件
  196. </a>
  197. </li>
  198. <li class="chapter " data-level="3.1.2" data-path="../程序员必知必会的网络命令/做Java或者C++开发都应该知道的lsof命令.html">
  199. <a href="../程序员必知必会的网络命令/做Java或者C++开发都应该知道的lsof命令.html">
  200. 做Java或者C++开发都应该知道的lsof命令
  201. </a>
  202. </li>
  203. <li class="chapter " data-level="3.1.3" data-path="../程序员必知必会的网络命令/Linux网络故障排查的瑞士军刀.html">
  204. <a href="../程序员必知必会的网络命令/Linux网络故障排查的瑞士军刀.html">
  205. Linux网络故障排查的瑞士军刀nc命令
  206. </a>
  207. </li>
  208. <li class="chapter " data-level="3.1.4" data-path="../程序员必知必会的网络命令/Linuxtcpdump使用介绍.html">
  209. <a href="../程序员必知必会的网络命令/Linuxtcpdump使用介绍.html">
  210. Linux tcpdump使用详解
  211. </a>
  212. </li>
  213. <li class="chapter " data-level="3.1.5" data-path="../程序员必知必会的网络命令/从抓包的角度分析connect函数的连接过程.html">
  214. <a href="../程序员必知必会的网络命令/从抓包的角度分析connect函数的连接过程.html">
  215. 从抓包的角度分析connect函数的连接过程
  216. </a>
  217. </li>
  218. <li class="chapter " data-level="3.1.6" data-path="../程序员必知必会的网络命令/服务器开发中网络数据分析与故障排查经验漫谈.html">
  219. <a href="../程序员必知必会的网络命令/服务器开发中网络数据分析与故障排查经验漫谈.html">
  220. 服务器开发中网络数据分析与故障排查经验漫谈
  221. </a>
  222. </li>
  223. </ul>
  224. </li>
  225. <li class="header">Part II</li>
  226. <li class="chapter " data-level="4.1" data-path="../高性能服务器框架设计/">
  227. <a href="../高性能服务器框架设计/">
  228. 高性能服务器框架设计
  229. </a>
  230. <ul class="articles">
  231. <li class="chapter " data-level="4.1.1" data-path="../高性能服务器框架设计/主线程与工作线程的分工.html">
  232. <a href="../高性能服务器框架设计/主线程与工作线程的分工.html">
  233. 主线程与工作线程的分工
  234. </a>
  235. </li>
  236. <li class="chapter " data-level="4.1.2" data-path="../高性能服务器框架设计/Reactor模式.html">
  237. <a href="../高性能服务器框架设计/Reactor模式.html">
  238. Reactor模式
  239. </a>
  240. </li>
  241. <li class="chapter " data-level="4.1.3" data-path="../高性能服务器框架设计/实例:一个服务器程序的架构介绍.html">
  242. <a href="../高性能服务器框架设计/实例:一个服务器程序的架构介绍.html">
  243. 实例:一个服务器程序的架构介绍
  244. </a>
  245. </li>
  246. <li class="chapter " data-level="4.1.4" data-path="../高性能服务器框架设计/错误码系统的设计.html">
  247. <a href="../高性能服务器框架设计/错误码系统的设计.html">
  248. 错误码系统的设计
  249. </a>
  250. </li>
  251. <li class="chapter " data-level="4.1.5" data-path="../高性能服务器框架设计/日志系统的设计.html">
  252. <a href="../高性能服务器框架设计/日志系统的设计.html">
  253. 日志系统的设计
  254. </a>
  255. </li>
  256. <li class="chapter " data-level="4.1.6" data-path="../高性能服务器框架设计/如何设计断线自动重连机制.html">
  257. <a href="../高性能服务器框架设计/如何设计断线自动重连机制.html">
  258. 如何设计断线自动重连机制
  259. </a>
  260. </li>
  261. <li class="chapter " data-level="4.1.7" data-path="../高性能服务器框架设计/心跳包机制设计详解.html">
  262. <a href="../高性能服务器框架设计/心跳包机制设计详解.html">
  263. 心跳包机制设计详解
  264. </a>
  265. </li>
  266. <li class="chapter " data-level="4.1.8" data-path="../高性能服务器框架设计/业务数据处理一定要单独开线程吗.html">
  267. <a href="../高性能服务器框架设计/业务数据处理一定要单独开线程吗.html">
  268. 业务数据处理一定要单独开线程吗
  269. </a>
  270. </li>
  271. <li class="chapter " data-level="4.1.9" data-path="../高性能服务器框架设计/C++高性能服务器网络框架设计细节.html">
  272. <a href="../高性能服务器框架设计/C++高性能服务器网络框架设计细节.html">
  273. C++ 高性能服务器网络框架设计细节
  274. </a>
  275. </li>
  276. </ul>
  277. </li>
  278. <li class="divider"></li>
  279. <li class="chapter " data-level="5.1" data-path="../服务器开发案例实战/">
  280. <a href="../服务器开发案例实战/">
  281. 服务器开发案例实战
  282. </a>
  283. <ul class="articles">
  284. <li class="chapter " data-level="5.1.1" data-path="../服务器开发案例实战/从零实现一个http服务器.html">
  285. <a href="../服务器开发案例实战/从零实现一个http服务器.html">
  286. 从零实现一个http服务器
  287. </a>
  288. </li>
  289. <li class="chapter " data-level="5.1.2" data-path="../服务器开发案例实战/从零实现一款12306刷票软件.html">
  290. <a href="../服务器开发案例实战/从零实现一款12306刷票软件.html">
  291. 从零实现一款12306刷票软件
  292. </a>
  293. </li>
  294. <li class="chapter " data-level="5.1.3" data-path="../服务器开发案例实战/从零实现一个邮件收发客户端.html">
  295. <a href="../服务器开发案例实战/从零实现一个邮件收发客户端.html">
  296. 从零实现一个邮件收发客户端
  297. </a>
  298. </li>
  299. <li class="chapter " data-level="5.1.4" data-path="../服务器开发案例实战/从零开发一个WebSocket服务器.html">
  300. <a href="../服务器开发案例实战/从零开发一个WebSocket服务器.html">
  301. 从零开发一个WebSocket服务器
  302. </a>
  303. </li>
  304. <li class="chapter " data-level="5.1.5" data-path="../服务器开发案例实战/1从一款多人联机实时对战游戏开始.html">
  305. <a href="../服务器开发案例实战/1从一款多人联机实时对战游戏开始.html">
  306. 从零学习开源项目系列(一) 从一款多人联机实时对战游戏开始
  307. </a>
  308. </li>
  309. <li class="chapter " data-level="5.1.6" data-path="../服务器开发案例实战/2最后一战概况.html">
  310. <a href="../服务器开发案例实战/2最后一战概况.html">
  311. 从零学习开源项目系列(二) 最后一战概况
  312. </a>
  313. </li>
  314. <li class="chapter " data-level="5.1.7" data-path="../服务器开发案例实战/3CSBattleMgr服务源码研究.html">
  315. <a href="../服务器开发案例实战/3CSBattleMgr服务源码研究.html">
  316. 从零学习开源项目系列(三) CSBattleMgr服务源码研究
  317. </a>
  318. </li>
  319. <li class="chapter " data-level="5.1.8" data-path="../服务器开发案例实战/4LogServer源码探究.html">
  320. <a href="../服务器开发案例实战/4LogServer源码探究.html">
  321. 从零学习开源项目系列(四)LogServer源码探究
  322. </a>
  323. </li>
  324. </ul>
  325. </li>
  326. <li class="header">Part III</li>
  327. <li class="chapter " data-level="6.1" data-path="../TeamTalk源码解析/">
  328. <a href="../TeamTalk源码解析/">
  329. TeamTalk IM源码分析
  330. </a>
  331. <ul class="articles">
  332. <li class="chapter " data-level="6.1.1" data-path="../TeamTalk源码解析/01TeamTalk介绍.html">
  333. <a href="../TeamTalk源码解析/01TeamTalk介绍.html">
  334. 01 TeamTalk介绍
  335. </a>
  336. </li>
  337. <li class="chapter " data-level="6.1.2" data-path="../TeamTalk源码解析/02服务器端的程序的编译与部署.html">
  338. <a href="../TeamTalk源码解析/02服务器端的程序的编译与部署.html">
  339. 02 服务器端的程序的编译与部署
  340. </a>
  341. </li>
  342. <li class="chapter " data-level="6.1.3" data-path="../TeamTalk源码解析/03服务器端的程序架构介绍.html">
  343. <a href="../TeamTalk源码解析/03服务器端的程序架构介绍.html">
  344. 03 服务器端的程序架构介绍
  345. </a>
  346. </li>
  347. <li class="chapter " data-level="6.1.4" data-path="../TeamTalk源码解析/04服务器端db_proxy_server源码分析.html">
  348. <a href="../TeamTalk源码解析/04服务器端db_proxy_server源码分析.html">
  349. 04 服务器端db_proxy_server源码分析
  350. </a>
  351. </li>
  352. <li class="chapter " data-level="6.1.5" data-path="../TeamTalk源码解析/05服务器端msg_server源码分析.html">
  353. <a href="../TeamTalk源码解析/05服务器端msg_server源码分析.html">
  354. 05 服务器端msg_server源码分析
  355. </a>
  356. </li>
  357. <li class="chapter " data-level="6.1.6" data-path="../TeamTalk源码解析/06服务器端login_server源码分析.html">
  358. <a href="../TeamTalk源码解析/06服务器端login_server源码分析.html">
  359. 06 服务器端login_server源码分析
  360. </a>
  361. </li>
  362. <li class="chapter " data-level="6.1.7" data-path="../TeamTalk源码解析/07服务器端msfs源码分析.html">
  363. <a href="../TeamTalk源码解析/07服务器端msfs源码分析.html">
  364. 07 服务器端msfs源码分析
  365. </a>
  366. </li>
  367. <li class="chapter " data-level="6.1.8" data-path="../TeamTalk源码解析/08服务器端file_server源码分析.html">
  368. <a href="../TeamTalk源码解析/08服务器端file_server源码分析.html">
  369. 08 服务器端file_server源码分析
  370. </a>
  371. </li>
  372. <li class="chapter " data-level="6.1.9" data-path="../TeamTalk源码解析/09服务器端route_server源码分析.html">
  373. <a href="../TeamTalk源码解析/09服务器端route_server源码分析.html">
  374. 09 服务器端route_server源码分析
  375. </a>
  376. </li>
  377. <li class="chapter " data-level="6.1.10" data-path="../TeamTalk源码解析/10开放一个TeamTalk测试服务器地址和几个测试账号.html">
  378. <a href="../TeamTalk源码解析/10开放一个TeamTalk测试服务器地址和几个测试账号.html">
  379. 10 开放一个TeamTalk测试服务器地址和几个测试账号
  380. </a>
  381. </li>
  382. <li class="chapter " data-level="6.1.11" data-path="../TeamTalk源码解析/11pc客户端源码分析.html">
  383. <a href="../TeamTalk源码解析/11pc客户端源码分析.html">
  384. 11 pc客户端源码分析
  385. </a>
  386. </li>
  387. </ul>
  388. </li>
  389. <li class="divider"></li>
  390. <li class="chapter " data-level="7.1" data-path="../libevent源码深度剖析/">
  391. <a href="../libevent源码深度剖析/">
  392. libevent源码深度剖析
  393. </a>
  394. <ul class="articles">
  395. <li class="chapter " data-level="7.1.1" data-path="../libevent源码深度剖析/libevent源码深度剖析01.html">
  396. <a href="../libevent源码深度剖析/libevent源码深度剖析01.html">
  397. libevent源码深度剖析01
  398. </a>
  399. </li>
  400. <li class="chapter " data-level="7.1.2" data-path="../libevent源码深度剖析/libevent源码深度剖析02.html">
  401. <a href="../libevent源码深度剖析/libevent源码深度剖析02.html">
  402. libevent源码深度剖析02
  403. </a>
  404. </li>
  405. <li class="chapter " data-level="7.1.3" data-path="../libevent源码深度剖析/libevent源码深度剖析03.html">
  406. <a href="../libevent源码深度剖析/libevent源码深度剖析03.html">
  407. libevent源码深度剖析03
  408. </a>
  409. </li>
  410. <li class="chapter " data-level="7.1.4" data-path="../libevent源码深度剖析/libevent源码深度剖析04.html">
  411. <a href="../libevent源码深度剖析/libevent源码深度剖析04.html">
  412. libevent源码深度剖析04
  413. </a>
  414. </li>
  415. <li class="chapter " data-level="7.1.5" data-path="../libevent源码深度剖析/libevent源码深度剖析05.html">
  416. <a href="../libevent源码深度剖析/libevent源码深度剖析05.html">
  417. libevent源码深度剖析05
  418. </a>
  419. </li>
  420. <li class="chapter " data-level="7.1.6" data-path="../libevent源码深度剖析/libevent源码深度剖析06.html">
  421. <a href="../libevent源码深度剖析/libevent源码深度剖析06.html">
  422. libevent源码深度剖析06
  423. </a>
  424. </li>
  425. <li class="chapter " data-level="7.1.7" data-path="../libevent源码深度剖析/libevent源码深度剖析07.html">
  426. <a href="../libevent源码深度剖析/libevent源码深度剖析07.html">
  427. libevent源码深度剖析07
  428. </a>
  429. </li>
  430. <li class="chapter " data-level="7.1.8" data-path="../libevent源码深度剖析/libevent源码深度剖析08.html">
  431. <a href="../libevent源码深度剖析/libevent源码深度剖析08.html">
  432. libevent源码深度剖析08
  433. </a>
  434. </li>
  435. <li class="chapter " data-level="7.1.9" data-path="../libevent源码深度剖析/libevent源码深度剖析09.html">
  436. <a href="../libevent源码深度剖析/libevent源码深度剖析09.html">
  437. libevent源码深度剖析09
  438. </a>
  439. </li>
  440. <li class="chapter " data-level="7.1.10" data-path="../libevent源码深度剖析/libevent源码深度剖析10.html">
  441. <a href="../libevent源码深度剖析/libevent源码深度剖析10.html">
  442. libevent源码深度剖析10
  443. </a>
  444. </li>
  445. <li class="chapter " data-level="7.1.11" data-path="../libevent源码深度剖析/libevent源码深度剖析11.html">
  446. <a href="../libevent源码深度剖析/libevent源码深度剖析11.html">
  447. libevent源码深度剖析11
  448. </a>
  449. </li>
  450. <li class="chapter " data-level="7.1.12" data-path="../libevent源码深度剖析/libevent源码深度剖析12.html">
  451. <a href="../libevent源码深度剖析/libevent源码深度剖析12.html">
  452. libevent源码深度剖析12
  453. </a>
  454. </li>
  455. <li class="chapter " data-level="7.1.13" data-path="../libevent源码深度剖析/libevent源码深度剖析13.html">
  456. <a href="../libevent源码深度剖析/libevent源码深度剖析13.html">
  457. libevent源码深度剖析13
  458. </a>
  459. </li>
  460. </ul>
  461. </li>
  462. <li class="chapter " data-level="7.2" data-path="./">
  463. <a href="./">
  464. leveldb源码分析
  465. </a>
  466. <ul class="articles">
  467. <li class="chapter " data-level="7.2.1" data-path="leveldb源码分析1.html">
  468. <a href="leveldb源码分析1.html">
  469. leveldb源码分析1
  470. </a>
  471. </li>
  472. <li class="chapter " data-level="7.2.2" data-path="leveldb源码分析2.html">
  473. <a href="leveldb源码分析2.html">
  474. leveldb源码分析2
  475. </a>
  476. </li>
  477. <li class="chapter " data-level="7.2.3" data-path="leveldb源码分析3.html">
  478. <a href="leveldb源码分析3.html">
  479. leveldb源码分析3
  480. </a>
  481. </li>
  482. <li class="chapter " data-level="7.2.4" data-path="leveldb源码分析4.html">
  483. <a href="leveldb源码分析4.html">
  484. leveldb源码分析4
  485. </a>
  486. </li>
  487. <li class="chapter " data-level="7.2.5" data-path="leveldb源码分析5.html">
  488. <a href="leveldb源码分析5.html">
  489. leveldb源码分析5
  490. </a>
  491. </li>
  492. <li class="chapter " data-level="7.2.6" data-path="leveldb源码分析6.html">
  493. <a href="leveldb源码分析6.html">
  494. leveldb源码分析6
  495. </a>
  496. </li>
  497. <li class="chapter " data-level="7.2.7" data-path="leveldb源码分析7.html">
  498. <a href="leveldb源码分析7.html">
  499. leveldb源码分析7
  500. </a>
  501. </li>
  502. <li class="chapter " data-level="7.2.8" data-path="leveldb源码分析8.html">
  503. <a href="leveldb源码分析8.html">
  504. leveldb源码分析8
  505. </a>
  506. </li>
  507. <li class="chapter " data-level="7.2.9" data-path="leveldb源码分析9.html">
  508. <a href="leveldb源码分析9.html">
  509. leveldb源码分析9
  510. </a>
  511. </li>
  512. <li class="chapter " data-level="7.2.10" data-path="leveldb源码分析10.html">
  513. <a href="leveldb源码分析10.html">
  514. leveldb源码分析10
  515. </a>
  516. </li>
  517. <li class="chapter active" data-level="7.2.11" data-path="leveldb源码分析11.html">
  518. <a href="leveldb源码分析11.html">
  519. leveldb源码分析11
  520. </a>
  521. </li>
  522. <li class="chapter " data-level="7.2.12" data-path="leveldb源码分析12.html">
  523. <a href="leveldb源码分析12.html">
  524. leveldb源码分析12
  525. </a>
  526. </li>
  527. <li class="chapter " data-level="7.2.13" data-path="leveldb源码分析13.html">
  528. <a href="leveldb源码分析13.html">
  529. leveldb源码分析13
  530. </a>
  531. </li>
  532. <li class="chapter " data-level="7.2.14" data-path="leveldb源码分析14.html">
  533. <a href="leveldb源码分析14.html">
  534. leveldb源码分析14
  535. </a>
  536. </li>
  537. <li class="chapter " data-level="7.2.15" data-path="leveldb源码分析15.html">
  538. <a href="leveldb源码分析15.html">
  539. leveldb源码分析15
  540. </a>
  541. </li>
  542. <li class="chapter " data-level="7.2.16" data-path="leveldb源码分析16.html">
  543. <a href="leveldb源码分析16.html">
  544. leveldb源码分析16
  545. </a>
  546. </li>
  547. <li class="chapter " data-level="7.2.17" data-path="leveldb源码分析17.html">
  548. <a href="leveldb源码分析17.html">
  549. leveldb源码分析17
  550. </a>
  551. </li>
  552. <li class="chapter " data-level="7.2.18" data-path="leveldb源码分析18.html">
  553. <a href="leveldb源码分析18.html">
  554. leveldb源码分析18
  555. </a>
  556. </li>
  557. <li class="chapter " data-level="7.2.19" data-path="leveldb源码分析19.html">
  558. <a href="leveldb源码分析19.html">
  559. leveldb源码分析19
  560. </a>
  561. </li>
  562. <li class="chapter " data-level="7.2.20" data-path="leveldb源码分析20.html">
  563. <a href="leveldb源码分析20.html">
  564. leveldb源码分析20
  565. </a>
  566. </li>
  567. <li class="chapter " data-level="7.2.21" data-path="leveldb源码分析21.html">
  568. <a href="leveldb源码分析21.html">
  569. leveldb源码分析21
  570. </a>
  571. </li>
  572. <li class="chapter " data-level="7.2.22" data-path="leveldb源码分析22.html">
  573. <a href="leveldb源码分析22.html">
  574. leveldb源码分析22
  575. </a>
  576. </li>
  577. </ul>
  578. </li>
  579. <li class="divider"></li>
  580. <li class="chapter " data-level="8.1" data-path="../Memcached源码分析/">
  581. <a href="../Memcached源码分析/">
  582. Memcached源码分析
  583. </a>
  584. <ul class="articles">
  585. <li class="chapter " data-level="8.1.1" data-path="../Memcached源码分析/00服务器资源调整.html">
  586. <a href="../Memcached源码分析/00服务器资源调整.html">
  587. 00 服务器资源调整
  588. </a>
  589. </li>
  590. <li class="chapter " data-level="8.1.2" data-path="../Memcached源码分析/01初始化参数解析.html">
  591. <a href="../Memcached源码分析/01初始化参数解析.html">
  592. 01 初始化参数解析
  593. </a>
  594. </li>
  595. <li class="chapter " data-level="8.1.3" data-path="../Memcached源码分析/02网络监听的建立.html">
  596. <a href="../Memcached源码分析/02网络监听的建立.html">
  597. 02 网络监听的建立
  598. </a>
  599. </li>
  600. <li class="chapter " data-level="8.1.4" data-path="../Memcached源码分析/03网络连接建立.html">
  601. <a href="../Memcached源码分析/03网络连接建立.html">
  602. 03 网络连接建立
  603. </a>
  604. </li>
  605. <li class="chapter " data-level="8.1.5" data-path="../Memcached源码分析/04内存初始化.html">
  606. <a href="../Memcached源码分析/04内存初始化.html">
  607. 04 内存初始化
  608. </a>
  609. </li>
  610. <li class="chapter " data-level="8.1.6" data-path="../Memcached源码分析/05资源初始化.html">
  611. <a href="../Memcached源码分析/05资源初始化.html">
  612. 05 资源初始化
  613. </a>
  614. </li>
  615. <li class="chapter " data-level="8.1.7" data-path="../Memcached源码分析/06get过程.html">
  616. <a href="../Memcached源码分析/06get过程.html">
  617. 06 get过程
  618. </a>
  619. </li>
  620. <li class="chapter " data-level="8.1.8" data-path="../Memcached源码分析/07cas属性.html">
  621. <a href="../Memcached源码分析/07cas属性.html">
  622. 07 cas属性
  623. </a>
  624. </li>
  625. <li class="chapter " data-level="8.1.9" data-path="../Memcached源码分析/08内存池.html">
  626. <a href="../Memcached源码分析/08内存池.html">
  627. 08 内存池
  628. </a>
  629. </li>
  630. <li class="chapter " data-level="8.1.10" data-path="../Memcached源码分析/09连接队列.html">
  631. <a href="../Memcached源码分析/09连接队列.html">
  632. 09 连接队列
  633. </a>
  634. </li>
  635. <li class="chapter " data-level="8.1.11" data-path="../Memcached源码分析/10Hash表操作.html">
  636. <a href="../Memcached源码分析/10Hash表操作.html">
  637. 10 Hash表操作
  638. </a>
  639. </li>
  640. <li class="chapter " data-level="8.1.12" data-path="../Memcached源码分析/12set操作.html">
  641. <a href="../Memcached源码分析/12set操作.html">
  642. 12 set操作
  643. </a>
  644. </li>
  645. <li class="chapter " data-level="8.1.13" data-path="../Memcached源码分析/13do_item_alloc操作.html">
  646. <a href="../Memcached源码分析/13do_item_alloc操作.html">
  647. 13 do_item_alloc操作
  648. </a>
  649. </li>
  650. <li class="chapter " data-level="8.1.14" data-path="../Memcached源码分析/14item结构.html">
  651. <a href="../Memcached源码分析/14item结构.html">
  652. 14 item结构
  653. </a>
  654. </li>
  655. <li class="chapter " data-level="8.1.15" data-path="../Memcached源码分析/15Hash表扩容.html">
  656. <a href="../Memcached源码分析/15Hash表扩容.html">
  657. 15 Hash表扩容
  658. </a>
  659. </li>
  660. <li class="chapter " data-level="8.1.16" data-path="../Memcached源码分析/16线程交互.html">
  661. <a href="../Memcached源码分析/16线程交互.html">
  662. 16 线程交互
  663. </a>
  664. </li>
  665. <li class="chapter " data-level="8.1.17" data-path="../Memcached源码分析/17状态机.html">
  666. <a href="../Memcached源码分析/17状态机.html">
  667. 17 状态机
  668. </a>
  669. </li>
  670. </ul>
  671. </li>
  672. <li class="divider"></li>
  673. <li class="chapter " data-level="9.1" data-path="../游戏开发专题/">
  674. <a href="../游戏开发专题/">
  675. 游戏开发专题
  676. </a>
  677. <ul class="articles">
  678. <li class="chapter " data-level="9.1.1" data-path="../游戏开发专题/1游戏服务器开发的基本体系与服务器端开发的一些建议.html">
  679. <a href="../游戏开发专题/1游戏服务器开发的基本体系与服务器端开发的一些建议.html">
  680. 1 游戏服务器开发的基本体系与服务器端开发的一些建议
  681. </a>
  682. </li>
  683. <li class="chapter " data-level="9.1.2" data-path="../游戏开发专题/2网络游戏服务器开发框架设计介绍.html">
  684. <a href="../游戏开发专题/2网络游戏服务器开发框架设计介绍.html">
  685. 2 网络游戏服务器开发框架设计介绍
  686. </a>
  687. </li>
  688. <li class="chapter " data-level="9.1.3" data-path="../游戏开发专题/3游戏后端开发需要掌握的知识.html">
  689. <a href="../游戏开发专题/3游戏后端开发需要掌握的知识.html">
  690. 3 游戏后端开发需要掌握的知识
  691. </a>
  692. </li>
  693. <li class="chapter " data-level="9.1.4" data-path="../游戏开发专题/4关于游戏服务端架构的整理.html">
  694. <a href="../游戏开发专题/4关于游戏服务端架构的整理.html">
  695. 4 关于游戏服务端架构的整理
  696. </a>
  697. </li>
  698. <li class="chapter " data-level="9.1.5" data-path="../游戏开发专题/5各类游戏对应的服务端架构.html">
  699. <a href="../游戏开发专题/5各类游戏对应的服务端架构.html">
  700. 5 各类游戏对应的服务端架构
  701. </a>
  702. </li>
  703. <li class="chapter " data-level="9.1.6" data-path="../游戏开发专题/6从腾讯QQgame高性能服务器集群架构看“分而治之”与“自治”等分布式架构设计原则.html">
  704. <a href="../游戏开发专题/6从腾讯QQgame高性能服务器集群架构看“分而治之”与“自治”等分布式架构设计原则.html">
  705. 6 从腾讯QQgame高性能服务器集群架构看“分而治之”与“自治”等分布式架构设计原则
  706. </a>
  707. </li>
  708. <li class="chapter " data-level="9.1.7" data-path="../游戏开发专题/7QQ游戏百万人同时在线服务器架构实现.html">
  709. <a href="../游戏开发专题/7QQ游戏百万人同时在线服务器架构实现.html">
  710. 7 QQ游戏百万人同时在线服务器架构实现
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  712. </li>
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  714. <a href="../游戏开发专题/8大型多人在线游戏服务器架构设计.html">
  715. 8 大型多人在线游戏服务器架构设计
  716. </a>
  717. </li>
  718. <li class="chapter " data-level="9.1.9" data-path="../游戏开发专题/9百万用户级游戏服务器架构设计.html">
  719. <a href="../游戏开发专题/9百万用户级游戏服务器架构设计.html">
  720. 9 百万用户级游戏服务器架构设计
  721. </a>
  722. </li>
  723. <li class="chapter " data-level="9.1.10" data-path="../游戏开发专题/10十万在线的WebGame的数据库设计思路.html">
  724. <a href="../游戏开发专题/10十万在线的WebGame的数据库设计思路.html">
  725. 10 十万在线的WebGame的数据库设计思路
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  727. </li>
  728. <li class="chapter " data-level="9.1.11" data-path="../游戏开发专题/11一种高性能网络游戏服务器架构设计.html">
  729. <a href="../游戏开发专题/11一种高性能网络游戏服务器架构设计.html">
  730. 11 一种高性能网络游戏服务器架构设计
  731. </a>
  732. </li>
  733. <li class="chapter " data-level="9.1.12" data-path="../游戏开发专题/12经典游戏服务器端架构概述.html">
  734. <a href="../游戏开发专题/12经典游戏服务器端架构概述.html">
  735. 12 经典游戏服务器端架构概述
  736. </a>
  737. </li>
  738. <li class="chapter " data-level="9.1.13" data-path="../游戏开发专题/13游戏跨服架构进化之路.html">
  739. <a href="../游戏开发专题/13游戏跨服架构进化之路.html">
  740. 13 游戏跨服架构进化之路
  741. </a>
  742. </li>
  743. </ul>
  744. </li>
  745. <li class="header">Part IV</li>
  746. <li class="chapter " data-level="10.1" data-path="../程序员面试题精讲/">
  747. <a href="../程序员面试题精讲/">
  748. 程序员面试题精讲
  749. </a>
  750. <ul class="articles">
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  752. <a href="../程序员面试题精讲/腾讯后台开发实习生技能要求.html">
  753. 腾讯后台开发实习生技能要求
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  755. </li>
  756. <li class="chapter " data-level="10.1.2" data-path="../程序员面试题精讲/聊聊如何拿大厂的offer.html">
  757. <a href="../程序员面试题精讲/聊聊如何拿大厂的offer.html">
  758. 聊聊如何拿大厂的 offer
  759. </a>
  760. </li>
  761. <li class="chapter " data-level="10.1.3" data-path="../程序员面试题精讲/网络通信题目集锦.html">
  762. <a href="../程序员面试题精讲/网络通信题目集锦.html">
  763. 网络通信题目集锦
  764. </a>
  765. </li>
  766. <li class="chapter " data-level="10.1.4" data-path="../程序员面试题精讲/我面试后端开发经理的经历.html">
  767. <a href="../程序员面试题精讲/我面试后端开发经理的经历.html">
  768. 我面试后端开发经理的经历
  769. </a>
  770. </li>
  771. <li class="chapter " data-level="10.1.5" data-path="../程序员面试题精讲/LinuxCC++后端开发面试问哪些问题.html">
  772. <a href="../程序员面试题精讲/LinuxCC++后端开发面试问哪些问题.html">
  773. Linux C/C++后端开发面试问哪些问题
  774. </a>
  775. </li>
  776. </ul>
  777. </li>
  778. <li class="chapter " data-level="10.2" data-path="../职业规划/">
  779. <a href="../职业规划/">
  780. 职业规划
  781. </a>
  782. <ul class="articles">
  783. <li class="chapter " data-level="10.2.1" data-path="../职业规划/给工作4年迷茫的程序员们的一点建议.html">
  784. <a href="../职业规划/给工作4年迷茫的程序员们的一点建议.html">
  785. 给工作 4 年迷茫的程序员们的一点建议
  786. </a>
  787. </li>
  788. <li class="chapter " data-level="10.2.2" data-path="../职业规划/聊聊技术人员的常见的职业问题.html">
  789. <a href="../职业规划/聊聊技术人员的常见的职业问题.html">
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  792. </li>
  793. <li class="chapter " data-level="10.2.3" data-path="../职业规划/写给那些傻傻想做服务器开发的朋友.html">
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  795. 写给那些傻傻想做服务器开发的朋友
  796. </a>
  797. </li>
  798. </ul>
  799. </li>
  800. <li class="chapter " data-level="10.3" data-path="../自我提升与开源代码/">
  801. <a href="../自我提升与开源代码/">
  802. 自我提升与开源代码
  803. </a>
  804. <ul class="articles">
  805. <li class="chapter " data-level="10.3.1" data-path="../自我提升与开源代码/2020年好好读一读开源代码吧.html">
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  808. </a>
  809. </li>
  810. </ul>
  811. </li>
  812. <li class="chapter " data-level="10.4" data-path="../后端开发相关的书籍/">
  813. <a href="../后端开发相关的书籍/">
  814. 后端开发相关的书籍
  815. </a>
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  817. <li class="chapter " data-level="10.4.1" data-path="../后端开发相关的书籍/后台开发应该读的书.html">
  818. <a href="../后端开发相关的书籍/后台开发应该读的书.html">
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  820. </a>
  821. </li>
  822. </ul>
  823. </li>
  824. <li class="chapter " data-level="10.5" data-path="../程序员的简历/">
  825. <a href="../程序员的简历/">
  826. 程序员的简历
  827. </a>
  828. <ul class="articles">
  829. <li class="chapter " data-level="10.5.1" data-path="../程序员的简历/程序员如何写简历.html">
  830. <a href="../程序员的简历/程序员如何写简历.html">
  831. 程序员如何写简历
  832. </a>
  833. </li>
  834. </ul>
  835. </li>
  836. <li class="chapter " data-level="10.6" data-path="../程序员的薪资与年终奖那些事儿/">
  837. <a href="../程序员的薪资与年终奖那些事儿/">
  838. 程序员的薪资与年终奖那些事儿
  839. </a>
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  842. <a href="../程序员的薪资与年终奖那些事儿/技术面试与HR谈薪资技巧.html">
  843. 技术面试与HR谈薪资技巧
  844. </a>
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  855. </li>
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  857. </li>
  858. <li class="chapter " data-level="10.7" data-path="../程序员的烦心事/">
  859. <a href="../程序员的烦心事/">
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  864. <a href="../程序员的烦心事/拒绝了一家公司的offer后,他们的副总和hr总监同时打电话来询问拒绝原因并极力要求加入,我该不该去?.html">
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  866. </a>
  867. </li>
  868. <li class="chapter " data-level="10.7.2" data-path="../程序员的烦心事/我是一名程序员,结婚时女友要求我用两年的工资作为彩礼,我该不该答应?.html">
  869. <a href="../程序员的烦心事/我是一名程序员,结婚时女友要求我用两年的工资作为彩礼,我该不该答应?.html">
  870. 我是一名程序员,结婚时女友要求我用两年的工资作为彩礼,我该不该答应?
  871. </a>
  872. </li>
  873. </ul>
  874. </li>
  875. <li class="chapter " data-level="10.8" data-path="../作者的故事/">
  876. <a href="../作者的故事/">
  877. 作者的故事
  878. </a>
  879. <ul class="articles">
  880. <li class="chapter " data-level="10.8.1" data-path="../作者的故事/我的2019.html">
  881. <a href="../作者的故事/我的2019.html">
  882. 我的 2019
  883. </a>
  884. </li>
  885. <li class="chapter " data-level="10.8.2" data-path="../作者的故事/我是如何年薪五十万的.html">
  886. <a href="../作者的故事/我是如何年薪五十万的.html">
  887. 我是如何年薪五十万的
  888. </a>
  889. </li>
  890. </ul>
  891. </li>
  892. <li class="divider"></li>
  893. <li>
  894. <a href="https://www.gitbook.com" target="blank" class="gitbook-link">
  895. Published with GitBook
  896. </a>
  897. </li>
  898. </ul>
  899. </nav>
  900. </div>
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  902. <div class="book-anchor">
  903. <div class="book-anchor-title">在这篇文章中:</div>
  904. <div class="book-anchor-body">
  905. </div>
  906. </div>
  907. <div class="book-body">
  908. <div class="body-inner">
  909. <div class="book-header" role="navigation">
  910. <!-- Title -->
  911. <h1>
  912. <i class="fa fa-circle-o-notch fa-spin"></i>
  913. <a href="../.." >leveldb源码分析11</a>
  914. </h1>
  915. </div>
  916. <div class="page-wrapper" tabindex="-1" role="main">
  917. <div class="page-inner">
  918. <div id="book-search-results">
  919. <div class="search-noresults">
  920. <section class="normal markdown-section">
  921. <div id="anchor-navigation-ex-navbar"><i class="fa fa-navicon"></i><ul><li><span class="title-icon "></span><a href="#leveldb&#x6E90;&#x7801;&#x5206;&#x6790;11"><b></b>leveldb&#x6E90;&#x7801;&#x5206;&#x6790;11</a></li><ul><li><span class="title-icon "></span><a href="#7tablecache"><b></b>7.TableCache</a></li><ul><li><span class="title-icon "></span><a href="#71-tablecache&#x7B80;&#x4ECB;"><b></b>7.1 TableCache&#x7B80;&#x4ECB;</a></li><li><span class="title-icon "></span><a href="#72-tablecacheget"><b></b>7.2 TableCache::Get()</a></li><li><span class="title-icon "></span><a href="#73-tablecache&#x904D;&#x5386;"><b></b>7.3 TableCache&#x904D;&#x5386;</a></li><li><span class="title-icon "></span><a href="#74-tablecachefindtable"><b></b>7.4 TableCache::FindTable()</a></li><li><span class="title-icon "></span><a href="#75-&#x8F85;&#x52A9;&#x51FD;&#x6570;"><b></b>7.5 &#x8F85;&#x52A9;&#x51FD;&#x6570;</a></li></ul></ul></ul></div><h1 id="leveldb&#x6E90;&#x7801;&#x5206;&#x6790;11"><a name="leveldb&#x6E90;&#x7801;&#x5206;&#x6790;11" class="anchor-navigation-ex-anchor" href="#leveldb&#x6E90;&#x7801;&#x5206;&#x6790;11"><i class="fa fa-link" aria-hidden="true"></i></a>leveldb&#x6E90;&#x7801;&#x5206;&#x6790;11</h1>
  922. <p>&#x672C;&#x7CFB;&#x5217;&#x300A;leveldb&#x6E90;&#x7801;&#x5206;&#x6790;&#x300B;&#x5171;&#x6709;22&#x7BC7;&#x6587;&#x7AE0;&#xFF0C;&#x8FD9;&#x662F;&#x7B2C;&#x5341;&#x4E00;&#x7BC7;</p>
  923. <h2 id="7tablecache"><a name="7tablecache" class="anchor-navigation-ex-anchor" href="#7tablecache"><i class="fa fa-link" aria-hidden="true"></i></a>7.TableCache</h2>
  924. <p>&#x8FD9;&#x7AE0;&#x7684;&#x5185;&#x5BB9;&#x6BD4;&#x8F83;&#x7B80;&#x5355;&#xFF0C;&#x7BC7;&#x5E45;&#x4E5F;&#x4E0D;&#x957F;&#x3002;</p>
  925. <h3 id="71-tablecache&#x7B80;&#x4ECB;"><a name="71-tablecache&#x7B80;&#x4ECB;" class="anchor-navigation-ex-anchor" href="#71-tablecache&#x7B80;&#x4ECB;"><i class="fa fa-link" aria-hidden="true"></i></a>7.1 TableCache&#x7B80;&#x4ECB;</h3>
  926. <p><strong>TableCache&#x7F13;&#x5B58;</strong>&#x7684;&#x662F;Table&#x5BF9;&#x8C61;&#xFF0C;&#x6BCF;&#x4E2A;DB&#x4E00;&#x4E2A;&#xFF0C;&#x5B83;&#x5185;&#x90E8;&#x4F7F;&#x7528;&#x4E00;&#x4E2A;LRUCache&#x7F13;&#x5B58;&#x6240;&#x6709;&#x7684;table&#x5BF9;&#x8C61;&#xFF0C;&#x5B9E;&#x9645;&#x4E0A;&#x5176;&#x5185;&#x5BB9;&#x662F;&#x6587;&#x4EF6;&#x7F16;&#x53F7;{file number, TableAndFile}<em>&#x3002;</em>TableAndFile&#x662F;&#x4E00;&#x4E2A;&#x62E5;&#x6709;<strong>2&#x4E2A;&#x53D8;&#x91CF;</strong>&#x7684;&#x7ED3;&#x6784;&#x4F53;&#xFF1A;RandomAccessFile&#x548C;Table*&#xFF1B;</p>
  927. <p>TableCache&#x7C7B;&#x7684;<strong>&#x4E3B;&#x8981;&#x6210;&#x5458;&#x53D8;&#x91CF;</strong>&#x6709;&#xFF1A;</p>
  928. <pre class="language-"><code>Env* const env_; // &#x7528;&#x6765;&#x64CD;&#x4F5C;&#x6587;&#x4EF6;
  929. const std::string dbname_; // db&#x540D;
  930. Cache* cache_; // LRUCache
  931. </code></pre><p>&#x4E09;&#x4E2A;&#x51FD;&#x6570;&#x63A5;&#x53E3;&#xFF0C;&#x5176;&#x4E2D;&#x7684;&#x53C2;&#x6570;<strong>@file_number</strong>&#x662F;&#x6587;&#x4EF6;&#x7F16;&#x53F7;&#xFF0C;<strong>@file_size</strong>&#x662F;&#x6587;&#x4EF6;&#x5927;&#x5C0F;&#xFF1A;</p>
  932. <pre class="language-"><code>void Evict(uint64_tfile_number);
  933. // &#x8BE5;&#x51FD;&#x6570;&#x7528;&#x4EE5;&#x6E05;&#x9664;&#x6307;&#x5B9A;&#x6587;&#x4EF6;&#x6240;&#x6709;cache&#x7684;entry&#xFF0C;
  934. //&#x51FD;&#x6570;&#x5B9E;&#x73B0;&#x5F88;&#x7B80;&#x5355;&#xFF0C;&#x5C31;&#x662F;&#x6839;&#x636E;file number&#x6E05;&#x9664;cache&#x5BF9;&#x8C61;&#x3002;
  935. EncodeFixed64(buf,file_number); cache_-&gt;Erase(Slice(buf, sizeof(buf)));
  936. Iterator* NewIterator(constReadOptions&amp; options, uint64_t file_number,
  937. uint64_t file_size, Table**tableptr = NULL);
  938. //&#x8BE5;&#x51FD;&#x6570;&#x4E3A;&#x6307;&#x5B9A;&#x7684;file&#x8FD4;&#x56DE;&#x4E00;&#x4E2A;iterator(&#x5BF9;&#x5E94;&#x7684;&#x6587;&#x4EF6;&#x957F;&#x5EA6;&#x5FC5;&#x987B;&#x662F;&quot;file_size&quot;&#x5B57;&#x8282;).
  939. //&#x5982;&#x679C;tableptr&#x4E0D;&#x662F;NULL&#xFF0C;&#x90A3;&#x4E48;tableptr&#x4FDD;&#x5B58;&#x7684;&#x662F;&#x5E95;&#x5C42;&#x7684;Table&#x6307;&#x9488;&#x3002;
  940. //&#x8FD4;&#x56DE;&#x7684;tableptr&#x662F;cache&#x62E5;&#x6709;&#x7684;&#xFF0C;&#x4E0D;&#x80FD;&#x88AB;&#x5220;&#x9664;&#xFF0C;&#x751F;&#x547D;&#x5468;&#x671F;&#x540C;&#x8FD4;&#x56DE;&#x7684;iterator
  941. Status Get(constReadOptions&amp; options,
  942. uint64_t file_number,uint64_t file_size,
  943. const Slice&amp; k,void* arg,
  944. void(*handle_result)(void*, const Slice&amp;, const Slice&amp;));
  945. // &#x8FD9;&#x662F;&#x4E00;&#x4E2A;&#x67E5;&#x627E;&#x51FD;&#x6570;&#xFF0C;&#x5982;&#x679C;&#x5728;&#x6307;&#x5B9A;&#x6587;&#x4EF6;&#x4E2D;seek &#x5230;internal key &quot;k&quot; &#x627E;&#x5230;&#x4E00;&#x4E2A;entry&#xFF0C;
  946. //&#x5C31;&#x8C03;&#x7528; (*handle_result)(arg,found_key, found_value).
  947. </code></pre><h3 id="72-tablecacheget"><a name="72-tablecacheget" class="anchor-navigation-ex-anchor" href="#72-tablecacheget"><i class="fa fa-link" aria-hidden="true"></i></a>7.2 TableCache::Get()</h3>
  948. <p>&#x5148;&#x6765;&#x770B;&#x770B;<strong>Get&#x63A5;&#x53E3;&#xFF0C;</strong>&#x53EA;&#x6709;&#x51E0;&#x884C;&#x4EE3;&#x7801;&#xFF1A;</p>
  949. <pre class="language-"><code>Cache::Handle* handle = NULL;
  950. Status s =FindTable(file_number, file_size, &amp;handle);
  951. if (s.ok())
  952. {
  953. Table* t =reinterpret_cast<span class="token tag"><span class="token tag"><span class="token punctuation">&lt;</span>TableAndFile*</span><span class="token punctuation">&gt;</span></span>(cache_-&gt;Value(handle))-&gt;table;
  954. s = t-&gt;InternalGet(options,k, arg, saver);
  955. cache_-&gt;Release(handle);
  956. }
  957. return s;
  958. </code></pre><p><strong>&#x9996;&#x5148;</strong>&#x6839;&#x636E;file_number&#x627E;&#x5230;Table&#x7684;cache&#x5BF9;&#x8C61;&#xFF0C;<strong>&#x5982;&#x679C;</strong>&#x627E;&#x5230;&#x4E86;&#x5C31;&#x8C03;&#x7528;Table::InternalGet&#xFF0C;&#x5BF9;&#x67E5;&#x627E;&#x7ED3;&#x679C;&#x7684;&#x5904;&#x7406;&#x5728;&#x8C03;&#x7528;&#x8005;&#x4F20;&#x5165;&#x7684;<strong>saver&#x56DE;&#x8C03;&#x51FD;&#x6570;</strong>&#x4E2D;&#x3002;
  959. Cache&#x5728;Lookup&#x627E;&#x5230;<strong>cache&#x5BF9;&#x8C61;</strong>&#x540E;&#xFF0C;<strong>&#x5982;&#x679C;</strong>&#x4E0D;&#x518D;&#x4F7F;&#x7528;&#x9700;&#x8981;&#x8C03;&#x7528;Release&#x51CF;&#x5F15;&#x7528;&#x8BA1;&#x6570;&#x3002;&#x8FD9;&#x4E2A;&#x89C1;Cache&#x7684;&#x63A5;&#x53E3;&#x8BF4;&#x660E;&#x3002;</p>
  960. <h3 id="73-tablecache&#x904D;&#x5386;"><a name="73-tablecache&#x904D;&#x5386;" class="anchor-navigation-ex-anchor" href="#73-tablecache&#x904D;&#x5386;"><i class="fa fa-link" aria-hidden="true"></i></a>7.3 TableCache&#x904D;&#x5386;</h3>
  961. <p>&#x51FD;&#x6570;NewIterator()&#xFF0C;&#x8FD4;&#x56DE;&#x4E00;&#x4E2A;&#x53EF;&#x4EE5;&#x904D;&#x5386;<strong>Table&#x5BF9;&#x8C61;&#x7684;Iterator&#x6307;&#x9488;</strong>&#xFF0C;&#x51FD;&#x6570;&#x903B;&#x8F91;&#xFF1A;</p>
  962. <h4 id="s1-&#x521D;&#x59CB;&#x5316;tableptr&#xFF0C;&#x8C03;&#x7528;findtable&#xFF0C;&#x8FD4;&#x56DE;cache&#x5BF9;&#x8C61;"><a name="s1-&#x521D;&#x59CB;&#x5316;tableptr&#xFF0C;&#x8C03;&#x7528;findtable&#xFF0C;&#x8FD4;&#x56DE;cache&#x5BF9;&#x8C61;" class="anchor-navigation-ex-anchor" href="#s1-&#x521D;&#x59CB;&#x5316;tableptr&#xFF0C;&#x8C03;&#x7528;findtable&#xFF0C;&#x8FD4;&#x56DE;cache&#x5BF9;&#x8C61;"><i class="fa fa-link" aria-hidden="true"></i></a>S1 &#x521D;&#x59CB;&#x5316;tableptr&#xFF0C;&#x8C03;&#x7528;FindTable&#xFF0C;&#x8FD4;&#x56DE;cache&#x5BF9;&#x8C61;</h4>
  963. <pre class="language-"><code>if (tableptr != NULL) *tableptr =NULL;
  964. Cache::Handle* handle = NULL;
  965. Status s =FindTable(file_number, file_size, &amp;handle);
  966. if (!s.ok()) returnNewErrorIterator(s);
  967. </code></pre><h4 id="s2-&#x4ECE;cache&#x5BF9;&#x8C61;&#x4E2D;&#x53D6;&#x51FA;table&#x5BF9;&#x8C61;&#x6307;&#x9488;&#xFF0C;&#x8C03;&#x7528;&#x5176;newiterator&#x8FD4;&#x56DE;iterator&#x5BF9;&#x8C61;&#xFF0C;&#x5E76;&#x4E3A;iterator&#x6CE8;&#x518C;&#x4E00;&#x4E2A;cleanup&#x51FD;&#x6570;&#x3002;"><a name="s2-&#x4ECE;cache&#x5BF9;&#x8C61;&#x4E2D;&#x53D6;&#x51FA;table&#x5BF9;&#x8C61;&#x6307;&#x9488;&#xFF0C;&#x8C03;&#x7528;&#x5176;newiterator&#x8FD4;&#x56DE;iterator&#x5BF9;&#x8C61;&#xFF0C;&#x5E76;&#x4E3A;iterator&#x6CE8;&#x518C;&#x4E00;&#x4E2A;cleanup&#x51FD;&#x6570;&#x3002;" class="anchor-navigation-ex-anchor" href="#s2-&#x4ECE;cache&#x5BF9;&#x8C61;&#x4E2D;&#x53D6;&#x51FA;table&#x5BF9;&#x8C61;&#x6307;&#x9488;&#xFF0C;&#x8C03;&#x7528;&#x5176;newiterator&#x8FD4;&#x56DE;iterator&#x5BF9;&#x8C61;&#xFF0C;&#x5E76;&#x4E3A;iterator&#x6CE8;&#x518C;&#x4E00;&#x4E2A;cleanup&#x51FD;&#x6570;&#x3002;"><i class="fa fa-link" aria-hidden="true"></i></a>S2 &#x4ECE;cache&#x5BF9;&#x8C61;&#x4E2D;&#x53D6;&#x51FA;Table&#x5BF9;&#x8C61;&#x6307;&#x9488;&#xFF0C;&#x8C03;&#x7528;&#x5176;NewIterator&#x8FD4;&#x56DE;Iterator&#x5BF9;&#x8C61;&#xFF0C;&#x5E76;&#x4E3A;Iterator&#x6CE8;&#x518C;&#x4E00;&#x4E2A;cleanup&#x51FD;&#x6570;&#x3002;</h4>
  968. <pre class="language-"><code>Table* table =reinterpret_cast<span class="token tag"><span class="token tag"><span class="token punctuation">&lt;</span>TableAndFile*</span><span class="token punctuation">&gt;</span></span>(cache_-&gt;Value(handle))-&gt;table;
  969. Iterator* result =table-&gt;NewIterator(options);
  970. result-&gt;RegisterCleanup(&amp;UnrefEntry, cache_, handle);
  971. if (tableptr != NULL) *tableptr= table;
  972. return result;
  973. </code></pre><h3 id="74-tablecachefindtable"><a name="74-tablecachefindtable" class="anchor-navigation-ex-anchor" href="#74-tablecachefindtable"><i class="fa fa-link" aria-hidden="true"></i></a>7.4 TableCache::FindTable()</h3>
  974. <p>&#x524D;&#x9762;&#x7684;<strong>&#x904D;&#x5386;&#x548C;Get&#x51FD;&#x6570;</strong>&#x90FD;&#x4F9D;&#x8D56;&#x4E8E;FindTable&#x8FD9;&#x4E2A;&#x79C1;&#x6709;&#x51FD;&#x6570;&#x5B8C;&#x6210;&#x5BF9;cache&#x7684;&#x67E5;&#x627E;&#xFF0C;&#x4E0B;&#x9762;&#x5C31;&#x6765;&#x770B;&#x770B;&#x8BE5;&#x51FD;&#x6570;&#x7684;&#x903B;&#x8F91;&#x3002;&#x51FD;&#x6570;&#x58F0;&#x660E;&#x4E3A;&#xFF1A;</p>
  975. <pre class="language-"><code>Status FindTable(uint64_t file_number, uint64_t file_size,
  976. Cache::Handle** handle)
  977. </code></pre><p>&#x51FD;&#x6570;&#x6D41;&#x7A0B;&#x4E3A;&#xFF1A;</p>
  978. <h4 id="s1-&#x9996;&#x5148;&#x6839;&#x636E;file-number&#x4ECE;cache&#x4E2D;&#x67E5;&#x627E;table&#xFF0C;&#x627E;&#x5230;&#x5C31;&#x76F4;&#x63A5;&#x8FD4;&#x56DE;&#x6210;&#x529F;&#x3002;"><a name="s1-&#x9996;&#x5148;&#x6839;&#x636E;file-number&#x4ECE;cache&#x4E2D;&#x67E5;&#x627E;table&#xFF0C;&#x627E;&#x5230;&#x5C31;&#x76F4;&#x63A5;&#x8FD4;&#x56DE;&#x6210;&#x529F;&#x3002;" class="anchor-navigation-ex-anchor" href="#s1-&#x9996;&#x5148;&#x6839;&#x636E;file-number&#x4ECE;cache&#x4E2D;&#x67E5;&#x627E;table&#xFF0C;&#x627E;&#x5230;&#x5C31;&#x76F4;&#x63A5;&#x8FD4;&#x56DE;&#x6210;&#x529F;&#x3002;"><i class="fa fa-link" aria-hidden="true"></i></a>S1 &#x9996;&#x5148;&#x6839;&#x636E;file number&#x4ECE;cache&#x4E2D;&#x67E5;&#x627E;table&#xFF0C;&#x627E;&#x5230;&#x5C31;&#x76F4;&#x63A5;&#x8FD4;&#x56DE;&#x6210;&#x529F;&#x3002;</h4>
  979. <pre class="language-"><code>char buf[sizeof(file_number)];
  980. EncodeFixed64(buf, file_number);
  981. Slice key(buf, sizeof(buf));
  982. *handle = cache_-&gt;Lookup(key);
  983. </code></pre><h4 id="s2-&#x5982;&#x679C;&#x6CA1;&#x6709;&#x627E;&#x5230;&#xFF0C;&#x8BF4;&#x660E;table&#x4E0D;&#x5728;cache&#x4E2D;&#xFF0C;&#x5219;&#x6839;&#x636E;file-number&#x548C;db-name&#x6253;&#x5F00;&#x4E00;&#x4E2A;radomaccessfile&#x3002;table&#x6587;&#x4EF6;&#x683C;&#x5F0F;&#x4E3A;&#xFF1A;sst&#x3002;&#x5982;&#x679C;&#x6587;&#x4EF6;&#x6253;&#x5F00;&#x6210;&#x529F;&#xFF0C;&#x5219;&#x8C03;&#x7528;tableopen&#x8BFB;&#x53D6;sstable&#x6587;&#x4EF6;&#x3002;"><a name="s2-&#x5982;&#x679C;&#x6CA1;&#x6709;&#x627E;&#x5230;&#xFF0C;&#x8BF4;&#x660E;table&#x4E0D;&#x5728;cache&#x4E2D;&#xFF0C;&#x5219;&#x6839;&#x636E;file-number&#x548C;db-name&#x6253;&#x5F00;&#x4E00;&#x4E2A;radomaccessfile&#x3002;table&#x6587;&#x4EF6;&#x683C;&#x5F0F;&#x4E3A;&#xFF1A;sst&#x3002;&#x5982;&#x679C;&#x6587;&#x4EF6;&#x6253;&#x5F00;&#x6210;&#x529F;&#xFF0C;&#x5219;&#x8C03;&#x7528;tableopen&#x8BFB;&#x53D6;sstable&#x6587;&#x4EF6;&#x3002;" class="anchor-navigation-ex-anchor" href="#s2-&#x5982;&#x679C;&#x6CA1;&#x6709;&#x627E;&#x5230;&#xFF0C;&#x8BF4;&#x660E;table&#x4E0D;&#x5728;cache&#x4E2D;&#xFF0C;&#x5219;&#x6839;&#x636E;file-number&#x548C;db-name&#x6253;&#x5F00;&#x4E00;&#x4E2A;radomaccessfile&#x3002;table&#x6587;&#x4EF6;&#x683C;&#x5F0F;&#x4E3A;&#xFF1A;sst&#x3002;&#x5982;&#x679C;&#x6587;&#x4EF6;&#x6253;&#x5F00;&#x6210;&#x529F;&#xFF0C;&#x5219;&#x8C03;&#x7528;tableopen&#x8BFB;&#x53D6;sstable&#x6587;&#x4EF6;&#x3002;"><i class="fa fa-link" aria-hidden="true"></i></a>S2 &#x5982;&#x679C;&#x6CA1;&#x6709;&#x627E;&#x5230;&#xFF0C;&#x8BF4;&#x660E;table&#x4E0D;&#x5728;cache&#x4E2D;&#xFF0C;&#x5219;&#x6839;&#x636E;file number&#x548C;db name&#x6253;&#x5F00;&#x4E00;&#x4E2A;RadomAccessFile&#x3002;Table&#x6587;&#x4EF6;&#x683C;&#x5F0F;&#x4E3A;&#xFF1A;..sst&#x3002;&#x5982;&#x679C;&#x6587;&#x4EF6;&#x6253;&#x5F00;&#x6210;&#x529F;&#xFF0C;&#x5219;&#x8C03;&#x7528;Table::Open&#x8BFB;&#x53D6;sstable&#x6587;&#x4EF6;&#x3002;</h4>
  984. <pre class="language-"><code>std::string fname =TableFileName(dbname_, file_number);
  985. RandomAccessFile* file = NULL;
  986. Table* table = NULL;
  987. s =env_-&gt;NewRandomAccessFile(fname, &amp;file);
  988. if (s.ok()) s =Table::Open(*options_, file, file_size, &amp;table);
  989. </code></pre><h4 id="s3-&#x5982;&#x679C;tableopen&#x6210;&#x529F;&#x5219;&#xFF0C;&#x63D2;&#x5165;&#x5230;cache&#x4E2D;&#x3002;"><a name="s3-&#x5982;&#x679C;tableopen&#x6210;&#x529F;&#x5219;&#xFF0C;&#x63D2;&#x5165;&#x5230;cache&#x4E2D;&#x3002;" class="anchor-navigation-ex-anchor" href="#s3-&#x5982;&#x679C;tableopen&#x6210;&#x529F;&#x5219;&#xFF0C;&#x63D2;&#x5165;&#x5230;cache&#x4E2D;&#x3002;"><i class="fa fa-link" aria-hidden="true"></i></a>S3 &#x5982;&#x679C;Table::Open&#x6210;&#x529F;&#x5219;&#xFF0C;&#x63D2;&#x5165;&#x5230;Cache&#x4E2D;&#x3002;</h4>
  990. <pre class="language-"><code>TableAndFile* tf = newTableAndFile(table, file);
  991. *handle = cache_-&gt;Insert(key,tf, 1, &amp;DeleteEntry);
  992. </code></pre><p>&#x5982;&#x679C;&#x5931;&#x8D25;&#xFF0C;&#x5219;<strong>&#x5220;&#x9664;file</strong>&#xFF0C;&#x76F4;&#x63A5;&#x8FD4;&#x56DE;&#x5931;&#x8D25;&#xFF0C;&#x5931;&#x8D25;&#x7684;&#x7ED3;&#x679C;&#x662F;&#x4E0D;&#x4F1A;cache&#x7684;&#x3002;</p>
  993. <h3 id="75-&#x8F85;&#x52A9;&#x51FD;&#x6570;"><a name="75-&#x8F85;&#x52A9;&#x51FD;&#x6570;" class="anchor-navigation-ex-anchor" href="#75-&#x8F85;&#x52A9;&#x51FD;&#x6570;"><i class="fa fa-link" aria-hidden="true"></i></a>7.5 &#x8F85;&#x52A9;&#x51FD;&#x6570;</h3>
  994. <p>&#x6709;&#x70B9;&#x5570;&#x55E6;&#xFF0C;&#x4E0D;&#x8FC7;&#x8FD8;&#x662F;&#x5199;&#x4E00;&#x4E0B;&#x5427;&#x3002;&#x5176;&#x4E2D;&#x4E00;&#x4E2A;&#x662F;&#x4E3A;<strong>LRUCache&#x6CE8;&#x518C;&#x7684;&#x5220;&#x9664;&#x51FD;&#x6570;DeleteEntry&#x3002;</strong></p>
  995. <pre class="language-"><code>static void DeleteEntry(const Slice&amp; key, void* value)
  996. {
  997. TableAndFile* tf =reinterpret_cast<span class="token tag"><span class="token tag"><span class="token punctuation">&lt;</span>TableAndFile*</span><span class="token punctuation">&gt;</span></span>(value);
  998. delete tf-&gt;table;
  999. delete tf-&gt;file;
  1000. delete tf;
  1001. }
  1002. </code></pre><p>&#x53E6;&#x5916;&#x4E00;&#x4E2A;&#x662F;<strong>&#x4E3A;Iterator&#x6CE8;&#x518C;&#x7684;&#x6E05;&#x9664;&#x51FD;&#x6570;UnrefEntry&#x3002;</strong></p>
  1003. <pre class="language-"><code>static void UnrefEntry(void* arg1, void* arg2)
  1004. {
  1005. Cache* cache =reinterpret_cast<span class="token tag"><span class="token tag"><span class="token punctuation">&lt;</span>Cache*</span><span class="token punctuation">&gt;</span></span>(arg1);
  1006. Cache::Handle* h =reinterpret_cast<span class="token tag"><span class="token tag"><span class="token punctuation">&lt;</span><span class="token namespace">Cache:</span>:Handle*</span><span class="token punctuation">&gt;</span></span>(arg2);
  1007. cache-&gt;Release(h);
  1008. }
  1009. </code></pre><footer class="page-footer"><span class="copyright">&#x5982;&#x9700;&#x4E0B;&#x8F7D;&#x672C;&#x7AD9;&#x5168;&#x90E8;&#x6280;&#x672F;&#x6587;&#x7AE0;&#xFF0C;&#x53EF;&#x4EE5;&#x5728;&#x3010;&#x9AD8;&#x6027;&#x80FD;&#x670D;&#x52A1;&#x5668;&#x5F00;&#x53D1;&#x3011;&#x516C;&#x4F17;&#x53F7;&#x56DE;&#x590D;&#x5173;&#x952E;&#x5B57;&#x201C;&#x6587;&#x7AE0;&#x4E0B;&#x8F7D;&#x201D;&#x5373;&#x53EF;&#x3002;</span><span class="footer-modification">&#x6700;&#x8FD1;&#x66F4;&#x65B0;&#x65F6;&#x95F4;&#xFF1A;
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