{"id":230,"date":"2006-04-26T11:10:09","date_gmt":"2006-04-26T11:10:09","guid":{"rendered":"http:\/\/fanhaijun.com\/?p=230"},"modified":"2006-04-26T11:10:09","modified_gmt":"2006-04-26T11:10:09","slug":"%e7%94%9f%e4%ba%a7%e8%80%85%e4%b8%8e%e6%b6%88%e8%b4%b9%e8%80%85%e9%97%ae%e9%a2%98","status":"publish","type":"post","link":"https:\/\/fanhaijun.com\/?p=230","title":{"rendered":"\u751f\u4ea7\u8005\u4e0e\u6d88\u8d39\u8005\u95ee\u9898"},"content":{"rendered":"<p>\u751f\u4ea7\u8005\u4e0e\u6d88\u8d39\u8005\u95ee\u9898<br \/>1\u751f\u4ea7\u8005\u4e0e\u6d88\u8d39\u8005\u95ee\u9898<br \/>int&nbsp;full&nbsp;=&nbsp;0;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;\/&nbsp;\u6ee1\u7f13\u51b2\u5355\u5143\u7684\u6570\u76ee<br \/>int&nbsp;mutex&nbsp;=&nbsp;1;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;\/&nbsp;\u5bf9\u7f13\u51b2\u533a\u8fdb\u884c\u64cd\u4f5c\u7684\u4e92\u65a5\u4fe1\u53f7\u91cf<br \/>void&nbsp;producer(&nbsp;void&nbsp;);<br \/>void&nbsp;consumer(&nbsp;void&nbsp;);<br \/>int&nbsp;main(&nbsp;void&nbsp;)<br \/>{<br \/>&nbsp;&nbsp;&nbsp;cobegin<br \/>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;producer();<br \/>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;consumer();<br \/>&nbsp;&nbsp;&nbsp;coend<br \/>}<br \/>void&nbsp;produceri(&nbsp;void&nbsp;)<br \/>{<br \/>&nbsp;&nbsp;&nbsp;while(&nbsp;\u751f\u4ea7\u672a\u5b8c\u6210&nbsp;)&nbsp;&nbsp;{<br \/>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;\u751f\u4ea7\u4e00\u4e2a\u4ea7\u54c1\uff1b<br \/>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;p(&nbsp;mutex&nbsp;);<br \/>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;\u9001\u4e00\u4e2a\u4ea7\u54c1\u5230\u6709\u754c\u7f13\u51b2\u533a\uff1b<br \/>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;v(&nbsp;mutex&nbsp;);<br \/>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;v(&nbsp;full&nbsp;);<br \/>&nbsp;&nbsp;&nbsp;}<br \/>}<br \/>consumerj<br \/>{<br \/>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;while(&nbsp;\u8fd8\u8981\u7ee7\u7eed\u6d88\u8d39&nbsp;)&nbsp;&nbsp;{<br \/>p(&nbsp;full&nbsp;);<br \/>p(&nbsp;mutex&nbsp;);<br \/>\u4ece\u6709\u754c\u7f13\u51b2\u533a\u4e2d\u53d6\u4ea7\u54c1\uff1b<br \/>v(&nbsp;mutex&nbsp;);<br \/>\u6d88\u8d39\u4e00\u4e2a\u4ea7\u54c1\uff1b<br \/>&nbsp;&nbsp;&nbsp;}<br \/>}<\/p>\n<p>2&nbsp;\u6709\u754c\u7f13\u51b2\u95ee\u9898<br \/>\u6709m&nbsp;\u4e2a\u751f\u4ea7\u8005\u548ck&nbsp;\u4e2a\u6d88\u8d39\u8005\uff0c\u5171\u4eab\u5b58\u653en&nbsp;\u4e2a\u4ea7\u54c1\u7684\u7f13\u51b2\u5355\u5143\u3002\u7528PV&nbsp;\u64cd\u4f5c\u8fdb\u884c\u63a7\u5236<br \/>\u7b2c\u4e00\u79cd\u7b97\u6cd5\uff1a\u4efb\u610f\u65f6\u523b\uff0c\u540c\u65f6\u4ec5\u5141\u8bb81\u4e2a\u751f\u4ea7\u8005\u548c1\u4e2a\u6d88\u8d39\u8005\u8fdb\u5165\u7684\u7b97\u6cd5<br \/>int&nbsp;full&nbsp;=&nbsp;0;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;\/&nbsp;\u6ee1\u7f13\u51b2\u5355\u5143\u7684\u6570\u76ee<br \/>int&nbsp;empty&nbsp;=&nbsp;n;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;\/&nbsp;\u7a7a\u7f13\u51b2\u5355\u5143\u7684\u6570\u76ee<br \/>int&nbsp;mutex1&nbsp;=&nbsp;1;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;\/&nbsp;\u5bf9\u6709\u754c\u7f13\u51b2\u533a\u8fdb\u884c\u64cd\u4f5c\u7528\u4e8e\u751f\u4ea7\u8005\u95f4\u7684\u4e92\u65a5\u4fe1\u53f7\u91cf<br \/>int&nbsp;mutex2&nbsp;=&nbsp;1;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;\/&nbsp;\u5bf9\u6709\u754c\u7f13\u51b2\u533a\u8fdb\u884c\u64cd\u4f5c\u7528\u4e8e\u6d88\u8d39\u8005\u95f4\u7684\u4e92\u65a5\u4fe1\u53f7\u91cf<br \/>void&nbsp;produceri(&nbsp;void&nbsp;);<br \/>void&nbsp;consumerj(&nbsp;void&nbsp;);<br \/>int&nbsp;main(&nbsp;void&nbsp;)<br \/>{<br \/>&nbsp;&nbsp;&nbsp;cobegin<br \/>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;produceri();&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;\/&nbsp;i&nbsp;=&nbsp;1,2,\u2026,m<br \/>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;consumerj();&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;\/&nbsp;j&nbsp;=&nbsp;1,2,\u2026,k<br \/>&nbsp;&nbsp;&nbsp;coend<br \/>}<br \/>void&nbsp;produceri(&nbsp;void&nbsp;)<br \/>{<br \/>&nbsp;&nbsp;&nbsp;while(&nbsp;\u751f\u4ea7\u672a\u5b8c\u6210&nbsp;)&nbsp;&nbsp;{<br \/>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;\u751f\u4ea7\u4e00\u4e2a\u4ea7\u54c1\uff1b<br \/>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;p(&nbsp;empty&nbsp;);<br \/>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;p(&nbsp;mutex1&nbsp;);<br \/>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;\u9001\u4e00\u4e2a\u4ea7\u54c1\u5230\u6709\u754c\u7f13\u51b2\u533a\uff1b<br \/>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;v(&nbsp;mutex1&nbsp;);<br \/>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;v(&nbsp;full&nbsp;);<br \/>&nbsp;&nbsp;&nbsp;}<br \/>}<br \/>viod&nbsp;consumerj(&nbsp;void&nbsp;){<br \/>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;while(&nbsp;\u8fd8\u8981\u7ee7\u7eed\u6d88\u8d39&nbsp;)&nbsp;&nbsp;{<br \/>p(&nbsp;full&nbsp;);<br \/>p(&nbsp;mutex2&nbsp;);<br \/>\u4ece\u6709\u754c\u7f13\u51b2\u533a\u4e2d\u53d6\u4ea7\u54c1\uff1b<br \/>v(&nbsp;mutex2&nbsp;);<br \/>v(&nbsp;empty&nbsp;);<br \/>\u6d88\u8d39\u4e00\u4e2a\u4ea7\u54c1\uff1b<br \/>&nbsp;&nbsp;&nbsp;}<br \/>}<br \/>\u7b2c\u4e8c\u79cd\u7b97\u6cd5\uff1a\u4efb\u610f\u65f6\u523b\uff0c\u53ea\u5141\u8bb81\u4e2a\u751f\u4ea7\u8005\u62161\u4e2a\u6d88\u8d39\u8005\u8fdb\u5165\u7684\u7b97\u6cd5<br \/>int&nbsp;full&nbsp;=&nbsp;0;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;\/&nbsp;\u6ee1\u7f13\u51b2\u5355\u5143\u7684\u6570\u76ee<br \/>int&nbsp;empty&nbsp;=&nbsp;n;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;\/&nbsp;\u7a7a\u7f13\u51b2\u5355\u5143\u7684\u6570\u76ee<br \/>int&nbsp;mutex&nbsp;=&nbsp;1;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;\/&nbsp;\u5bf9\u6709\u754c\u7f13\u51b2\u533a\u8fdb\u884c\u64cd\u4f5c\u7684\u4e92\u65a5\u4fe1\u53f7\u91cf<br \/>void&nbsp;produceri(&nbsp;void&nbsp;);<br \/>void&nbsp;consumerj(&nbsp;void&nbsp;);<br \/>int&nbsp;main(&nbsp;void&nbsp;)<br \/>{<br \/>&nbsp;&nbsp;&nbsp;cobegin<br \/>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;produceri();&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;\/&nbsp;i&nbsp;=&nbsp;1,2,\u2026,m<br \/>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;consumerj();&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;\/&nbsp;j&nbsp;=&nbsp;1,2,\u2026,k<br \/>&nbsp;&nbsp;&nbsp;coend<br \/>}<br \/>void&nbsp;produceri(&nbsp;void&nbsp;)<br \/>{<br \/>&nbsp;&nbsp;&nbsp;while(&nbsp;\u751f\u4ea7\u672a\u5b8c\u6210&nbsp;)&nbsp;&nbsp;{<br \/>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;\u751f\u4ea7\u4e00\u4e2a\u4ea7\u54c1\uff1b<br \/>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;p(&nbsp;empty&nbsp;);<br \/>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;p(&nbsp;mutex&nbsp;);<br \/>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;\u9001\u4e00\u4e2a\u4ea7\u54c1\u5230\u6709\u754c\u7f13\u51b2\u533a\uff1b<br \/>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;v(&nbsp;mutex&nbsp;);<br \/>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;v(&nbsp;full&nbsp;);<br \/>&nbsp;&nbsp;&nbsp;}<br \/>}<br \/>viod&nbsp;consumerj(&nbsp;void&nbsp;){<br \/>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;while(&nbsp;\u8fd8\u8981\u7ee7\u7eed\u6d88\u8d39&nbsp;)&nbsp;&nbsp;{<br \/>p(&nbsp;full&nbsp;);<br \/>p(&nbsp;mutex&nbsp;);<br \/>\u4ece\u6709\u754c\u7f13\u51b2\u533a\u4e2d\u53d6\u4ea7\u54c1\uff1b<br \/>v(&nbsp;mutex&nbsp;);<br \/>v(&nbsp;empty&nbsp;);<br \/>.<br \/>.<br \/>.<br \/>\u6d88\u8d39\u4e00\u4e2a\u4ea7\u54c1\uff1b<br \/>&nbsp;&nbsp;&nbsp;}<br \/>}<br \/>3&nbsp;\u65e0\u754c\u7f13\u51b2\u95ee\u9898<br \/>\u6709m&nbsp;\u4e2a\u751f\u4ea7\u8005\u548ck&nbsp;\u4e2a\u6d88\u8d39\u8005\uff0c\u5171\u4eab\u5b58\u653e\u65e0\u6570\u4e2a\u4ea7\u54c1\u7684\u7f13\u51b2\u5355\u5143\u3002\u7528PV&nbsp;\u64cd\u4f5c\u8fdb\u884c\u63a7\u5236<br \/>\u7b2c\u4e00\u79cd\u7b97\u6cd5\uff1a<br \/>int&nbsp;full&nbsp;=&nbsp;0;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;\/&nbsp;\u6ee1\u7f13\u51b2\u5355\u5143\u7684\u6570\u76ee<br \/>int&nbsp;mutex&nbsp;=&nbsp;1;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;\/&nbsp;\u5bf9\u6709\u754c\u7f13\u51b2\u533a\u8fdb\u884c\u64cd\u4f5c\u7684\u4e92\u65a5\u4fe1\u53f7\u91cf<br \/>void&nbsp;produceri(&nbsp;void&nbsp;);<br \/>void&nbsp;consumerj(&nbsp;void&nbsp;);<br \/>int&nbsp;main(&nbsp;void&nbsp;)<br \/>{<br \/>&nbsp;&nbsp;&nbsp;cobegin<br \/>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;produceri();&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;\/&nbsp;i&nbsp;=&nbsp;1,2,\u2026,m<br \/>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;consumerj();&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;\/&nbsp;j&nbsp;=&nbsp;1,2,\u2026,k<br \/>&nbsp;&nbsp;&nbsp;coend<br \/>}<br \/>void&nbsp;produceri(&nbsp;void&nbsp;)<br \/>{<br \/>&nbsp;&nbsp;&nbsp;while(&nbsp;\u751f\u4ea7\u672a\u5b8c\u6210&nbsp;)&nbsp;&nbsp;{<br \/>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;\u751f\u4ea7\u4e00\u4e2a\u4ea7\u54c1\uff1b<br \/>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;p(&nbsp;mutex&nbsp;);<br \/>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;\u9001\u4e00\u4e2a\u4ea7\u54c1\u5230\u6709\u754c\u7f13\u51b2\u533a\uff1b<br \/>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;v(&nbsp;mutex&nbsp;);<br \/>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;v(&nbsp;full&nbsp;);<br \/>&nbsp;&nbsp;&nbsp;}<br \/>}<br \/>viod&nbsp;consumerj(&nbsp;void&nbsp;)<br \/>{<br \/>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;while(&nbsp;\u8fd8\u8981\u7ee7\u7eed\u6d88\u8d39&nbsp;)&nbsp;&nbsp;{<br \/>p(&nbsp;full&nbsp;);<br \/>p(&nbsp;mutex&nbsp;);<br \/>\u4ece\u6709\u754c\u7f13\u51b2\u533a\u4e2d\u53d6\u4ea7\u54c1\uff1b<br \/>v(&nbsp;mutex&nbsp;);<br \/>\u6d88\u8d39\u4e00\u4e2a\u4ea7\u54c1\uff1b<br \/>&nbsp;&nbsp;&nbsp;}<br \/>}<br \/>\u7b2c\u4e8c\u79cd\u7b97\u6cd5\uff1a\u5b9a\u4e49\u4e00\u6b63\u6574\u6570&nbsp;N\uff0c\u8868\u793a\u7f13\u51b2\u533a\u5f53\u524d\u5b58\u653e\u7684\u4ea7\u54c1\u6570(&nbsp;\u5305\u62ec&nbsp;n&nbsp;=&nbsp;0&nbsp;)<br \/>int&nbsp;full&nbsp;=&nbsp;0;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;\/&nbsp;\u6ee1\u7f13\u51b2\u5355\u5143\u7684\u6570\u76ee<br \/>int&nbsp;mutex&nbsp;=&nbsp;1;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;\/&nbsp;\u5bf9\u6709\u754c\u7f13\u51b2\u533a\u8fdb\u884c\u64cd\u4f5c\u7684\u4e92\u65a5\u4fe1\u53f7\u91cf<br \/>void&nbsp;produceri(&nbsp;void&nbsp;);<br \/>void&nbsp;consumerj(&nbsp;void&nbsp;);<br \/>int&nbsp;main(&nbsp;void&nbsp;)<br \/>{<br \/>&nbsp;&nbsp;&nbsp;cobegin<br \/>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;produceri();&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;\/&nbsp;i&nbsp;=&nbsp;1,2,\u2026,m<br \/>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;consumerj();&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;\/&nbsp;j&nbsp;=&nbsp;1,2,\u2026,k<br \/>&nbsp;&nbsp;&nbsp;coend<br \/>}<br \/>void&nbsp;produceri(&nbsp;void&nbsp;)<br \/>{<br \/>&nbsp;&nbsp;&nbsp;while(&nbsp;\u751f\u4ea7\u672a\u5b8c\u6210&nbsp;)&nbsp;&nbsp;{<br \/>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;\u751f\u4ea7\u4e00\u4e2a\u4ea7\u54c1\uff1b<br \/>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;p(&nbsp;mutex&nbsp;);<br \/>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;\u9001\u4e00\u4e2a\u4ea7\u54c1\u5230\u6709\u754c\u7f13\u51b2\u533a\uff1b<br \/>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;if(&nbsp;n&nbsp;==&nbsp;1&nbsp;)<br \/>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;v(&nbsp;full&nbsp;);<br \/>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;v(&nbsp;mutex&nbsp;);<br \/>&nbsp;&nbsp;&nbsp;}<br \/>}<br \/>viod&nbsp;consumerj(&nbsp;void&nbsp;)<br \/>{<br \/>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;while(&nbsp;\u8fd8\u8981<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u751f\u4ea7\u8005\u4e0e\u6d88\u8d39\u8005\u95ee\u98981\u751f\u4ea7\u8005\u4e0e\u6d88\u8d39\u8005\u95ee\u9898int&nbsp;fu&hellip;<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_lmt_disableupdate":"","_lmt_disable":"","footnotes":""},"categories":[101],"tags":[],"class_list":["post-230","post","type-post","status-publish","format-standard","hentry","category-college-life"],"_links":{"self":[{"href":"https:\/\/fanhaijun.com\/index.php?rest_route=\/wp\/v2\/posts\/230","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/fanhaijun.com\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/fanhaijun.com\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/fanhaijun.com\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/fanhaijun.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=230"}],"version-history":[{"count":0,"href":"https:\/\/fanhaijun.com\/index.php?rest_route=\/wp\/v2\/posts\/230\/revisions"}],"wp:attachment":[{"href":"https:\/\/fanhaijun.com\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=230"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/fanhaijun.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=230"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/fanhaijun.com\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=230"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}