使用信号灯(semaphore)，事件(Event)，临界区(CriticalSection)进行线程同步的例子- Uses the signal light (semaphore), the event (Event), the
critical zone (CriticalSection) carries on line regulation
synchronization the example
SHOW FULL COLUMNS FROM `jrk_downrecords` [ RunTime:0.002582s ]
SELECT `a`.`aid`,`a`.`title`,`a`.`create_time`,`m`.`username` FROM `jrk_downrecords` `a` INNER JOIN `jrk_member` `m` ON `a`.`uid`=`m`.`id` WHERE `a`.`status` = 1 GROUP BY `a`.`aid` ORDER BY `a`.`create_time` DESC LIMIT 10 [ RunTime:0.093926s ]
SHOW FULL COLUMNS FROM `jrk_tagrecords` [ RunTime:0.002280s ]
SELECT * FROM `jrk_tagrecords` WHERE `status` = 1 ORDER BY `num` DESC LIMIT 20 [ RunTime:0.001950s ]
SHOW FULL COLUMNS FROM `jrk_member` [ RunTime:0.002289s ]
SELECT `id`,`username`,`userhead`,`usertime` FROM `jrk_member` WHERE `status` = 1 ORDER BY `usertime` DESC LIMIT 10 [ RunTime:0.003681s ]
SHOW FULL COLUMNS FROM `jrk_searchrecords` [ RunTime:0.001992s ]
SELECT * FROM `jrk_searchrecords` WHERE `status` = 1 ORDER BY `num` DESC LIMIT 5 [ RunTime:0.003357s ]
SELECT aid,title,count(aid) as c FROM `jrk_downrecords` GROUP BY `aid` ORDER BY `c` DESC LIMIT 10 [ RunTime:0.014725s ]
SHOW FULL COLUMNS FROM `jrk_articles` [ RunTime:0.002396s ]
UPDATE `jrk_articles` SET `hits` = 1 WHERE `id` = 104941 [ RunTime:0.001149s ]
