{"id":10729,"date":"2023-11-28T21:42:25","date_gmt":"2023-11-28T13:42:25","guid":{"rendered":"https:\/\/wx.kaifamiao.info\/?p=10729"},"modified":"2023-11-28T21:42:29","modified_gmt":"2023-11-28T13:42:29","slug":"java-zhong-synchronized-he-volatile-de-qu-bie-shi","status":"publish","type":"post","link":"http:\/\/wx.kaifamiao.info\/index.php\/2023\/11\/28\/java-zhong-synchronized-he-volatile-de-qu-bie-shi\/","title":{"rendered":"Java \u4e2d synchronized \u548c volatile \u7684\u533a\u522b\u662f\u4ec0\u4e48\uff1f"},"content":{"rendered":"<p>synchronized\u8868\u793a\u53ea\u6709\u4e00\u4e2a\u7ebf\u7a0b\u53ef\u4ee5\u83b7\u53d6\u4f5c\u7528\u5bf9\u8c61\u7684\u9501\uff0c\u6267\u884c\u4ee3\u7801\uff0c\u963b\u585e\u5176\u4ed6\u7ebf\u7a0b\u3002 volatile\u8868\u793a\u53d8\u91cf\u5728CPU\u7684\u5bc4\u5b58\u5668\u4e2d\u662f\u4e0d\u786e\u5b9a\u7684\uff0c\u5fc5\u987b\u4ece\u4e3b\u5b58\u4e2d\u8bfb\u53d6\u3002\u4fdd\u8bc1\u591a\u7ebf\u7a0b\u73af\u5883\u4e0b\u53d8 \u91cf\u7684\u53ef\u89c1\u6027;\u7981\u6b62\u6307\u4ee4\u91cd\u6392\u5e8f\u3002<br \/>\n\u533a\u522b<br \/>\n1\u3001\tvolatile\u662f\u53d8\u91cf\u4fee\u9970\u7b26;synchronized\u53ef\u4ee5\u4fee\u9970\u7c7b\u3001\u65b9\u6cd5\u3001\u53d8\u91cf\u3002<br \/>\n2\u3001\tvolatile\u4ec5\u80fd\u5b9e\u73b0\u53d8\u91cf\u7684\u4fee\u6539\u53ef\u89c1\u6027\uff0c\u4e0d\u80fd\u4fdd\u8bc1\u539f\u5b50\u6027;\u800csynchronized\u5219\u53ef\u4ee5\u4fdd\u8bc1 \u53d8\u91cf\u7684\u4fee\u6539\u53ef\u89c1\u6027\u548c\u539f\u5b50\u6027\u3002<br \/>\n3\u3001\tvolatile\u4e0d\u4f1a\u9020\u6210\u7ebf\u7a0b\u7684\u963b\u585e;synchronized\u53ef\u80fd\u4f1a\u9020\u6210\u7ebf\u7a0b\u7684\u963b\u585e\u3002<br \/>\n4\u3001\tvolatile\u6807\u8bb0\u7684\u53d8\u91cf\u4e0d\u4f1a\u88ab\u7f16\u8bd1\u5668\u4f18\u5316;synchronized\u6807\u8bb0\u7684\u53d8\u91cf\u53ef\u4ee5\u88ab\u7f16\u8bd1\u5668\u4f18\u5316\u3002<br \/>\n5\u3001\tvolatile\u5173\u952e\u5b57\u662f\u7ebf\u7a0b\u540c\u6b65\u7684\u8f7b\u91cf\u7ea7\u5b9e\u73b0\uff0c\u6240\u4ee5volatile\u6027\u80fd\u80af\u5b9a\u6bd4synchronized\u5173 \u952e\u5b57\u8981\u597d\u3002<br \/>\n\u4f46\u662fvolatile\u5173\u952e\u5b57\u53ea\u80fd\u7528\u4e8e\u53d8\u91cf\u800csynchronized\u5173\u952e\u5b57\u53ef\u4ee5\u4fee\u9970\u65b9\u6cd5\u4ee5\u53ca\u4ee3\u7801\u5757\u3002 synchronized\u5173\u952e\u5b57\u5728JavaSEl.6\u4e4b\u540e\u8fdb\u884c\u4e86\u4e3b\u8981\u5305\u62ec\u4e3a\u4e86\u51cf\u5c11\u83b7\u5f97\u9501\u548c\u91ca\u653e\u9501\u5e26\u6765\u7684\u6027\u80fd \u6d88\u8017\u800c\u5f15\u5165\u7684\u504f\u5411\u9501\u548c\u8f7b\u91cf\u7ea7\u9501\u4ee5\u53ca\u5176\u5b83\u5404\u79cd\u4f18\u5316\u4e4b\u540e\u6267\u884c\u6548\u7387\u6709\u4e86\u663e\u8457\u63d0\u5347\uff0c\u5b9e\u9645\u5f00\u53d1\u4e2d\u4f7f \u7528synchronized\u5173\u952e\u5b57\u7684\u573a\u666f\u8fd8\u662f\u66f4\u591a\u4e00\u4e9b\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>synchronized\u8868\u793a\u53ea\u6709\u4e00\u4e2a\u7ebf\u7a0b\u53ef\u4ee5\u83b7\u53d6\u4f5c\u7528\u5bf9\u8c61\u7684\u9501\uff0c\u6267\u884c\u4ee3\u7801\uff0c\u963b\u585e\u5176\u4ed6\u7ebf\u7a0b\u3002 volatile\u8868\u793a\u53d8 [&hellip;]<\/p>\n","protected":false},"author":7,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[118],"tags":[],"class_list":["post-10729","post","type-post","status-publish","format-standard","hentry","category-java"],"_links":{"self":[{"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/posts\/10729","targetHints":{"allow":["GET"]}}],"collection":[{"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/users\/7"}],"replies":[{"embeddable":true,"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/comments?post=10729"}],"version-history":[{"count":1,"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/posts\/10729\/revisions"}],"predecessor-version":[{"id":10730,"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/posts\/10729\/revisions\/10730"}],"wp:attachment":[{"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/media?parent=10729"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/categories?post=10729"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/tags?post=10729"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}