自己写的。用信号量机制来解决哲学家问题中的死锁。附有详细注解。-wrote it myself. Using signal volume philosopher mechanism to solve the problem of deadlock. Accompanied by a detailed explanation.
SHOW FULL COLUMNS FROM `jrk_downrecords` [ RunTime:0.001625s ]
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:0.104055s ]
SHOW FULL COLUMNS FROM `jrk_tagrecords` [ RunTime:0.001245s ]
SELECT * FROM `jrk_tagrecords` WHERE `status` = 1 ORDER BY `num` DESC LIMIT 20 [ RunTime:0.003094s ]
SHOW FULL COLUMNS FROM `jrk_member` [ RunTime:0.001183s ]
SELECT `id`,`username`,`userhead`,`usertime` FROM `jrk_member` WHERE `status` = 1 ORDER BY `usertime` DESC LIMIT 10 [ RunTime:0.008451s ]
SHOW FULL COLUMNS FROM `jrk_searchrecords` [ RunTime:0.001386s ]
SELECT * FROM `jrk_searchrecords` WHERE `status` = 1 ORDER BY `num` DESC LIMIT 5 [ RunTime:0.006126s ]
SELECT aid,title,count(aid) as c FROM `jrk_downrecords` GROUP BY `aid` ORDER BY `c` DESC LIMIT 10 [ RunTime:0.019587s ]
SHOW FULL COLUMNS FROM `jrk_articles` [ RunTime:0.001822s ]
UPDATE `jrk_articles` SET `hits` = 1 WHERE `id` = 181642 [ RunTime:0.004102s ]
