信号量的类封装，适合C++开发，通过此类，能够直接对信号量进行创建、关闭等操作开发。-Semaphore class package for C++ development, through such, can be carried out directly on the semaphore creation, closure, and so operate the development.
SHOW FULL COLUMNS FROM `jrk_downrecords` [ RunTime:0.001502s ]
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:0.103659s ]
SHOW FULL COLUMNS FROM `jrk_tagrecords` [ RunTime:0.001354s ]
SELECT * FROM `jrk_tagrecords` WHERE `status` = 1 ORDER BY `num` DESC LIMIT 20 [ RunTime:0.001918s ]
SHOW FULL COLUMNS FROM `jrk_member` [ RunTime:0.001337s ]
SELECT `id`,`username`,`userhead`,`usertime` FROM `jrk_member` WHERE `status` = 1 ORDER BY `usertime` DESC LIMIT 10 [ RunTime:0.003660s ]
SHOW FULL COLUMNS FROM `jrk_searchrecords` [ RunTime:0.001139s ]
SELECT * FROM `jrk_searchrecords` WHERE `status` = 1 ORDER BY `num` DESC LIMIT 5 [ RunTime:0.003270s ]
SELECT aid,title,count(aid) as c FROM `jrk_downrecords` GROUP BY `aid` ORDER BY `c` DESC LIMIT 10 [ RunTime:0.015023s ]
SHOW FULL COLUMNS FROM `jrk_articles` [ RunTime:0.001647s ]
UPDATE `jrk_articles` SET `hits` = 1 WHERE `id` = 58239 [ RunTime:0.001367s ]
