{"id":79,"date":"2020-10-08T15:22:47","date_gmt":"2020-10-08T07:22:47","guid":{"rendered":"http:\/\/www.zhangjimin.com\/?p=79"},"modified":"2020-10-08T15:22:51","modified_gmt":"2020-10-08T07:22:51","slug":"linux%e7%b3%bb%e7%bb%9f%e5%87%bd%e6%95%b0%e5%ad%a6%e4%b9%a0","status":"publish","type":"post","link":"http:\/\/www.zhangjimin.com\/?p=79","title":{"rendered":"linux\u7cfb\u7edf\u51fd\u6570\u5b66\u4e60"},"content":{"rendered":"\n<p><code>\u7a0b\u5e8f<\/code>: \u6b7b\u7684, \u53ea\u4f1a\u5360\u7528\u78c1\u76d8\u7a7a\u95f4<br><code>\u8fdb\u7a0b<\/code>: \u6d3b\u7684,\u8fd0\u884c\u8d77\u6765\u7684\u7a0b\u5e8f,\u5360\u7528\u5185\u5b58,cpu\u7cfb\u7edf\u8d44\u6e90\u7b49<\/p>\n\n\n\n<p><strong>PCB\u8fdb\u7a0b\u63a7\u5236\u5757<\/strong><br>\u5c31\u662f\u4e00\u4e2a\u7ed3\u6784\u4f53<br><em>\u62e5\u6709\u7684\u76f8\u5173\u4fe1\u606f<\/em><br>&nbsp;&nbsp;\u8fdb\u7a0bid, \u6587\u4ef6\u63cf\u8ff0\u7b26, \u8fdb\u7a0b\u5de5\u4f5c\u76ee\u5f55, *umask\u63a9\u7801, \u4fe1\u53f7\u76f8\u5173\u4fe1\u606f\u8d44\u6e90, \u7528\u6237id\u548c\u7ec4id,<br>&nbsp;&nbsp;\u8fdb\u7a0b\u72b6\u6001: \u521d\u59cb\u6001, \u5c31\u7eea\u6001, \u8fd0\u884c\u6001, \u6302\u8d77\u6001, \u7ec8\u6b62\u6001<\/p>\n\n\n\n<p><strong><code>fork()<\/code>\u51fd\u6570<\/strong><br>\u521b\u5efa\u5b50\u8fdb\u7a0b, \u7236\u8fdb\u7a0b\u5404\u81ea\u8fd4\u56de.\u7236\u8fdb\u7a0b\u8fd4\u56de\u5b50\u8fdb\u7a0b<code>pid<\/code>, \u5b50\u8fdb\u7a0b\u8fd4\u56de<code>0<\/code><br>\u5934\u6587\u4ef6:<code>unistd.h<\/code><br>&nbsp;&nbsp;<br>\u7236\u5b50\u8fdb\u7a0b\u76f8\u540c:<br>&nbsp;&nbsp;\u521afork\u540e: data\u6bb5, text\u6bb5, \u5806, \u6808, \u73af\u5883\u53d8\u91cf, \u5bbf\u4e3b\u76ee\u5f55\u4f4d\u7f6e, \u8fdb\u7a0b\u5de5\u4f5c\u4f4d\u7f6e, \u4fe1\u53f7\u5904\u7406\u65b9\u5f0f<br>&nbsp;&nbsp;<br>\u7236\u5b50\u8fdb\u7a0b\u4e0d\u540c:<br>&nbsp;&nbsp;\u8fdb\u7a0bid, \u8fd4\u56de\u503c, \u5404\u81ea\u7684\u7236\u8fdb\u7a0b, \u8fdb\u7a0b\u521b\u5efa\u65f6\u95f4, \u95f9\u949f, \u672a\u51b3\u4fe1\u53f7\u96c6<br>&nbsp;&nbsp;<br>\u7236\u5b50\u8fdb\u7a0b\u5171\u4eab:<br>&nbsp;&nbsp;\u8bfb\u65f6\u5171\u4eab,\u5199\u65f6\u590d\u5236<br>&nbsp;&nbsp;\u6587\u4ef6\u63cf\u8ff0\u7b26, mmap\u6620\u5c04\u533a<br>&nbsp;&nbsp;<br><em>\u83b7\u53d6\u8fdb\u7a0b\u5404\u4e2a<code>id<\/code><\/em><br>&nbsp;&nbsp;<code>getpid()<\/code>:\u83b7\u53d6\u5f53\u524d\u8fdb\u7a0b<code>id<\/code><br>&nbsp;&nbsp;<code>getppid()<\/code>:\u83b7\u53d6\u7236\u8fdb\u7a0b\u7684<code>id<\/code><br>&nbsp;&nbsp;<code>getgid()<\/code>:\u83b7\u53d6\u5f53\u524d\u7ec4<code>id<\/code><\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u7a0b\u5e8f: \u6b7b\u7684, \u53ea\u4f1a\u5360\u7528\u78c1\u76d8\u7a7a\u95f4\u8fdb\u7a0b: \u6d3b\u7684,\u8fd0\u884c\u8d77\u6765\u7684\u7a0b\u5e8f,\u5360\u7528\u5185\u5b58,cpu\u7cfb\u7edf\u8d44\u6e90\u7b49 PCB\u8fdb\u7a0b\u63a7\u5236\u5757\u5c31\u662f\u4e00\u4e2a\u7ed3\u6784\u4f53\u62e5\u6709\u7684\u76f8\u5173\u4fe1\u606f&nbsp;&nbsp;\u8fdb\u7a0bid, \u6587\u4ef6\u63cf\u8ff0\u7b26, \u8fdb\u7a0b\u5de5\u4f5c\u76ee\u5f55, *umask\u63a9\u7801, \u4fe1\u53f7\u76f8\u5173\u4fe1\u606f\u8d44\u6e90,  [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[],"class_list":["post-79","post","type-post","status-publish","format-standard","hentry","category-uncategorized"],"_links":{"self":[{"href":"http:\/\/www.zhangjimin.com\/index.php?rest_route=\/wp\/v2\/posts\/79","targetHints":{"allow":["GET"]}}],"collection":[{"href":"http:\/\/www.zhangjimin.com\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/www.zhangjimin.com\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/www.zhangjimin.com\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"http:\/\/www.zhangjimin.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=79"}],"version-history":[{"count":1,"href":"http:\/\/www.zhangjimin.com\/index.php?rest_route=\/wp\/v2\/posts\/79\/revisions"}],"predecessor-version":[{"id":80,"href":"http:\/\/www.zhangjimin.com\/index.php?rest_route=\/wp\/v2\/posts\/79\/revisions\/80"}],"wp:attachment":[{"href":"http:\/\/www.zhangjimin.com\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=79"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/www.zhangjimin.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=79"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/www.zhangjimin.com\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=79"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}