public class ShareResource {
\nprivate int n = 0;
\npublic synchronized void p() throws InterruptedException {
\nwhile (n > 0) {
\nwait();
\n}
\nn++;
\n}
\npublic synchronized void r() {
\nn = 0;
\nnoti.fyAll();
\n}
\n}
\n\u5982\u679c\u6211\u4f7f\u7528\u6b64\u8d44\u6e90\u542f\u52a8\u4e86\u4e24\u4e2a\u7ebf\u7a0b\uff0c\u5e76\u4e14\u5b83\u4eec\u90fd\u5728wait()\u5904\uff0c\u5e76\u4e14\u6211\u5728\u8d44\u6e90\u4e2d\u8c03\u7528\u4e86\u65b9\u6cd5r(), \u8fd9\u662f\u5426\u4f1a\u5728\u4e0d\u68c0\u67e5\u6761\u4ef6\u7684\u60c5\u51b5\u4e0b\u5524\u9192\u4e24\u4e2a\u7ebf\u7a0b\uff1f
\n\u662f\u5426\u5728\u4e24\u4e2a\u7ebf\u7a0b\u4e2d\u8bfb\u53d6\u4ee3\u7801\u76f4\u5230\u65b9\u6cd5\u7ed3\u675f\uff1f\u5728\u201c\u76f8\u540c\u201d\u65f6\u95f4\uff1f
\n\u6700\u4f73\u7b54\u6848<\/p>\n
Would the code be read until the end of the method in both threads? At the "same" time?
\n\u4e0d\uff0c\u4e0d.notifyAll()\u7684\u5de5\u4f5c\u65b9\u5f0f\u662f\uff0c\u6bcf\u4e2a\u5bf9\u8c61\u4ecewait()\u5524\u9192\u540e\u6700\u7ec8\u90fd\u5c06\u6267\u884c\u5176\u4ee3\u7801\uff0c\u4f46\u662f\uff0c \u4e00\u6b21\u53ea\u80fd\u6267\u884c\u4e00\u4e2a\u7ebf\u7a0b,\u56e0\u6b64\uff0c\u4e00\u4e2a\u7ebf\u7a0b\u901a\u8fc7\u8c03\u7528r()\u9000\u51fa\u5faa\u73af\u540e\uff0c\u5b83\u4f1a\u9012\u589e\u8ba1\u6570\u5668\uff0c\u56e0\u6b64\u4e0d \u4f1a\u91ca\u653e\u53e6\u4e00\u4e2a\u7ebf\u7a0b\uff0c\u56e0\u6b64\uff0c\u53ea\u6709\u4e00\u4e2a\u7ebf\u7a0b\u6267\u884c\u5230\u6700\u540e-\u4e0d\u5728\u4e24\u4e2a\u7ebf\u7a0b\u4e2d\u6267\u884c.
\nIf I started two threads with this resource and they are both at wait() and I called the method r() in the resource would this wake both threads without checking the condition?
\n\u6211\u5047\u8bbe\u60a8\u7684\u610f\u601d\u662f\u5f53\u60a8\u7684\u610f\u601d\u662f\u201c\u4e0d\u68c0\u67e5\u6761\u4ef6\u201d\u65f6\u9000\u51fawhile\u5faa\u73af.\u5982\u4e0a\u6240\u793a\uff0c\u4e24\u4e2a\u7ebf\u7a0b\u90fd\u4e0d \u662f\u8fd9\u79cd\u60c5\u51b5.
\nTL; DR\uff1a notifyAll()-\u6b21\u53ea\u5141\u8bb8\u4e00\u4e2a\u7ebf\u7a0b\u6267\u884c\uff0c\u4f46\u662f\u6240\u6709\u8fd9\u4e9b\u7ebf\u7a0b\u6700\u7ec8\u90fd\u5c06\u6700\u7ec8\u6267\u884c.<\/p>\n","protected":false},"excerpt":{"rendered":"
public class ShareResource { private int n = 0; public […]<\/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-10390","post","type-post","status-publish","format-standard","hentry","category-java"],"_links":{"self":[{"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/posts\/10390","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=10390"}],"version-history":[{"count":1,"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/posts\/10390\/revisions"}],"predecessor-version":[{"id":10391,"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/posts\/10390\/revisions\/10391"}],"wp:attachment":[{"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/media?parent=10390"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/categories?post=10390"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/tags?post=10390"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}