互斥对象的讲解，如何采用互斥对象来实现多线程的同步。如何利用命名互斥对象保证应用程序只有一个实例运行-Mutex object to explain how the use of mutex objects to realize multi-thread synchronization. How to use named mutex object to ensure that there is only one example of the application to run
SHOW FULL COLUMNS FROM `jrk_downrecords` [ RunTime:0.001311s ]
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:0.088376s ]
SHOW FULL COLUMNS FROM `jrk_tagrecords` [ RunTime:0.001192s ]
SELECT * FROM `jrk_tagrecords` WHERE `status` = 1 ORDER BY `num` DESC LIMIT 20 [ RunTime:0.001912s ]
SHOW FULL COLUMNS FROM `jrk_member` [ RunTime:0.001151s ]
SELECT `id`,`username`,`userhead`,`usertime` FROM `jrk_member` WHERE `status` = 1 ORDER BY `usertime` DESC LIMIT 10 [ RunTime:0.003651s ]
SHOW FULL COLUMNS FROM `jrk_searchrecords` [ RunTime:0.001055s ]
SELECT * FROM `jrk_searchrecords` WHERE `status` = 1 ORDER BY `num` DESC LIMIT 5 [ RunTime:0.003417s ]
SELECT aid,title,count(aid) as c FROM `jrk_downrecords` GROUP BY `aid` ORDER BY `c` DESC LIMIT 10 [ RunTime:0.014615s ]
SHOW FULL COLUMNS FROM `jrk_articles` [ RunTime:0.001730s ]
UPDATE `jrk_articles` SET `hits` = 1 WHERE `id` = 268876 [ RunTime:0.001382s ]
