{"id":5035,"date":"2021-02-03T00:36:19","date_gmt":"2021-02-02T16:36:19","guid":{"rendered":"https:\/\/damogame.cn\/wordpress\/?p=5035"},"modified":"2021-02-03T00:36:19","modified_gmt":"2021-02-02T16:36:19","slug":"malloc%e7%9a%84%e7%ba%bf%e7%a8%8b%e5%ae%89%e5%85%a8%e4%b8%8esignal%e4%bd%bf%e7%94%a8malloc%e7%9a%84%e9%99%b7%e9%98%b1%ef%bc%88%e5%86%85%e6%a0%b8%e6%80%81%e4%b8%8e%e7%94%a8%e6%88%b7%e6%80%81%e3%80%81","status":"publish","type":"post","link":"https:\/\/i007.cc\/wordpress\/archives\/5035","title":{"rendered":"malloc\u7684\u7ebf\u7a0b\u5b89\u5168\u4e0esignal\u4f7f\u7528malloc\u7684\u9677\u9631\uff08\u5185\u6838\u6001\u4e0e\u7528\u6237\u6001\u3001\u7cfb\u7edf\u8c03\u7528\u4e0eC\u5e93\u8c03\u7528\u3001\u53ef\u91cd\u5165\u4e0e\u4e0d\u53ef\u91cd\u5165\uff09"},"content":{"rendered":"<div class=\"article-header-box\">\n<div class=\"article-header\">\n<div class=\"article-title-box\"><\/div>\n<div class=\"article-info-box\">\n<div class=\"operating\"><a href=\"https:\/\/blog.csdn.net\/qq_40334837\/article\/details\/96423711\">\u539f\u6587\u5730\u5740<\/a><\/div>\n<div><\/div>\n<\/div>\n<\/div>\n<\/div>\n<article class=\"baidu_pl\">\n<div id=\"article_content\" class=\"article_content clearfix\">\n<div id=\"content_views\" class=\"htmledit_views\">\n<h2><a name=\"t0\"><\/a><a name=\"t0\"><\/a>\u524d\u8a00\uff1a\u4e3a\u4ec0\u4e48\u5199\u8fd9\u7bc7\u535a\u5ba2\uff1f<\/h2>\n<h2><a name=\"t1\"><\/a><a name=\"t1\"><\/a>\u539f\u56e0\uff1a\u4e3a\u4ec0\u4e48malloc\u672c\u8eab\u662f\u7ebf\u7a0b\u5b89\u5168\u51fd\u6570\uff08man\u624b\u518c\u4e5f\u8bf4\u660e\u4e86\uff09\uff0c\u4f46\u662fsignal\u4e2d\u4f7f\u7528\u5374\u4f1a\u4ea7\u751f\u9519\u8bef\u4e0e\u9677\u9631\uff0c\u7ebf\u7a0b\u662f\u8c03\u7528malloc\u5e76\u6267\u884c\uff0csignal\u4e5f\u662f\u6267\u884cmalloc\uff0c\u53ef\u662f\u4e3a\u4ec0\u4e48\u662f\u4e0d\u5b89\u5168\u7684\uff1f<\/h2>\n<h2><a name=\"t2\"><\/a><a name=\"t2\"><\/a>\u80cc\u666f\u77e5\u8bc6\uff1a\u8fd94\u4e2a\u90e8\u5206\u7559\u7ed9\u521d\u5b66\u8005\u81ea\u5df1\u67e5\u8d44\u6599\uff0c\u5185\u5bb9\u592a\u591a\uff0c\u8fd9\u91cc\u7b80\u5355\u53d9\u8ff0\u4e0b\uff0c\u8fd95\u5757\u641e\u6e05\u695a\u5c31\u80fd\u7406\u89e3\u4e86\uff0c\u800c\u4e14\u5bf9\u4e8elinux\u5b66\u4e60\u8fd9\u51e0\u90e8\u5206\u662f\u5fc5\u4e0d\u53ef\u5c11\u7684\uff0c\u73b0\u5728\u53ef\u80fd\u611f\u89c9\u7528\u4e0d\u4e0a\uff0c\u7b49\u771f\u6b63\u505a\u9879\u76ee\u4f60\u624d\u4f1a\u53d1\u73b0\u8fd9\u4e9b\u6982\u5ff5\u6709\u591a\u91cd\u8981\u3002<\/h2>\n<h3><a name=\"t3\"><\/a><a name=\"t3\"><\/a>\uff081\uff09\u5185\u6838\u6001\u4e0e\u7528\u6237\u6001<\/h3>\n<h3><a name=\"t4\"><\/a><a name=\"t4\"><\/a>\uff082\uff09\u7cfb\u7edf\u8c03\u7528\u4e0eC\u5e93\u8c03\u7528<\/h3>\n<h3><a name=\"t5\"><\/a><a name=\"t5\"><\/a>\uff083\uff09\u53ef\u91cd\u5165\u4e0e\u4e0d\u53ef\u91cd\u5165<\/h3>\n<h3><a name=\"t6\"><\/a><a name=\"t6\"><\/a>\uff084\uff09\u5185\u6838\u5bf9\u4fe1\u53f7\u7684\u5904\u7406\u65b9\u6cd5<\/h3>\n<h3><a name=\"t7\"><\/a><a name=\"t7\"><\/a>\uff085\uff09\u7cfb\u7edf\u8c03\u7528\u51fd\u6570\u5185\u90e8\u7684\u9501<\/h3>\n<h3><a name=\"t8\"><\/a><a name=\"t8\"><\/a>\uff086\uff09\u540c\u6b65\u4e0e\u5f02\u6b65<\/h3>\n<h2><a name=\"t9\"><\/a><a name=\"t9\"><\/a>1\u3001\u7cfb\u7edf\u8c03\u7528\u51fd\u6570\u7684\u7ebf\u7a0b\u5b89\u5168\u4e0e\u53ef\u91cd\u5165\u6027<\/h2>\n<p>\uff081\uff09\u5728man\u624b\u518c\u4e2d\uff0c\u4e0e\u7cfb\u7edf\u8c03\u7528\u6709\u5173\u7684\u51fd\u6570\u90fd\u4f1a\u8bf4\u660e\u8be5\u51fd\u6570\u662f\u5426\u7ebf\u7a0b\u5b89\u5168\uff0c\u6240\u4ee5\u8fd9\u4e5f\u662f\u6211\u4eec\u5199\u4ee3\u7801\u9700\u8981\u5173\u6ce8\u7684\uff0c\u800c\u7ebf\u7a0b\u5b89\u5168\u4e0e\u51fd\u6570\u662f\u5426\u53ef\u91cd\u5165\u6709\u5f88\u5927\u5173\u7cfb\uff0c\u51fd\u6570\u53ef\u91cd\u5165\u4e00\u5b9a\u662f\u7ebf\u7a0b\u5b89\u5168\u7684\uff0c\u7ebf\u7a0b\u5b89\u5168\u4e0d\u4e00\u5b9a\u662f\u53ef\u91cd\u5165\u51fd\u6570\uff0c\u6bd4\u5982maloc\u4f7f\u7528\u9012\u5f52\u9501\u5b9e\u73b0\u4e86\u7ebf\u7a0b\u5b89\u5168\uff0c\u4f46\u5b83\u662f\u4e0d\u53ef\u91cd\u5165\u51fd\u6570\uff0c\u6240\u4ee5\u4e0d\u53ef\u91cd\u5165\u51fd\u6570\u53ef\u4ee5\u901a\u8fc7\u5185\u6838\u9501\u5b9e\u73b0\u7ebf\u7a0b\u5b89\u5168\uff08\u9501\u662f\u7cfb\u7edf\u8c03\u7528\uff0c\u6240\u4ee5\u5de5\u4f5c\u5728\u5185\u6838\u6001\uff0c\u4e5f\u53eb\u5185\u6838\u9501\uff09\uff0c\u8fd8\u6709\u5f88\u591a\u51fd\u6570\u4e5f\u662f\u8fd9\u6837\u5b9e\u73b0\u7ebf\u7a0b\u5b89\u5168\u7684\u3002<\/p>\n<h2><a name=\"t10\"><\/a><a name=\"t10\"><\/a>2\u3001\u5185\u6838\u5904\u7406\u4fe1\u53f7\u5185\u51fd\u6570\u673a\u5236\u4e0e\u7ebf\u7a0b\u5904\u7406\u51fd\u6570\u673a\u5236\u7684\u533a\u522b<\/h2>\n<h3><a name=\"t11\"><\/a><a name=\"t11\"><\/a>2.1 \u4fe1\u53f7<\/h3>\n<h3><a name=\"t12\"><\/a><a name=\"t12\"><\/a>\u4fe1\u53f7\u8be6\u7ec6\u4ecb\u7ecd\u8be5\u535a\u5ba2<a href=\"https:\/\/blog.csdn.net\/edonlii\/article\/details\/8472382\">https:\/\/blog.csdn.net\/edonlii\/article\/details\/8472382<\/a><\/h3>\n<p><strong>1\u3001\u57fa\u672c\u6982\u5ff5<\/strong><\/p>\n<p>\u8f6f\u4e2d\u65ad\u4fe1\u53f7\uff08signal\uff0c\u53c8\u7b80\u79f0\u4e3a\u4fe1\u53f7\uff09\u7528\u6765\u901a\u77e5\u8fdb\u7a0b\u53d1\u751f\u4e86\u5f02\u6b65\u4e8b\u4ef6\u3002\u8fdb\u7a0b\u4e4b\u95f4\u53ef\u4ee5\u4e92\u76f8\u901a\u8fc7\u7cfb\u7edf\u8c03\u7528kill\u53d1\u9001\u8f6f\u4e2d\u65ad\u4fe1\u53f7\u3002\u5185\u6838\u4e5f\u53ef\u4ee5\u56e0\u4e3a\u5185\u90e8\u4e8b\u4ef6\u800c\u7ed9\u8fdb\u7a0b\u53d1\u9001\u4fe1\u53f7\uff0c\u901a\u77e5\u8fdb\u7a0b\u53d1\u751f\u4e86\u67d0\u4e2a\u4e8b\u4ef6\u3002\u6ce8\u610f\uff0c\u4fe1\u53f7\u53ea\u662f\u7528\u6765\u901a\u77e5\u67d0\u8fdb\u7a0b\u53d1\u751f\u4e86\u4ec0\u4e48\u4e8b\u4ef6\uff0c\u5e76\u4e0d\u7ed9\u8be5\u8fdb\u7a0b\u4f20\u9012\u4efb\u4f55\u6570\u636e\u3002<\/p>\n<p>\u6536\u5230\u4fe1\u53f7\u7684\u8fdb\u7a0b\u5bf9\u5404\u79cd\u4fe1\u53f7\u6709\u4e0d\u540c\u7684\u5904\u7406\u65b9\u6cd5\u3002\u5904\u7406\u65b9\u6cd5\u53ef\u4ee5\u5206\u4e3a\u4e09\u7c7b\uff1a\u7b2c\u4e00\u79cd\u662f\u7c7b\u4f3c\u4e2d\u65ad\u7684\u5904\u7406\u7a0b\u5e8f\uff0c\u5bf9\u4e8e\u9700\u8981\u5904\u7406\u7684\u4fe1\u53f7\uff0c\u8fdb\u7a0b\u53ef\u4ee5\u6307\u5b9a\u5904\u7406\u51fd\u6570\uff0c\u7531\u8be5\u51fd\u6570\u6765\u5904\u7406\u3002\u7b2c\u4e8c\u79cd\u65b9\u6cd5\u662f\uff0c\u5ffd\u7565\u67d0\u4e2a\u4fe1\u53f7\uff0c\u5bf9\u8be5\u4fe1\u53f7\u4e0d\u505a\u4efb\u4f55\u5904\u7406\uff0c\u5c31\u8c61\u672a\u53d1\u751f\u8fc7\u4e00\u6837\u3002\u7b2c\u4e09\u79cd\u65b9\u6cd5\u662f\uff0c\u5bf9\u8be5\u4fe1\u53f7\u7684\u5904\u7406\u4fdd\u7559\u7cfb\u7edf\u7684\u9ed8\u8ba4\u503c\uff0c\u8fd9\u79cd\u7f3a\u7701\u64cd\u4f5c\uff0c\u5bf9\u5927\u90e8\u5206\u7684\u4fe1\u53f7\u7684\u7f3a\u7701\u64cd\u4f5c\u662f\u4f7f\u5f97\u8fdb\u7a0b\u7ec8\u6b62\u3002\u8fdb\u7a0b\u901a\u8fc7\u7cfb\u7edf\u8c03\u7528signal\u6765\u6307\u5b9a\u8fdb\u7a0b\u5bf9\u67d0\u4e2a\u4fe1\u53f7\u7684\u5904\u7406\u884c\u4e3a\u3002<\/p>\n<p><strong>2\u3001\u5185\u6838\u5bf9\u4fe1\u53f7\u7684\u57fa\u672c\u5904\u7406\u65b9\u6cd5\uff08\u91cd\u70b9\u7406\u89e3\u8fd9\u90e8\u5206\uff0c\u4e0d\u61c2\u7684\u53bb\u767e\u5ea6\uff0c\u76f4\u5230\u7406\u89e3\uff09<\/strong><\/p>\n<p>\uff081\uff09\u5185\u6838\u5904\u7406\u4e00\u4e2a\u8fdb\u7a0b\u6536\u5230\u7684\u4fe1\u53f7\u7684\u65f6\u673a\u662f\u5728\u4e00\u4e2a\u8fdb\u7a0b\u4ece\u5185\u6838\u6001\u8fd4\u56de\u7528\u6237\u6001\u65f6\u3002\u6240\u4ee5\uff0c\u5f53\u4e00\u4e2a\u8fdb\u7a0b\u5728\u5185\u6838\u6001\u4e0b\u8fd0\u884c\u65f6\uff0c\u8f6f\u4e2d\u65ad\u4fe1\u53f7\u5e76\u4e0d\u7acb\u5373\u8d77\u4f5c\u7528\uff0c\u8981\u7b49\u5230\u5c06\u8fd4\u56de\u7528\u6237\u6001\u65f6\u624d\u5904\u7406\uff0c\u6bd4\u5982\u7ebf\u7a0b\u4e2d\u7cfb\u7edf\u8c03\u7528malloc\u7533\u8bf7\u5185\u5b58\uff0c\u6240\u4ee5\u4ece\u7528\u6237\u6001\u8fdb\u5165\u4e86\u5185\u6838\u6001\uff0c\u73b0\u5728\u4fe1\u53f7\u53d1\u751f\uff0c\u8fd9\u65f6\u64cd\u4f5c\u7cfb\u7edf\u4f1a\u4ece\u5185\u6838\u6001\u8df3\u8f6c\u5230\u7528\u6237\u6001\u6267\u884csignal\u51fd\u6570\uff08signal\u51fd\u6570\u672c\u8eab\u662f\u5e94\u7528\u5c42\u7684\u4e00\u884c\u4ee3\u7801\u9700\u8981\u88ab\u8fd0\u884c\uff0c\u5c5e\u4e8e\u7528\u6237\u6001\uff0c\u5f53\u6267\u884c\u5230\u7ed1\u5b9a\u7684\u51fd\u6570\u65f6\uff0c\u51fd\u6570\u5185\u90e8\u6709\u7cfb\u7edf\u8c03\u7528\u51fd\u6570\uff0c\u7136\u540e\u8fdb\u5165\u5185\u6838\u6001\uff09\u3002\u8fdb\u7a0b\u6536\u5230\u4e00\u4e2a\u8981\u6355\u6349\u7684\u4fe1\u53f7\uff0c\u90a3\u4e48\u8fdb\u7a0b\u4ece\u5185\u6838\u6001\u8fd4\u56de\u7528\u6237\u6001\u65f6\u6267\u884c\u7528\u6237\u5b9a\u4e49\u7684\u51fd\u6570\uff0c\u800c\u4e14\u6267\u884c\u7528\u6237\u5b9a\u4e49\u7684\u51fd\u6570\u7684\u65b9\u6cd5\u5f88\u5de7\u5999\uff08\u8fd9\u4e2a\u51fd\u6570\u65f6signal\u51fd\u6570\u7ed1\u5b9a\u7684\u90a3\u4e2a\u5904\u7406\u4fe1\u53f7\u51fd\u6570\uff0c\u6bd4\u5982\u91cc\u9762\u51fa\u73b0malloc\u7cfb\u7edf\u8c03\u7528\uff09\uff0c\u5185\u6838\u662f\u5728\u7528\u6237\u6808\u4e0a\u521b\u5efa\u4e00\u4e2a\u65b0\u7684\u5c42\uff0c\u8be5\u5c42\u4e2d\u5c06\u8fd4\u56de\u5730\u5740\u7684\u503c\u8bbe\u7f6e\u6210\u7528\u6237\u5b9a\u4e49\u7684\u5904\u7406\u51fd\u6570\u7684\u5730\u5740\uff0c\u8fd9\u6837\u8fdb\u7a0b\u4ece\u5185\u6838\u8fd4\u56de\u5f39\u51fa\u6808\u9876\u65f6\u5c31\u8fd4\u56de\u5230\u7528\u6237\u5b9a\u4e49\u7684\u51fd\u6570\u5904\uff0c\u4ece\u51fd\u6570\u8fd4\u56de\u518d\u5f39\u51fa\u6808\u9876\u65f6\uff0c\u624d\u8fd4\u56de\u539f\u5148\u8fdb\u5165\u5185\u6838\u7684\u5730\u65b9\uff08\u7ebf\u7a0b\u4e2d\u8c03\u7528malloc\u6240\u5728\u5185\u6838\u6267\u884c\u5904\uff09\u3002\u8fd9\u6837\u505a\u7684\u539f\u56e0\u662f\u7528\u6237\u5b9a\u4e49\u7684\u5904\u7406\u51fd\u6570\u4e0d\u5e94\u8be5\u5728\u5185\u6838\u6001\u4e0b\u6267\u884c\uff0c\u6240\u4ee5\u4e00\u822c\u5728\u4fe1\u53f7\u5904\u7406\u51fd\u6570\u4e2d\uff0c\u6700\u597d\u4ec5\u4ec5\u7528\u6765\u6253\u5370\u4e00\u6761\u4fe1\u606f\uff0c\u7136\u540e\u4f7f\u7528longjmp\u6216\u8005exit\u9000\u51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