{"id":1434,"date":"2018-06-21T20:48:29","date_gmt":"2018-06-21T12:48:29","guid":{"rendered":"https:\/\/damogame.cn:15443\/wordpress\/?p=1434"},"modified":"2018-06-21T20:48:29","modified_gmt":"2018-06-21T12:48:29","slug":"boostshared_memory_object-%e5%85%b1%e4%ba%ab%e5%86%85%e5%ad%98","status":"publish","type":"post","link":"https:\/\/i007.cc\/wordpress\/archives\/1434","title":{"rendered":"Boost:shared_memory_object &#8212; \u5171\u4eab\u5185\u5b58"},"content":{"rendered":"<div class=\"postTitle\"><a id=\"cb_post_title_url\" href=\"https:\/\/www.cnblogs.com\/yeqing-vzenith\/p\/5175537.html\">Boost:shared_memory_object &#8212; \u5171\u4eab\u5185\u5b58<\/a><\/div>\n<div class=\"postText\">\n<div id=\"cnblogs_post_body\" class=\"blogpost-body\">\n<h3><a name=\"_Toc315882194\"><\/a>\u4ec0\u4e48\u662f\u5171\u4eab\u5185\u5b58<\/h3>\n<p>\u5171\u4eab\u5185\u5b58\u662f\u6700\u5feb\u901f\u7684\u8fdb\u7a0b\u95f4\u901a\u4fe1\u673a\u5236\u3002\u64cd\u4f5c\u7cfb\u7edf\u5728\u51e0\u4e2a\u8fdb\u7a0b\u7684\u5730\u5740\u7a7a\u95f4\u4e0a\u6620\u5c04\u4e00\u6bb5\u5185\u5b58\uff0c\u7136\u540e\u8fd9\u51e0\u4e2a\u8fdb\u7a0b\u53ef\u4ee5\u5728\u4e0d\u9700\u8981\u8c03\u7528\u64cd\u4f5c\u7cfb\u7edf\u51fd\u6570\u7684\u60c5\u51b5\u4e0b\u5728\u90a3\u6bb5\u5185\u5b58\u4e0a\u8fdb\u884c\u8bfb\/\u5199\u64cd\u4f5c\u3002\u4f46\u662f\uff0c\u5728\u8fdb\u7a0b\u8bfb\u5199\u5171\u4eab\u5185\u5b58\u65f6\uff0c\u6211\u4eec\u9700\u8981\u4e00\u4e9b\u540c\u6b65\u673a\u5236\u3002<\/p>\n<p>\u8003\u8651\u4e00\u4e0b\u670d\u52a1\u7aef\u8fdb\u7a0b\u4f7f\u7528\u7f51\u7edc\u673a\u5236\u5728\u540c\u4e00\u53f0\u673a\u5668\u4e0a\u53d1\u9001\u4e00\u4e2aHTML\u6587\u4ef6\u81f3\u5ba2\u6237\u7aef\u5c06\u4f1a\u53d1\u751f\u4ec0\u4e48\uff1a<\/p>\n<ul type=\"disc\">\n<li>\u670d\u52a1\u7aef\u5fc5\u987b\u8bfb\u53d6\u8fd9\u4e2a\u6587\u4ef6\u81f3\u5185\u5b58\uff0c\u7136\u540e\u5c06\u5176\u4f20\u81f3\u7f51\u7edc\u51fd\u6570\uff0c\u8fd9\u4e9b\u7f51\u7edc\u51fd\u6570\u62f7\u8d1d\u90a3\u6bb5\u5185\u5b58\u81f3\u64cd\u4f5c\u7cfb\u7edf\u7684\u5185\u90e8\u5185\u5b58\u3002<\/li>\n<li>\u5ba2\u6237\u7aef\u4f7f\u7528\u90a3\u4e9b\u7f51\u7edc\u51fd\u6570\u4ece\u64cd\u4f5c\u7cfb\u7edf\u7684\u5185\u90e8\u5185\u5b58\u62f7\u8d1d\u6570\u636e\u81f3\u5b83\u81ea\u5df1\u7684\u5185\u5b58\u3002<\/li>\n<\/ul>\n<p>\u5982\u4e0a\u6240\u793a\uff0c\u8fd9\u91cc\u5b58\u5728\u4e24\u6b21\u62f7\u8d1d\uff0c\u4e00\u6b21\u662f\u4ece\u5185\u5b58\u81f3\u7f51\u7edc\uff0c\u53e6\u4e00\u6b21\u662f\u4ece\u7f51\u7edc\u81f3\u5185\u5b58\u3002\u8fd9\u4e9b\u62f7\u8d1d\u4f7f\u7528\u64cd\u4f5c\u7cfb\u7edf\u8c03\u5ea6\uff0c\u8fd9\u5f80\u5f80\u5f00\u9500\u6bd4\u8f83\u5927\u3002\u5171\u4eab\u5185\u5b58\u907f\u514d\u4e86\u8fd9\u79cd\u5f00\u9500\uff0c\u4f46\u662f\u6211\u4eec\u9700\u8981\u5728\u8fdb\u7a0b\u95f4\u540c\u6b65\uff1a<\/p>\n<ul type=\"disc\">\n<li>\u670d\u52a1\u7aef\u6620\u5c04\u4e00\u4e2a\u5171\u4eab\u5185\u5b58\u81f3\u5176\u5730\u5740\u7a7a\u95f4\uff0c\u5e76\u4e14\u83b7\u53d6\u540c\u6b65\u673a\u5236\u3002\u670d\u52a1\u7aef\u4f7f\u7528\u540c\u6b65\u673a\u5236\u83b7\u53d6\u5bf9\u8fd9\u6bb5\u5185\u5b58\u7684\u72ec\u5360\u8bbf\u95ee\uff0c\u5e76\u4e14\u62f7\u8d1d\u6587\u4ef6\u81f3\u8fd9\u6bb5\u5185\u5b58\u4e2d\u3002<\/li>\n<li>\u5ba2\u6237\u7aef\u6620\u5c04\u8fd9\u4e2a\u5171\u4eab\u5185\u5b58\u81f3\u5176\u5730\u5740\u7a7a\u95f4\u3002\u7b49\u5f85\u670d\u52a1\u7aef\u91ca\u653e\u72ec\u5360\u8bbf\u95ee\uff0c\u7136\u540e\u4f7f\u7528\u6570\u636e\u3002<\/li>\n<\/ul>\n<p align=\"left\">\u4f7f\u7528\u5171\u4eab\u5185\u5b58\uff0c\u6211\u4eec\u80fd\u591f\u907f\u514d\u4e24\u6b21\u6570\u636e\u62f7\u8d1d\uff0c\u4f46\u662f\u6211\u4eec\u5fc5\u987b\u540c\u6b65\u5bf9\u5171\u4eab\u5185\u5b58\u6bb5\u7684\u8bbf\u95ee\u3002<\/p>\n<p align=\"left\">\n<h3><a name=\"t3\"><\/a><a name=\"\u521b\u5efa\u80fd\u5728\u8fdb\u7a0b\u95f4\u5171\u4eab\u7684\u5185\u5b58\u7247\u6bb5\"><\/a><a name=\"_Toc315882195\"><\/a>\u521b\u5efa\u80fd\u5728\u8fdb\u7a0b\u95f4\u5171\u4eab\u7684\u5185\u5b58\u7247\u6bb5<\/h3>\n<p align=\"left\">\u4e3a\u4e86\u4f7f\u7528\u5171\u4eab\u5185\u5b58\uff0c\u6211\u4eec\u5fc5\u987b\u6267\u884c\u4e24\u4e2a\u57fa\u672c\u6b65\u9aa4\uff1a<\/p>\n<ul type=\"disc\">\n<li>\u5411\u64cd\u4f5c\u7cfb\u7edf\u7533\u8bf7\u4e00\u5757\u80fd\u5728\u8fdb\u7a0b\u95f4\u5171\u4eab\u7684\u5185\u5b58\u3002\u4f7f\u7528\u8005\u80fd\u591f\u4f7f\u7528\u5171\u4eab\u5185\u5b58\u5bf9\u8c61\u521b\u5efa\/\u9500\u6bc1\/\u6253\u5f00\u8fd9\u4e2a\u5185\u5b58\uff1a\u4e00\u4e2a\u4ee3\u8868\u5185\u5b58\u7684\u5bf9\u8c61\uff0c\u8fd9\u6bb5\u5185\u5b58\u80fd\u540c\u65f6\u88ab\u6620\u5c04\u81f3\u591a\u4e2a\u8fdb\u7a0b\u7684\u5730\u5740\u7a7a\u95f4\u3002<\/li>\n<li>\u5c06\u8fd9\u4e2a\u5185\u5b58\u7684\u90e8\u5206\u6216\u5168\u90e8\u4e0e\u88ab\u8c03\u7528\u8fdb\u7a0b\u7684\u5730\u5740\u7a7a\u95f4\u8054\u7cfb\u8d77\u6765\u3002\u64cd\u4f5c\u7cfb\u7edf\u5728\u88ab\u8c03\u7528\u8fdb\u7a0b\u7684\u5730\u5740\u7a7a\u95f4\u4e0a\u5bfb\u627e\u4e00\u5757\u8db3\u591f\u5927\u7684\u5185\u5b58\u5730\u5740\u8303\u56f4\uff0c\u7136\u540e\u5c06\u8fd9\u4e2a\u5730\u5740\u8303\u56f4\u6807\u8bb0\u4e3a\u7279\u6b8a\u8303\u56f4\u3002\u5728\u5730\u5740\u8303\u56f4\u4e0a\u7684\u53d8\u5316\u5c06\u4f1a\u88ab\u53e6\u4e00\u4e2a\u6620\u5c04\u4e86\u540c\u6837\u7684\u5171\u4eab\u5185\u5b58\u5bf9\u8c61\u7684\u8fdb\u7a0b\u81ea\u52a8\u76d1\u6d4b\u5230\u3002<\/li>\n<\/ul>\n<p align=\"left\">\u4e00\u65e6\u6210\u529f\u5b8c\u6210\u4e86\u4ee5\u4e0a\u4e24\u6b65\uff0c\u8fdb\u7a0b\u53ef\u4ee5\u5f00\u59cb\u5728\u5730\u5740\u7a7a\u95f4\u4e0a\u8bfb\u5199\uff0c\u7136\u540e\u4e0e\u53e6\u4e00\u4e2a\u8fdb\u7a0b\u53d1\u9001\u548c\u63a5\u6536\u6570\u636e\u3002\u73b0\u5728\uff0c\u6211\u4eec\u770b\u770b\u5982\u4f55\u4f7f\u7528Boost.Interprocess\u505a\u8fd9\u4e9b\u4e8b\uff1a<\/p>\n<p align=\"left\">\n<h3><a name=\"t4\"><\/a><a name=\"\u5934\u6587\u4ef6_\u5171\u4eab\u5185\u5b58\"><\/a><a name=\"_Toc315882196\"><\/a>\u5934\u6587\u4ef6<\/h3>\n<p align=\"left\">\u4e3a\u4e86\u7ba1\u7406\u5171\u4eab\u5185\u5b58\uff0c\u4f60\u9700\u8981\u5305\u542b\u4e0b\u9762\u8fd9\u4e2a\u5934\u6587\u4ef6\uff1a<\/p>\n<div class=\"dp-highlighter bg_cpp\">\n<div class=\"bar\">\n<div class=\"tools\"><strong>[cpp]<\/strong>\u00a0<a class=\"ViewSource\" title=\"view plain\" href=\"http:\/\/blog.csdn.net\/great3779\/article\/details\/7226388\">view plain<\/a><span class=\"tracking-ad\" data-mod=\"popu_168\">\u00a0<a class=\"CopyToClipboard\" title=\"copy\" href=\"http:\/\/blog.csdn.net\/great3779\/article\/details\/7226388\" target=\"_blank\" rel=\"noopener\">copy<\/a><\/span><\/div>\n<\/div>\n<ol class=\"dp-cpp\" start=\"1\">\n<li class=\"alt\"><span class=\"preprocessor\">#include\u00a0&lt;boost\/interprocess\/shared_memory_object.hpp&gt;\u00a0\u00a0<\/span><\/li>\n<\/ol>\n<\/div>\n<div><\/div>\n<h3><a name=\"t5\"><\/a><a name=\"\u521b\u5efa\u5171\u4eab\u5185\u5b58\u7247\u6bb5\"><\/a><a name=\"_Toc315882197\"><\/a>\u521b\u5efa\u5171\u4eab\u5185\u5b58\u7247\u6bb5<\/h3>\n<p align=\"left\">\u5982\u4e0a\u8ff0\uff0c\u6211\u4eec\u5fc5\u987b\u4f7f\u7528\u7c7b\u00a0shared_memory_object\u00a0\u6765\u521b\u5efa\u3001\u6253\u5f00\u548c\u9500\u6bc1\u80fd\u88ab\u51e0\u4e2a\u8fdb\u7a0b\u6620\u5c04\u7684\u5171\u4eab\u5185\u5b58\u6bb5\u3002\u6211\u4eec\u53ef\u4ee5\u6307\u5b9a\u5171\u4eab\u5185\u5b58\u5bf9\u8c61\u7684\u8bbf\u95ee\u6a21\u5f0f\uff08\u53ea\u8bfb\u6216\u8bfb\u5199\uff09\uff0c\u5c31\u597d\u50cf\u5b83\u662f\u4e00\u4e2a\u6587\u4ef6\u4e00\u6837\uff1a<\/p>\n<ul type=\"disc\">\n<li>\u521b\u5efa\u5171\u4eab\u5185\u5b58\u6bb5\u3002\u5982\u679c\u5df2\u7ecf\u521b\u5efa\u4e86\uff0c\u4f1a\u629b\u5f02\u5e38\uff1a<\/li>\n<\/ul>\n<div>\n<div class=\"dp-highlighter bg_cpp\">\n<div class=\"bar\">\n<div class=\"tools\"><strong>[cpp]<\/strong>\u00a0<a class=\"ViewSource\" title=\"view plain\" href=\"http:\/\/blog.csdn.net\/great3779\/article\/details\/7226388\">view plain<\/a><span class=\"tracking-ad\" data-mod=\"popu_168\">\u00a0<a class=\"CopyToClipboard\" title=\"copy\" href=\"http:\/\/blog.csdn.net\/great3779\/article\/details\/7226388\" target=\"_blank\" rel=\"noopener\">copy<\/a><\/span><\/div>\n<\/div>\n<ol class=\"dp-cpp\" start=\"1\">\n<li class=\"alt\"><span class=\"keyword\">using\u00a0boost::interprocess;\u00a0\u00a0<\/span><\/li>\n<li>shared_memory_object\u00a0shm_obj<\/li>\n<li class=\"alt\">\u00a0\u00a0\u00a0(create_only\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0<span class=\"comment\">\/\/only\u00a0create\u00a0\u00a0<\/span><\/li>\n<li>\u00a0\u00a0\u00a0,<span class=\"string\">&#8220;shared_memory&#8221;\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0<span class=\"comment\">\/\/name\u00a0\u00a0<\/span><\/span><\/li>\n<li class=\"alt\">\u00a0\u00a0\u00a0,read_write\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0<span class=\"comment\">\/\/read-write\u00a0mode\u00a0\u00a0<\/span><\/li>\n<li>\u00a0\u00a0\u00a0);<\/li>\n<\/ol>\n<\/div>\n<\/div>\n<ul type=\"disc\">\n<li>\u6253\u5f00\u6216\u521b\u5efa\u4e00\u4e2a\u5171\u4eab\u5185\u5b58\u6bb5\uff1a<\/li>\n<\/ul>\n<div>\n<div class=\"dp-highlighter bg_cpp\">\n<div class=\"bar\">\n<div class=\"tools\"><strong>[cpp]<\/strong>\u00a0<a class=\"ViewSource\" title=\"view plain\" href=\"http:\/\/blog.csdn.net\/great3779\/article\/details\/7226388\">view plain<\/a><span class=\"tracking-ad\" data-mod=\"popu_168\">\u00a0<a class=\"CopyToClipboard\" title=\"copy\" href=\"http:\/\/blog.csdn.net\/great3779\/article\/details\/7226388\" target=\"_blank\" rel=\"noopener\">copy<\/a><\/span><\/div>\n<\/div>\n<ol class=\"dp-cpp\" start=\"1\">\n<li class=\"alt\"><span class=\"keyword\">using\u00a0boost::interprocess;\u00a0\u00a0<\/span><\/li>\n<li>shared_memory_object\u00a0shm_obj<\/li>\n<li class=\"alt\">\u00a0\u00a0\u00a0(open_or_create\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0<span class=\"comment\">\/\/open\u00a0or\u00a0create\u00a0\u00a0<\/span><\/li>\n<li>\u00a0\u00a0\u00a0,<span class=\"string\">&#8220;shared_memory&#8221;\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0<span class=\"comment\">\/\/name\u00a0\u00a0<\/span><\/span><\/li>\n<li class=\"alt\">\u00a0\u00a0\u00a0,read_only\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0<span class=\"comment\">\/\/read-only\u00a0mode\u00a0\u00a0<\/span><\/li>\n<li>\u00a0\u00a0\u00a0);<\/li>\n<\/ol>\n<\/div>\n<\/div>\n<ul type=\"disc\">\n<li>\u4ec5\u6253\u5f00\u4e00\u4e2a\u5171\u4eab\u5185\u5b58\u6bb5\u3002\u5982\u679c\u4e0d\u5b58\u5728\uff0c\u4f1a\u629b\u5f02\u5e38\uff1a<\/li>\n<\/ul>\n<div>\n<div class=\"dp-highlighter bg_cpp\">\n<div class=\"bar\">\n<div class=\"tools\"><strong>[cpp]<\/strong>\u00a0<a class=\"ViewSource\" title=\"view plain\" href=\"http:\/\/blog.csdn.net\/great3779\/article\/details\/7226388\">view plain<\/a><span class=\"tracking-ad\" data-mod=\"popu_168\">\u00a0<a class=\"CopyToClipboard\" title=\"copy\" href=\"http:\/\/blog.csdn.net\/great3779\/article\/details\/7226388\" target=\"_blank\" rel=\"noopener\">copy<\/a><\/span><\/div>\n<\/div>\n<ol class=\"dp-cpp\" start=\"1\">\n<li class=\"alt\"><span class=\"keyword\">using\u00a0boost::interprocess;\u00a0\u00a0<\/span><\/li>\n<li>shared_memory_object\u00a0shm_obj<\/li>\n<li class=\"alt\">\u00a0\u00a0\u00a0(open_only\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0<span class=\"comment\">\/\/only\u00a0open\u00a0\u00a0<\/span><\/li>\n<li>\u00a0\u00a0\u00a0,<span class=\"string\">&#8220;shared_memory&#8221;\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0<span class=\"comment\">\/\/name\u00a0\u00a0<\/span><\/span><\/li>\n<li class=\"alt\">\u00a0\u00a0\u00a0,read_write\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0<span class=\"comment\">\/\/read-write\u00a0mode\u00a0\u00a0<\/span><\/li>\n<li>\u00a0\u00a0\u00a0);<\/li>\n<\/ol>\n<\/div>\n<\/div>\n<p align=\"left\">\u5f53\u4e00\u4e2a\u5171\u4eab\u5185\u5b58\u5bf9\u8c61\u88ab\u521b\u5efa\u4e86\uff0c\u5b83\u7684\u5927\u5c0f\u662f0\u3002\u4e3a\u4e86\u8bbe\u7f6e\u5171\u4eab\u5185\u5b58\u7684\u5927\u5c0f\uff0c\u4f7f\u7528\u8005\u9700\u5728\u4e00\u4e2a\u5df2\u7ecf\u4ee5\u8bfb\u5199\u65b9\u5f0f\u6253\u5f00\u7684\u5171\u4eab\u5185\u5b58\u4e2d\u8c03\u7528truncate\u00a0\u51fd\u6570\uff1a<\/p>\n<div>\n<pre>shm_obj.truncate(10000);<\/pre>\n<\/div>\n<p align=\"left\">\u56e0\u4e3a\u5171\u4eab\u5185\u5b58\u5177\u6709\u5185\u6838\u6216\u6587\u4ef6\u7cfb\u7edf\u6301\u4e45\u5316\u6027\u8d28\uff0c\u56e0\u6b64\u7528\u6237\u5fc5\u987b\u663e\u5f0f\u9500\u6bc1\u5b83\u3002\u5982\u679c\u5171\u4eab\u5185\u5b58\u4e0d\u5b58\u5728\u3001\u6587\u4ef6\u88ab\u6253\u5f00\u6216\u6587\u4ef6\u4ecd\u65e7\u88ab\u5176\u4ed6\u8fdb\u7a0b\u5185\u5b58\u6620\u5c04\uff0c\u5219\u5220\u9664\u64cd\u4f5c\u53ef\u80fd\u4f1a\u5931\u8d25\u4e14\u8fd4\u56defalse\uff1a<\/p>\n<div>\n<div class=\"dp-highlighter bg_cpp\">\n<div class=\"bar\">\n<div class=\"tools\"><strong>[cpp]<\/strong>\u00a0<a class=\"ViewSource\" title=\"view plain\" href=\"http:\/\/blog.csdn.net\/great3779\/article\/details\/7226388\">view plain<\/a><span class=\"tracking-ad\" data-mod=\"popu_168\">\u00a0<a class=\"CopyToClipboard\" title=\"copy\" href=\"http:\/\/blog.csdn.net\/great3779\/article\/details\/7226388\" target=\"_blank\" rel=\"noopener\">copy<\/a><\/span><\/div>\n<\/div>\n<ol class=\"dp-cpp\" start=\"1\">\n<li class=\"alt\"><span class=\"keyword\">using\u00a0boost::interprocess;\u00a0\u00a0<\/span><\/li>\n<li>shared_memory_object::remove(<span class=\"string\">&#8220;shared_memory&#8221;);\u00a0\u00a0<\/span><\/li>\n<\/ol>\n<\/div>\n<\/div>\n<p align=\"left\">\u66f4\u591a\u5173\u4e8eshared_memory_object\u7684\u8be6\u60c5\uff0c\u8bf7\u53c2\u8003\u00a0<a title=\"Class shared_memory_object\" href=\"http:\/\/www.boost.org\/doc\/libs\/1_49_0_beta1\/doc\/html\/boost\/interprocess\/shared_memory_object.html\">boost::interprocess::shared_memory_object<\/a>\u3002<\/p>\n<p align=\"left\">\n<h3><a name=\"t6\"><\/a><a name=\"\u6620\u5c04\u5171\u4eab\u5185\u5b58\u7247\u6bb5\"><\/a><a name=\"_Toc315882198\"><\/a>\u6620\u5c04\u5171\u4eab\u5185\u5b58\u7247\u6bb5<\/h3>\n<p align=\"left\">\u4e00\u65e6\u88ab\u521b\u5efa\u6216\u6253\u5f00\uff0c\u4e00\u4e2a\u8fdb\u7a0b\u5fc5\u987b\u6620\u5c04\u5171\u4eab\u5185\u5b58\u5bf9\u8c61\u81f3\u8fdb\u7a0b\u7684\u5730\u5740\u7a7a\u95f4\u3002\u4f7f\u7528\u8005\u53ef\u4ee5\u6620\u5c04\u6574\u4e2a\u6216\u90e8\u5206\u5171\u4eab\u5185\u5b58\u3002\u4f7f\u7528\u7c7bmapped_region\u5b8c\u6210\u6620\u5c04\u8fc7\u7a0b\u3002\u8fd9\u4e2a\u7c7b\u4ee3\u8868\u4e86\u4e00\u4e2a\u5185\u5b58\u533a\u57df\uff0c\u8fd9\u4e2a\u5185\u5b58\u533a\u57df\u5df2\u7ecf\u88ab\u4ece\u5171\u4eab\u5185\u5b58\u6216\u5176\u4ed6\u6620\u5c04\u517c\u5bb9\u7684\u8bbe\u5907\uff08\u4f8b\u5982\uff0c\u6587\u4ef6\uff09\u6620\u5c04\u3002\u4e00\u4e2amapped_region\u80fd\u4ece\u4efb\u4f55memory_mappable\u5bf9\u8c61\u521b\u5efa\uff0c\u6240\u4ee5\u5982\u4f60\u60f3\u8c61\uff0cshared_memory_object\u5c31\u662f\u4e00\u4e2amemory_mappable\u5bf9\u8c61\uff1a<\/p>\n<div>\n<div class=\"dp-highlighter bg_cpp\">\n<div class=\"bar\">\n<div class=\"tools\"><strong>[cpp]<\/strong>\u00a0<a class=\"ViewSource\" title=\"view plain\" href=\"http:\/\/blog.csdn.net\/great3779\/article\/details\/7226388\">view plain<\/a><span class=\"tracking-ad\" data-mod=\"popu_168\">\u00a0<a class=\"CopyToClipboard\" title=\"copy\" href=\"http:\/\/blog.csdn.net\/great3779\/article\/details\/7226388\" target=\"_blank\" rel=\"noopener\">copy<\/a><\/span><\/div>\n<\/div>\n<ol class=\"dp-cpp\" start=\"1\">\n<li class=\"alt\"><span class=\"keyword\">using\u00a0boost::interprocess;\u00a0\u00a0<\/span><\/li>\n<li>std::<span class=\"datatypes\">size_t\u00a0ShmSize\u00a0=\u00a0&#8230;\u00a0\u00a0<\/span><\/li>\n<li class=\"alt\"><\/li>\n<li><span class=\"comment\">\/\/Map\u00a0the\u00a0second\u00a0half\u00a0of\u00a0the\u00a0memory\u00a0\u00a0<\/span><\/li>\n<li class=\"alt\">mapped_region\u00a0region<\/li>\n<li>\u00a0\u00a0\u00a0(\u00a0shm\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0<span class=\"comment\">\/\/Memory-mappable\u00a0object\u00a0\u00a0<\/span><\/li>\n<li class=\"alt\">\u00a0\u00a0\u00a0,\u00a0read_write\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0<span class=\"comment\">\/\/Access\u00a0mode\u00a0\u00a0<\/span><\/li>\n<li>\u00a0\u00a0\u00a0,\u00a0ShmSize\/2\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0<span class=\"comment\">\/\/Offset\u00a0from\u00a0the\u00a0beginning\u00a0of\u00a0shm\u00a0\u00a0<\/span><\/li>\n<li class=\"alt\">\u00a0\u00a0\u00a0,\u00a0ShmSize-ShmSize\/2\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0<span class=\"comment\">\/\/Length\u00a0of\u00a0the\u00a0region\u00a0\u00a0<\/span><\/li>\n<li>\u00a0\u00a0\u00a0);<\/li>\n<li class=\"alt\"><\/li>\n<li><span class=\"comment\">\/\/Get\u00a0the\u00a0address\u00a0of\u00a0the\u00a0region\u00a0\u00a0<\/span><\/li>\n<li class=\"alt\">region.get_address();<\/li>\n<li><\/li>\n<li class=\"alt\"><span class=\"comment\">\/\/Get\u00a0the\u00a0size\u00a0of\u00a0the\u00a0region\u00a0\u00a0<\/span><\/li>\n<li>region.get_size();<\/li>\n<\/ol>\n<\/div>\n<\/div>\n<p align=\"left\">\u4f7f\u7528\u8005\u53ef\u4ee5\u4ece\u53ef\u6620\u5c04\u7684\u5bf9\u8c61\u4e2d\u6307\u5b9a\u6620\u5c04\u533a\u57df\u7684\u8d77\u59cb\u504f\u79fb\u91cf\u4ee5\u53ca\u6620\u5c04\u533a\u57df\u7684\u5927\u5c0f\u3002\u5982\u679c\u672a\u6307\u5b9a\u504f\u79fb\u91cf\u6216\u5927\u5c0f\uff0c\u5219\u6574\u4e2a\u6620\u5c04\u5bf9\u8c61\uff08\u5728\u6b64\u60c5\u51b5\u4e0b\u662f\u5171\u4eab\u5185\u5b58\uff09\u88ab\u6620\u5c04\u3002\u5982\u679c\u4ec5\u6307\u5b9a\u4e86\u504f\u79fb\u91cf\u800c\u6ca1\u6709\u6307\u5b9a\u5927\u5c0f\uff0c\u5219\u6620\u5c04\u533a\u57df\u8986\u76d6\u4e86\u4ece\u504f\u79fb\u91cf\u5230\u53ef\u6620\u5c04\u5bf9\u8c61\u7ed3\u5c3e\u7684\u6574\u4e2a\u533a\u57df\u3002<\/p>\n<p align=\"left\">\u66f4\u591a\u5173\u4e8emapped_region\u7684\u8be6\u60c5\uff0c\u8bf7\u53c2\u8003\u00a0<a title=\"Class mapped_region\" href=\"http:\/\/www.boost.org\/doc\/libs\/1_49_0_beta1\/doc\/html\/boost\/interprocess\/mapped_region.html\">boost::interprocess::mapped_region<\/a>\u3002<\/p>\n<p align=\"left\">\n<h3><a name=\"t7\"><\/a><a name=\"\u4e00\u4e2a\u7b80\u5355\u7684\u4f8b\u5b50\"><\/a><a name=\"_Toc315882199\"><\/a>\u4e00\u4e2a\u7b80\u5355\u7684\u4f8b\u5b50<\/h3>\n<p align=\"left\">\u8ba9\u6211\u4eec\u770b\u770b\u4e00\u4e2a\u7b80\u5355\u7684\u4f7f\u7528\u5171\u4eab\u5185\u5b58\u7684\u4f8b\u5b50\u3002\u4e00\u4e2a\u670d\u52a1\u7aef\u8fdb\u7a0b\u521b\u5efa\u4e86\u4e00\u4e2a\u5171\u4eab\u5185\u5b58\u5bf9\u8c61\uff0c\u6620\u5c04\u5b83\u5e76\u4e14\u521d\u59cb\u5316\u6240\u6709\u5b57\u8282\u81f3\u540c\u4e00\u4e2a\u503c\u3002\u4e4b\u540e\uff0c\u5ba2\u6237\u7aef\u8fdb\u7a0b\u6253\u5f00\u5171\u4eab\u5185\u5b58\uff0c\u6620\u5c04\u5b83\u5e76\u4e14\u68c0\u67e5\u6570\u636e\u662f\u4e0d\u662f\u88ab\u6b63\u786e\u7684\u521d\u59cb\u5316\u4e86\u3002<\/p>\n<div>\n<div class=\"dp-highlighter bg_cpp\">\n<div class=\"bar\">\n<div class=\"tools\"><strong>[cpp]<\/strong>\u00a0<a class=\"ViewSource\" title=\"view plain\" href=\"http:\/\/blog.csdn.net\/great3779\/article\/details\/7226388\">view plain<\/a><span class=\"tracking-ad\" data-mod=\"popu_168\">\u00a0<a class=\"CopyToClipboard\" title=\"copy\" href=\"http:\/\/blog.csdn.net\/great3779\/article\/details\/7226388\" target=\"_blank\" rel=\"noopener\">copy<\/a><\/span><\/div>\n<\/div>\n<ol class=\"dp-cpp\" start=\"1\">\n<li class=\"alt\"><span class=\"preprocessor\">#include\u00a0&lt;boost\/interprocess\/shared_memory_object.hpp&gt;\u00a0\u00a0<\/span><\/li>\n<li><span class=\"preprocessor\">#include\u00a0&lt;boost\/interprocess\/mapped_region.hpp&gt;\u00a0\u00a0<\/span><\/li>\n<li class=\"alt\"><span class=\"preprocessor\">#include\u00a0&lt;cstring&gt;\u00a0\u00a0<\/span><\/li>\n<li><span class=\"preprocessor\">#include\u00a0&lt;cstdlib&gt;\u00a0\u00a0<\/span><\/li>\n<li class=\"alt\"><span class=\"preprocessor\">#include\u00a0&lt;string&gt;\u00a0\u00a0<\/span><\/li>\n<li><\/li>\n<li class=\"alt\"><span class=\"datatypes\">int\u00a0main(int\u00a0argc,\u00a0char\u00a0*argv[])\u00a0\u00a0<\/span><\/li>\n<li>{<\/li>\n<li class=\"alt\">\u00a0\u00a0\u00a0<span class=\"keyword\">using\u00a0namespace\u00a0boost::interprocess;\u00a0\u00a0<\/span><\/li>\n<li><\/li>\n<li class=\"alt\">\u00a0\u00a0\u00a0<span class=\"keyword\">if(argc\u00a0==\u00a01){\u00a0\u00a0<span class=\"comment\">\/\/Parent\u00a0process\u00a0\u00a0<\/span><\/span><\/li>\n<li>\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0<span class=\"comment\">\/\/Remove\u00a0shared\u00a0memory\u00a0on\u00a0construction\u00a0and\u00a0destruction\u00a0\u00a0<\/span><\/li>\n<li class=\"alt\">\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0<span class=\"keyword\">struct\u00a0shm_remove\u00a0\u00a0<\/span><\/li>\n<li>\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0{<\/li>\n<li class=\"alt\">\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0shm_remove()\u00a0{\u00a0shared_memory_object::remove(<span class=\"string\">&#8220;MySharedMemory&#8221;);\u00a0}\u00a0\u00a0<\/span><\/li>\n<li>\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0~shm_remove(){\u00a0shared_memory_object::remove(<span class=\"string\">&#8220;MySharedMemory&#8221;);\u00a0}\u00a0\u00a0<\/span><\/li>\n<li class=\"alt\">\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0}\u00a0remover;<\/li>\n<li><\/li>\n<li class=\"alt\">\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0<span class=\"comment\">\/\/Create\u00a0a\u00a0shared\u00a0memory\u00a0object.\u00a0\u00a0<\/span><\/li>\n<li>\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0shared_memory_object\u00a0shm\u00a0(create_only,\u00a0<span class=\"string\">&#8220;MySharedMemory&#8221;,\u00a0read_write);\u00a0\u00a0<\/span><\/li>\n<li class=\"alt\"><\/li>\n<li>\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0<span class=\"comment\">\/\/Set\u00a0size\u00a0\u00a0<\/span><\/li>\n<li class=\"alt\">\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0shm.truncate(1000);<\/li>\n<li><\/li>\n<li class=\"alt\">\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0<span class=\"comment\">\/\/Map\u00a0the\u00a0whole\u00a0shared\u00a0memory\u00a0in\u00a0this\u00a0process\u00a0\u00a0<\/span><\/li>\n<li>\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0mapped_region\u00a0region(shm,\u00a0read_write);<\/li>\n<li class=\"alt\"><\/li>\n<li>\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0<span class=\"comment\">\/\/Write\u00a0all\u00a0the\u00a0memory\u00a0to\u00a01\u00a0\u00a0<\/span><\/li>\n<li class=\"alt\">\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0std::memset(region.get_address(),\u00a01,\u00a0region.get_size());<\/li>\n<li><\/li>\n<li class=\"alt\">\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0<span class=\"comment\">\/\/Launch\u00a0child\u00a0process\u00a0\u00a0<\/span><\/li>\n<li>\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0std::string\u00a0s(argv[0]);\u00a0s\u00a0+=\u00a0<span class=\"string\">&#8221;\u00a0child\u00a0&#8220;;\u00a0\u00a0<\/span><\/li>\n<li class=\"alt\">\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0<span class=\"keyword\">if(0\u00a0!=\u00a0std::system(s.c_str()))\u00a0\u00a0<\/span><\/li>\n<li>\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0<span class=\"keyword\">return\u00a01;\u00a0\u00a0<\/span><\/li>\n<li class=\"alt\">\u00a0\u00a0\u00a0}<\/li>\n<li>\u00a0\u00a0\u00a0<span class=\"keyword\">else{\u00a0\u00a0<\/span><\/li>\n<li class=\"alt\">\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0<span class=\"comment\">\/\/Open\u00a0already\u00a0created\u00a0shared\u00a0memory\u00a0object.\u00a0\u00a0<\/span><\/li>\n<li>\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0shared_memory_object\u00a0shm\u00a0(open_only,\u00a0<span class=\"string\">&#8220;MySharedMemory&#8221;,\u00a0read_only);\u00a0\u00a0<\/span><\/li>\n<li class=\"alt\"><\/li>\n<li>\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0<span class=\"comment\">\/\/Map\u00a0the\u00a0whole\u00a0shared\u00a0memory\u00a0in\u00a0this\u00a0process\u00a0\u00a0<\/span><\/li>\n<li class=\"alt\">\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0mapped_region\u00a0region(shm,\u00a0read_only);<\/li>\n<li><\/li>\n<li class=\"alt\">\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0<span class=\"comment\">\/\/Check\u00a0that\u00a0memory\u00a0was\u00a0initialized\u00a0to\u00a01\u00a0\u00a0<\/span><\/li>\n<li>\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0<span class=\"datatypes\">char\u00a0*mem\u00a0=\u00a0<span class=\"keyword\">static_cast&lt;char*&gt;(region.get_address());\u00a0\u00a0<\/span><\/span><\/li>\n<li class=\"alt\">\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0<span class=\"keyword\">for(std::<span class=\"datatypes\">size_t\u00a0i\u00a0=\u00a00;\u00a0i\u00a0&lt;\u00a0region.get_size();\u00a0++i)\u00a0\u00a0<\/span><\/span><\/li>\n<li>\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0<span class=\"keyword\">if(*mem++\u00a0!=\u00a01)\u00a0\u00a0<\/span><\/li>\n<li class=\"alt\">\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0<span class=\"keyword\">return\u00a01;\u00a0\u00a0\u00a0<span class=\"comment\">\/\/Error\u00a0checking\u00a0memory\u00a0\u00a0<\/span><\/span><\/li>\n<li>\u00a0\u00a0\u00a0}<\/li>\n<li class=\"alt\">\u00a0\u00a0\u00a0<span class=\"keyword\">return\u00a00;\u00a0\u00a0<\/span><\/li>\n<li>}<\/li>\n<\/ol>\n<\/div>\n<\/div>\n<p>&nbsp;<\/p>\n<h3><a name=\"t8\"><\/a><a name=\"\u5bf9\u6ca1\u6709\u5171\u4eab\u5185\u5b58\u5bf9\u8c61\u7684\u7cfb\u7edf\u8fdb\u884c\u6a21\u62df\"><\/a><a name=\"_Toc315882200\"><\/a>\u5bf9\u6ca1\u6709\u5171\u4eab\u5185\u5b58\u5bf9\u8c61\u7684\u7cfb\u7edf\u8fdb\u884c\u6a21\u62df<\/h3>\n<p align=\"left\">Boost.Interprocess\u5728POSIX\u8bed\u4e49\u73af\u5883\u4e0b\u63d0\u4f9b\u4e86\u53ef\u79fb\u690d\u7684\u5171\u4eab\u5185\u5b58\u3002\u4e00\u4e9b\u64cd\u4f5c\u7cfb\u7edf\u4e0d\u652f\u6301POSIX\u5f62\u5f0f\u5b9a\u4e49\u7684\u5171\u4eab\u5185\u5b58\uff1a<\/p>\n<ul type=\"disc\">\n<li>Windows\u64cd\u4f5c\u7cfb\u7edf\u63d0\u4f9b\u4e86\u4f7f\u7528\u5206\u9875\u6587\u4ef6\u652f\u6301\u5185\u5b58\u7684\u5171\u4eab\u5185\u5b58\uff0c\u4f46\u662f\u751f\u547d\u5468\u671f\u7684\u610f\u4e49\u4e0ePOSIX\u5b9a\u4e49\u5f97\u4e0d\u540c\uff08\u66f4\u591a\u8be6\u60c5\uff0c\u53c2\u8003\u539f\u751fWindows\u5171\u4eab\u5185\u5b58\u7ae0\u8282\uff09\u3002<\/li>\n<li>\u4e00\u4e9bUNIX\u7cfb\u7edf\u4e0d\u80fd\u5b8c\u5168\u652f\u6301POSIX\u5171\u4eab\u5185\u5b58\u5bf9\u8c61\u3002<\/li>\n<\/ul>\n<p align=\"left\">\u5728\u8fd9\u4e9b\u5e73\u53f0\u4e0a\uff0c\u5171\u4eab\u5185\u5b58\u91c7\u7528\u6620\u5c04\u6587\u4ef6\u6765\u6a21\u62df\u3002\u8fd9\u4e9b\u6620\u5c04\u6587\u4ef6\u521b\u5efa\u5728\u4e34\u65f6\u6587\u4ef6\u5939\u4e0b\u7684&#8221;boost_interprocess&#8221;\u6587\u4ef6\u5939\u4e2d\u3002\u5728Windows\u5e73\u53f0\u4e0b\uff0c\u5982\u679c&#8221;Common AppData&#8221;\u00a0\u5173\u952e\u5b57\u51fa\u73b0\u5728\u6ce8\u518c\u8868\u4e2d\uff0c&#8221;boost_interprocess&#8221;\u00a0\u6587\u4ef6\u5939\u5c31\u521b\u5efa\u5728\u90a3\u4e2a\u6587\u4ef6\u5939\u4e0b\uff08XP\u7cfb\u7edf\u901a\u5e38\u662f&#8221;C:\\Documentsand Settings\\All Users\\Application Data&#8221;\u00a0\uff0cVista\u5219\u662f&#8221;C:\\ProgramData&#8221;\uff09\u3002\u5bf9\u6ca1\u6709\u6ce8\u518c\u8868\u9879\u7684Windows\u5e73\u53f0\u6216\u662fUnix\u7cfb\u7edf\uff0c\u5171\u4eab\u5185\u5b58\u88ab\u521b\u5efa\u5728\u7cfb\u7edf\u4e34\u65f6\u6587\u4ef6\u5939\u4e0b\uff08&#8221;\/tmp&#8221;\u6216\u7c7b\u4f3c\uff09\u3002<\/p>\n<p align=\"left\">\u7531\u4e8e\u91c7\u7528\u4e86\u8fd9\u79cd\u6a21\u62df\u65b9\u5f0f\uff0c\u5171\u4eab\u5185\u5b58\u5728\u90e8\u5206\u8fd9\u4e9b\u64cd\u4f5c\u7cfb\u7edf\u4e2d\u5177\u6709\u6587\u4ef6\u7cfb\u7edf\u751f\u547d\u5468\u671f\u3002<\/p>\n<p align=\"left\">\n<h3><a name=\"t9\"><\/a><a name=\"\u5220\u9664\u5171\u4eab\u5185\u5b58\"><\/a><a name=\"_Toc315882201\"><\/a>\u5220\u9664\u5171\u4eab\u5185\u5b58<\/h3>\n<p align=\"left\"><a title=\"Class shared_memory_object\" href=\"http:\/\/www.boost.org\/doc\/libs\/1_49_0_beta1\/doc\/html\/boost\/interprocess\/shared_memory_object.html\">shared_memory_object<\/a>\u63d0\u4f9b\u4e86\u4e00\u4e2a\u9759\u6001\u5220\u9664\u51fd\u6570\u7528\u4e8e\u5220\u9664\u4e00\u4e2a\u5171\u4eab\u5185\u5b58\u5bf9\u8c61\u3002<\/p>\n<p align=\"left\">\u5982\u679c\u5171\u4eab\u5185\u5b58\u5bf9\u8c61\u4e0d\u5b58\u5728\u6216\u662f\u88ab\u53e6\u4e00\u4e2a\u8fdb\u7a0b\u6253\u5f00\uff0c\u5219\u51fd\u6570\u8c03\u7528\u4f1a\u5931\u8d25\u3002\u9700\u8981\u6ce8\u610f\u7684\u662f\u8fd9\u4e2a\u51fd\u6570\u4e0e\u6807\u51c6\u7684C\u51fd\u6570int\u00a0remove(constchar\u00a0*path)\u7c7b\u4f3c\u3002\u5728UNIX\u7cfb\u7edf\u4e2d\uff0cshared_memory_object::remove\u8c03\u7528shm_unlink\uff1a<\/p>\n<p align=\"left\">\u8be5\u51fd\u6570\u5c06\u5220\u9664\u540d\u79f0\u6240\u6307\u51fa\u7684\u5b57\u7b26\u4e32\u547d\u540d\u7684\u5171\u4eab\u5185\u5b58\u5bf9\u8c61\u540d\u79f0\u3002<\/p>\n<ul type=\"disc\">\n<li>\u5f53\u65ad\u5f00\u8fde\u63a5\u65f6\uff0c\u5b58\u5728\u4e00\u4e2a\u6216\u591a\u4e2a\u5bf9\u6b64\u5171\u4eab\u5185\u5b58\u5bf9\u8c61\u7684\u5f15\u7528\uff0c\u5219\u5728\u51fd\u6570\u8fd4\u56de\u524d\uff0c\u540d\u79f0\u4f1a\u9c9c\u5351\u5220\u9664\uff0c\u4f46\u662f\u5185\u5b58\u5bf9\u8c61\u5185\u5bb9\u7684\u5220\u9664\u4f1a\u5ef6\u8fdf\u81f3\u6240\u6709\u5bf9\u5171\u4eab\u5185\u5b58\u5bf9\u8c61\u7684\u6253\u5f00\u6216\u6620\u5c04\u7684\u5f15\u7528\u88ab\u5220\u9664\u540e\u8fdb\u884c\u3002<\/li>\n<li>\u5373\u4f7f\u5bf9\u8c61\u5728\u6700\u540e\u4e00\u4e2a\u51fd\u6570\u8c03\u7528\u540e\u7ee7\u7eed\u5b58\u5728\uff0c\u590d\u7528\u6b64\u540d\u5b57\u5c06\u5bfc\u81f4\u521b\u5efa\u4e00\u4e2a\u00a0<a title=\"Class shared_memory_object\" href=\"http:\/\/www.boost.org\/doc\/libs\/1_49_0_beta1\/doc\/html\/boost\/interprocess\/shared_memory_object.html\">boost::interprocess::shared_memory_object<\/a>\u5b9e\u4f8b\uff0c\u5c31\u597d\u50cf\u91c7\u7528\u6b64\u540d\u79f0\u7684\u5171\u4eab\u5185\u5b58\u5bf9\u8c61\u4e0d\u5b58\u5728\u4e00\u6837\uff08\u4e5f\u5373\uff0c\u5c1d\u8bd5\u6253\u5f00\u4ee5\u6b64\u540d\u5b57\u547d\u540d\u7684\u5bf9\u8c61\u4f1a\u5931\u8d25\uff0c\u5e76\u4e14\u4e00\u4e2a\u91c7\u7528\u6b64\u540d\u5b57\u7684\u65b0\u5bf9\u8c61\u4f1a\u88ab\u521b\u5efa\uff09\u3002<\/li>\n<\/ul>\n<p align=\"left\">\u5728Windows\u64cd\u4f5c\u7cfb\u7edf\u4e2d\uff0c\u5f53\u524d\u7248\u672c\u652f\u6301\u5bf9UNIX\u65ad\u5f00\u884c\u4e3a\u901a\u5e38\u53ef\u63a5\u53d7\u7684\u4eff\u771f\uff1a\u6587\u4ef6\u4f1a\u7528\u4e00\u4e2a\u968f\u673a\u540d\u5b57\u91cd\u547d\u540d\uff0c\u5e76\u88ab\u6807\u8bb0\u4ee5\u4fbf\u6700\u540e\u4e00\u4e2a\u6253\u5f00\u7684\u53e5\u67c4\u5173\u95ed\u65f6\u5220\u9664\u5b83\u3002<\/p>\n<p align=\"left\">\n<h3><a name=\"t10\"><\/a><a name=\"UNIX\u7cfb\u7edf\u7684\u533f\u540d\u5171\u4eab\u5185\u5b58\"><\/a><a name=\"_Toc315882202\"><\/a>UNIX\u7cfb\u7edf\u7684\u533f\u540d\u5171\u4eab\u5185\u5b58<\/h3>\n<p align=\"left\">\u5f53\u6d89\u53ca\u591a\u4e2a\u8fdb\u7a0b\u65f6\uff0c\u521b\u5efa\u4e00\u4e2a\u5171\u4eab\u5185\u5b58\u7247\u6bb5\u5e76\u6620\u5c04\u5b83\u662f\u6709\u70b9\u4e4f\u5473\u7684\u3002\u5f53\u5728UNIX\u7cfb\u7edf\u4e0b\u8fdb\u7a0b\u95f4\u901a\u8fc7\u8c03\u7528\u64cd\u4f5c\u7cfb\u7edf\u7684fork()\u8054\u7cfb\u65f6\uff0c\u4e00\u4e2a\u66f4\u7b80\u5355\u7684\u65b9\u6cd5\u662f\u4f7f\u7528\u533f\u540d\u5171\u4eab\u5185\u5b58\u3002<\/p>\n<p align=\"left\">\u6b64\u7279\u5f81\u5df2\u4f7f\u7528\u5728UNIX\u7cfb\u7edf\u4e2d\uff0c\u7528\u4e8e\u6620\u5c04\u8bbe\u5907\\ dev\\zero\u6216\u53ea\u5728POSIX \u00a0mmap\u7cfb\u7edf\u8c03\u7528\u4e2d\u4f7f\u7528MAP_ANONYMOUS\u3002<\/p>\n<p align=\"left\">\u6b64\u7279\u5f81\u5728<strong>Boost.Interprocess\u4f7f\u7528\u51fd\u6570<\/strong>anonymous_shared_memory()\u00a0\u8fdb\u884c\u4e86\u91cd\u5305\u88c5\uff0c\u6b64\u51fd\u6570\u8fd4\u56de\u4e00\u4e2amapped_region\u00a0\u5bf9\u8c61\uff0c\u6b64\u5bf9\u8c61\u627f\u8f7d\u4e86\u4e00\u4e2a\u80fd\u591f\u88ab\u76f8\u5173\u8fdb\u7a0b\u5171\u4eab\u7684\u533f\u540d\u5171\u4eab\u5185\u5b58\u7247\u6bb5\u3002<\/p>\n<p align=\"left\">\u4ee5\u4e0b\u662f\u4f8b\u5b50\uff1a<\/p>\n<div>\n<div class=\"dp-highlighter bg_cpp\">\n<div class=\"bar\">\n<div class=\"tools\"><strong>[cpp]<\/strong>\u00a0<a class=\"ViewSource\" title=\"view plain\" href=\"http:\/\/blog.csdn.net\/great3779\/article\/details\/7226388\">view plain<\/a><span class=\"tracking-ad\" data-mod=\"popu_168\">\u00a0<a class=\"CopyToClipboard\" title=\"copy\" href=\"http:\/\/blog.csdn.net\/great3779\/article\/details\/7226388\" target=\"_blank\" rel=\"noopener\">copy<\/a><\/span><\/div>\n<\/div>\n<ol class=\"dp-cpp\" start=\"1\">\n<li class=\"alt\"><span class=\"preprocessor\">#include\u00a0&lt;boost\/interprocess\/anonymous_shared_memory.hpp&gt;\u00a0\u00a0<\/span><\/li>\n<li><span class=\"preprocessor\">#include\u00a0&lt;boost\/interprocess\/mapped_region.hpp&gt;\u00a0\u00a0<\/span><\/li>\n<li class=\"alt\"><span class=\"preprocessor\">#include\u00a0&lt;iostream&gt;\u00a0\u00a0<\/span><\/li>\n<li><span class=\"preprocessor\">#include\u00a0&lt;cstring&gt;\u00a0\u00a0<\/span><\/li>\n<li class=\"alt\"><\/li>\n<li><span class=\"datatypes\">int\u00a0main\u00a0()\u00a0\u00a0<\/span><\/li>\n<li class=\"alt\">{<\/li>\n<li>\u00a0\u00a0\u00a0<span class=\"keyword\">using\u00a0namespace\u00a0boost::interprocess;\u00a0\u00a0<\/span><\/li>\n<li class=\"alt\">\u00a0\u00a0\u00a0<span class=\"keyword\">try{\u00a0\u00a0<\/span><\/li>\n<li>\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0<span class=\"comment\">\/\/Create\u00a0an\u00a0anonymous\u00a0shared\u00a0memory\u00a0segment\u00a0with\u00a0size\u00a01000\u00a0\u00a0<\/span><\/li>\n<li class=\"alt\">\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0mapped_region\u00a0region(anonymous_shared_memory(1000));<\/li>\n<li><\/li>\n<li class=\"alt\">\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0<span class=\"comment\">\/\/Write\u00a0all\u00a0the\u00a0memory\u00a0to\u00a01\u00a0\u00a0<\/span><\/li>\n<li>\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0std::memset(region.get_address(),\u00a01,\u00a0region.get_size());<\/li>\n<li class=\"alt\"><\/li>\n<li>\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0<span class=\"comment\">\/\/The\u00a0segment\u00a0is\u00a0unmapped\u00a0when\u00a0&#8220;region&#8221;\u00a0goes\u00a0out\u00a0of\u00a0scope\u00a0\u00a0<\/span><\/li>\n<li class=\"alt\">\u00a0\u00a0\u00a0}<\/li>\n<li>\u00a0\u00a0\u00a0<span class=\"keyword\">catch(interprocess_exception\u00a0&amp;ex){\u00a0\u00a0<\/span><\/li>\n<li class=\"alt\">\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0std::cout\u00a0&lt;&lt;\u00a0ex.what()\u00a0&lt;&lt;\u00a0std::endl;<\/li>\n<li>\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0<span class=\"keyword\">return\u00a01;\u00a0\u00a0<\/span><\/li>\n<li class=\"alt\">\u00a0\u00a0\u00a0}<\/li>\n<li>\u00a0\u00a0\u00a0<span class=\"keyword\">return\u00a00;\u00a0\u00a0<\/span><\/li>\n<li class=\"alt\">}<\/li>\n<\/ol>\n<\/div>\n<\/div>\n<p align=\"left\">\u4e00\u65e6\u7247\u6bb5\u5efa\u7acb\uff0c\u53ef\u4ee5\u4f7f\u7528fork()\u8c03\u7528\u4ee5\u4fbf\u5185\u5b58\u533a\u57df\u80fd\u591f\u88ab\u7528\u4e8e\u901a\u4fe1\u4e24\u4e2a\u76f8\u5173\u8fdb\u7a0b\u3002<\/p>\n<p align=\"left\">\n<h3><a name=\"t11\"><\/a><a name=\"Windows\u539f\u751f\u5171\u4eab\u5185\u5b58\"><\/a><a name=\"_Toc315882203\"><\/a>Windows\u539f\u751f\u5171\u4eab\u5185\u5b58<\/h3>\n<p align=\"left\">Windows\u64cd\u4f5c\u7cfb\u7edf\u4e5f\u63d0\u4f9b\u4e86\u5171\u4eab\u5185\u5b58\uff0c\u4f46\u8fd9\u79cd\u5171\u4eab\u5185\u5b58\u7684\u751f\u547d\u5468\u671f\u4e0e\u5185\u6838\u6216\u6587\u4ef6\u7cfb\u7edf\u7684\u751f\u547d\u5468\u671f\u975e\u5e38\u4e0d\u540c\u3002\u8fd9\u79cd\u5171\u4eab\u5185\u5b58\u5728\u9875\u9762\u6587\u4ef6\u7684\u652f\u6301\u4e0b\u521b\u5efa\uff0c\u5e76\u4e14\u5f53\u5173\u8054\u6b64\u5171\u4eab\u5185\u5b58\u7684\u6700\u540e\u4e00\u4e2a\u8fdb\u7a0b\u9500\u6bc1\u540e\u5b83\u81ea\u52a8\u9500\u6bc1\u3002<\/p>\n<p align=\"left\">\u57fa\u4e8e\u6b64\u539f\u56e0\uff0c\u82e5\u4f7f\u7528\u672c\u5730windows\u5171\u4eab\u5185\u5b58\uff0c\u5219\u6ca1\u6709\u6709\u6548\u7684\u65b9\u6cd5\u53bb\u6a21\u62df\u5185\u6838\u6216\u6587\u4ef6\u7cfb\u7edf\u6301\u4e45\u6027\u3002<strong>Boost.Interprocess<\/strong>\u4f7f\u7528\u5185\u5b58\u6620\u5c04\u6587\u4ef6\u6a21\u62df\u5171\u4eab\u5185\u5b58\u3002\u8fd9\u4fdd\u8bc1\u4e86\u5728POSIX\u4e0eWindows\u64cd\u4f5c\u7cfb\u7edf\u95f4\u7684\u517c\u5bb9\u6027\u3002<\/p>\n<p align=\"left\">\u7136\u800c\uff0c\u8bbf\u95ee\u539f\u751fwindows\u5171\u4eab\u5185\u5b58\u662f<strong>Boost.Interprocess<\/strong>\u4f7f\u7528\u8005\u7684\u4e00\u4e2a\u57fa\u672c\u8981\u6c42\uff0c\u56e0\u4e3a\u4ed6\u4eec\u60f3\u8bbf\u95ee\u7531\u5176\u4ed6\u8fdb\u7a0b\u4e0d\u4f7f\u7528<strong>Boost.Interprocess<\/strong>\u521b\u5efa\u7684\u5171\u4eab\u5185\u5b58\u3002\u4e3a\u4e86\u7ba1\u7406\u539f\u751fwindows\u5171\u4eab\u5185\u5b58\uff0c<strong>Boost.Interprocess<\/strong>\u63d0\u4f9b\u4e86\u7c7b<a title=\"Class windows_shared_memory\" href=\"http:\/\/www.boost.org\/doc\/libs\/1_49_0_beta1\/doc\/html\/boost\/interprocess\/windows_shared_memory.html\">windows_shared_memory<\/a>\u3002<\/p>\n<p align=\"left\">Windows\u5171\u4eab\u5185\u5b58\u7684\u521b\u5efa\u4e0e\u53ef\u79fb\u690d\u7684\u5171\u4eab\u5185\u5b58\u521b\u5efa\u6709\u70b9\u4e0d\u540c\uff1a\u5f53\u521b\u5efa\u5bf9\u8c61\u65f6\uff0c\u5185\u5b58\u7247\u6bb5\u7684\u5927\u5c0f\u5fc5\u987b\u6307\u5b9a\uff0c\u5e76\u4e14\u4e0d\u540c\u50cf\u5171\u4eab\u5185\u5b58\u5bf9\u8c61\u90a3\u6837\u4f7f\u7528truncate\u00a0\u65b9\u6cd5\u3002<\/p>\n<p align=\"left\">\u9700\u8981\u6ce8\u610f\u7684\u662f\uff0c\u5f53\u5173\u8054\u5171\u4eab\u5185\u5b58\u7684\u6700\u540e\u4e00\u4e2a\u5bf9\u8c61\u9500\u6bc1\u540e\uff0c<strong>\u5171\u4eab\u5185\u5b58\u4f1a\u88ab\u9500\u6bc1\uff0c<\/strong>\u56e0\u6b64\u539f\u751fwindows\u5171\u4eab\u5185\u5b58<strong>\u6ca1\u6709\u6301\u4e45\u6027<\/strong>\u3002\u539f\u751fwindows\u5171\u4eab\u5185\u5b58\u8fd8\u6709\u4e00\u4e9b\u5176\u4ed6\u9650\u5236\uff1a\u4e00\u4e2a\u8fdb\u7a0b\u80fd\u591f\u6253\u5f00\u6216\u6620\u5c04\u7531\u5176\u4ed6\u8fdb\u7a0b\u521b\u5efa\u7684\u5168\u90e8\u5171\u4eab\u5185\u5b58\uff0c\u4f46\u662f\u5b83\u4e0d\u77e5\u9053\u5185\u5b58\u7684\u5927\u5c0f\u3002\u8fd9\u79cd\u9650\u5236\u662f\u7531Windows API\u5f15\u5165\u7684\uff0c\u56e0\u6b64\u4f7f\u7528\u8005\u5728\u6253\u5f00\u5185\u5b58\u7247\u6bb5\u65f6\uff0c\u5fc5\u987b\u4ee5\u67d0\u79cd\u65b9\u5f0f\u4f20\u8f93\u5185\u5b58\u7247\u6bb5\u7684\u5927\u5c0f\u7ed9\u8fdb\u7a0b\u3002<\/p>\n<p align=\"left\">\u5728\u670d\u52a1\u7aef\u548c\u7528\u6237\u5e94\u7528\u95f4\u5171\u4eab\u5185\u5b58\u4e5f\u662f\u4e0d\u540c\u7684\u3002\u4e3a\u4e86\u5728\u670d\u52a1\u7aef\u548c\u7528\u6237\u5e94\u7528\u95f4\u5171\u4eab\u5185\u5b58\uff0c\u5171\u4eab\u5185\u5b58\u7684\u540d\u5b57\u5fc5\u987b\u4ee5\u5168\u5c40\u540d\u7a7a\u95f4\u524d\u7f00\u201cGlobal\\\\\u201d\u5f00\u5934\u3002\u8fd9\u4e2a\u5168\u5c40\u540d\u7a7a\u95f4\u4f7f\u5f97\u591a\u4e2a\u5ba2\u6237\u7aef\u4f1a\u8bdd\u53ef\u4ee5\u4e0e\u4e00\u4e2a\u670d\u52a1\u7aef\u5e94\u7528\u7a0b\u5e8f\u901a\u4fe1\u3002\u670d\u52a1\u5668\u7ec4\u4ef6\u80fd\u591f\u5728\u5168\u5c40\u540d\u7a7a\u95f4\u4e0a\u521b\u5efa\u5171\u4eab\u5185\u5b58\u3002\u7136\u540e\u4e00\u4e2a\u5ba2\u6237\u7aef\u4f1a\u8bdd\u53ef\u4ee5\u4f7f\u7528\u201cGlobal\u201d\u524d\u7f00\u6253\u5f00\u90a3\u4e2a\u5185\u5b58\u3002<\/p>\n<p align=\"left\">\u5728\u5168\u5c40\u540d\u7a7a\u95f4\u4ece\u4e00\u4e2a\u975e0\u4f1a\u8bdd\u4e0a\u521b\u5efa\u5171\u4eab\u5185\u5b58\u5bf9\u8c61\u662f\u4e00\u4e2a\u9700\u8981\u7279\u6743\u7684\u64cd\u4f5c\u3002<\/p>\n<p align=\"left\">\u6211\u4eec\u91cd\u590d\u4e00\u4e0b\u5728\u53ef\u79fb\u690d\u7684\u5171\u4eab\u5185\u5b58\u5bf9\u8c61\u4e0a\u4f7f\u7528\u7684\u4f8b\u5b50\uff1a\u4e00\u4e2a\u670d\u52a1\u7aef\u8fdb\u7a0b\u521b\u5efa\u4e86\u4e00\u4e2a\u5171\u4eab\u5185\u5b58\u5bf9\u8c61\uff0c\u6620\u5c04\u5b83\u5e76\u4e14\u521d\u59cb\u5316\u6240\u6709\u5b57\u8282\u81f3\u540c\u4e00\u4e2a\u503c\u3002\u4e4b\u540e\uff0c\u5ba2\u6237\u7aef\u8fdb\u7a0b\u6253\u5f00\u5171\u4eab\u5185\u5b58\uff0c\u6620\u5c04\u5b83\u5e76\u4e14\u68c0\u67e5\u6570\u636e\u662f\u4e0d\u662f\u88ab\u6b63\u786e\u7684\u521d\u59cb\u5316\u4e86\u3002\u9700\u8981\u5c0f\u5fc3\u7684\u662f\uff0c<strong>\u5982\u679c\u5728\u5ba2\u6237\u7aef\u8fde\u63a5\u5171\u4eab\u5185\u5b58\u524d\uff0c\u670d\u52a1\u7aef\u5c31\u5b58\u5728\u4e86\uff0c\u5219\u5ba2\u6237\u7aef\u8fde\u63a5\u4f1a\u5931\u8d25<\/strong>\uff0c\u56e0\u4e3a\u5f53\u6ca1\u6709\u8fdb\u7a0b\u5173\u8054\u8fd9\u5757\u5185\u5b58\u65f6\uff0c\u5171\u4eab\u5185\u5b58\u7247\u6bb5\u4f1a\u88ab\u9500\u6bc1\u3002<\/p>\n<p align=\"left\">\u4ee5\u4e0b\u662f\u670d\u52a1\u7aef\u8fdb\u7a0b\uff1a<\/p>\n<div>\n<div class=\"dp-highlighter bg_cpp\">\n<div class=\"bar\">\n<div class=\"tools\"><strong>[cpp]<\/strong>\u00a0<a class=\"ViewSource\" title=\"view plain\" href=\"http:\/\/blog.csdn.net\/great3779\/article\/details\/7226388\">view plain<\/a><span class=\"tracking-ad\" data-mod=\"popu_168\">\u00a0<a class=\"CopyToClipboard\" title=\"copy\" href=\"http:\/\/blog.csdn.net\/great3779\/article\/details\/7226388\" target=\"_blank\" rel=\"noopener\">copy<\/a><\/span><\/div>\n<\/div>\n<ol class=\"dp-cpp\" start=\"1\">\n<li class=\"alt\"><span class=\"preprocessor\">#include\u00a0&lt;boost\/interprocess\/windows_shared_memory.hpp&gt;\u00a0\u00a0<\/span><\/li>\n<li><span class=\"preprocessor\">#include\u00a0&lt;boost\/interprocess\/mapped_region.hpp&gt;\u00a0\u00a0<\/span><\/li>\n<li class=\"alt\"><span class=\"preprocessor\">#include\u00a0&lt;cstring&gt;\u00a0\u00a0<\/span><\/li>\n<li><span class=\"preprocessor\">#include\u00a0&lt;cstdlib&gt;\u00a0\u00a0<\/span><\/li>\n<li class=\"alt\"><span class=\"preprocessor\">#include\u00a0&lt;string&gt;\u00a0\u00a0<\/span><\/li>\n<li><\/li>\n<li class=\"alt\"><span class=\"datatypes\">int\u00a0main(int\u00a0argc,\u00a0char\u00a0*argv[])\u00a0\u00a0<\/span><\/li>\n<li>{<\/li>\n<li class=\"alt\">\u00a0\u00a0\u00a0<span class=\"keyword\">using\u00a0namespace\u00a0boost::interprocess;\u00a0\u00a0<\/span><\/li>\n<li><\/li>\n<li class=\"alt\">\u00a0\u00a0\u00a0<span class=\"keyword\">if(argc\u00a0==\u00a01){\u00a0\u00a0<span class=\"comment\">\/\/Parent\u00a0process\u00a0\u00a0<\/span><\/span><\/li>\n<li>\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0<span class=\"comment\">\/\/Create\u00a0a\u00a0native\u00a0windows\u00a0shared\u00a0memory\u00a0object.\u00a0\u00a0<\/span><\/li>\n<li class=\"alt\">\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0windows_shared_memory\u00a0shm\u00a0(create_only,\u00a0<span class=\"string\">&#8220;MySharedMemory&#8221;,\u00a0read_write,\u00a01000);\u00a0\u00a0<\/span><\/li>\n<li><\/li>\n<li class=\"alt\">\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0<span class=\"comment\">\/\/Map\u00a0the\u00a0whole\u00a0shared\u00a0memory\u00a0in\u00a0this\u00a0process\u00a0\u00a0<\/span><\/li>\n<li>\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0mapped_region\u00a0region(shm,\u00a0read_write);<\/li>\n<li class=\"alt\"><\/li>\n<li>\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0<span class=\"comment\">\/\/Write\u00a0all\u00a0the\u00a0memory\u00a0to\u00a01\u00a0\u00a0<\/span><\/li>\n<li class=\"alt\">\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0std::memset(region.get_address(),\u00a01,\u00a0region.get_size());<\/li>\n<li><\/li>\n<li class=\"alt\">\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0<span class=\"comment\">\/\/Launch\u00a0child\u00a0process\u00a0\u00a0<\/span><\/li>\n<li>\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0std::string\u00a0s(argv[0]);\u00a0s\u00a0+=\u00a0<span class=\"string\">&#8221;\u00a0child\u00a0&#8220;;\u00a0\u00a0<\/span><\/li>\n<li class=\"alt\">\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0<span class=\"keyword\">if(0\u00a0!=\u00a0std::system(s.c_str()))\u00a0\u00a0<\/span><\/li>\n<li>\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0<span class=\"keyword\">return\u00a01;\u00a0\u00a0<\/span><\/li>\n<li class=\"alt\">\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0<span class=\"comment\">\/\/windows_shared_memory\u00a0is\u00a0destroyed\u00a0when\u00a0the\u00a0last\u00a0attached\u00a0process\u00a0dies&#8230;\u00a0\u00a0<\/span><\/li>\n<li>\u00a0\u00a0\u00a0}<\/li>\n<li class=\"alt\">\u00a0\u00a0\u00a0<span class=\"keyword\">else{\u00a0\u00a0<\/span><\/li>\n<li>\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0<span class=\"comment\">\/\/Open\u00a0already\u00a0created\u00a0shared\u00a0memory\u00a0object.\u00a0\u00a0<\/span><\/li>\n<li class=\"alt\">\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0windows_shared_memory\u00a0shm\u00a0(open_only,\u00a0<span class=\"string\">&#8220;MySharedMemory&#8221;,\u00a0read_only);\u00a0\u00a0<\/span><\/li>\n<li><\/li>\n<li class=\"alt\">\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0<span class=\"comment\">\/\/Map\u00a0the\u00a0whole\u00a0shared\u00a0memory\u00a0in\u00a0this\u00a0process\u00a0\u00a0<\/span><\/li>\n<li>\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0mapped_region\u00a0region(shm,\u00a0read_only);<\/li>\n<li class=\"alt\"><\/li>\n<li>\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0<span class=\"comment\">\/\/Check\u00a0that\u00a0memory\u00a0was\u00a0initialized\u00a0to\u00a01\u00a0\u00a0<\/span><\/li>\n<li class=\"alt\">\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0<span class=\"datatypes\">char\u00a0*mem\u00a0=\u00a0<span class=\"keyword\">static_cast&lt;char*&gt;(region.get_address());\u00a0\u00a0<\/span><\/span><\/li>\n<li>\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0<span class=\"keyword\">for(std::<span class=\"datatypes\">size_t\u00a0i\u00a0=\u00a00;\u00a0i\u00a0&lt;\u00a0region.get_size();\u00a0++i)\u00a0\u00a0<\/span><\/span><\/li>\n<li class=\"alt\">\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0<span class=\"keyword\">if(*mem++\u00a0!=\u00a01)\u00a0\u00a0<\/span><\/li>\n<li>\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0<span class=\"keyword\">return\u00a01;\u00a0\u00a0\u00a0<span class=\"comment\">\/\/Error\u00a0checking\u00a0memory\u00a0\u00a0<\/span><\/span><\/li>\n<li class=\"alt\">\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0<span class=\"keyword\">return\u00a00;\u00a0\u00a0<\/span><\/li>\n<li>\u00a0\u00a0\u00a0}<\/li>\n<li class=\"alt\">\u00a0\u00a0\u00a0<span class=\"keyword\">return\u00a00;\u00a0\u00a0<\/span><\/li>\n<li>}<\/li>\n<\/ol>\n<\/div>\n<\/div>\n<p align=\"left\">\u5982\u4e0a\u6240\u793a\uff0c\u539f\u751fwindows\u5171\u4eab\u5185\u5b58\u9700\u8981\u540c\u6b65\u63aa\u65bd\u4ee5\u4fdd\u8bc1\u5728\u5ba2\u6237\u7aef\u767b\u9646\u524d\uff0c\u5171\u4eab\u5185\u5b58\u4e0d\u4f1a\u88ab\u9500\u6bc1\u3002<\/p>\n<p align=\"left\">\n<h3><a name=\"t12\"><\/a><a name=\"XSI\u5171\u4eab\u5185\u5b58\"><\/a><a name=\"_Toc315882204\"><\/a>XSI\u5171\u4eab\u5185\u5b58<\/h3>\n<p align=\"left\">\u5728\u8bb8\u591aUNIX\u7cfb\u7edf\u4e2d\uff0c\u64cd\u4f5c\u7cfb\u7edf\u63d0\u4f9b\u4e86\u53e6\u5916\u4e00\u79cd\u5171\u4eab\u5185\u5b58\u673a\u5236\uff0cXSI\uff08X\/Open\u7cfb\u7edf\u63a5\u53e3\uff09\u5171\u4eab\u5185\u5b58\u6bb5\uff0c\u4e5f\u5373\u8457\u540d\u7684\u201cSystem V\u201d\u5171\u4eab\u5185\u5b58\u3002\u8fd9\u79cd\u5171\u4eab\u5185\u5b58\u673a\u5236\u975e\u5e38\u6d41\u884c\u4e14\u53ef\u79fb\u690d\uff0c\u5e76\u4e14\u5b83\u4e0d\u662f\u57fa\u4e8e\u6587\u4ef6\u6620\u5c04\u8bed\u4e49\uff0c\u800c\u662f\u4f7f\u7528\u7279\u6b8a\u51fd\u6570\uff08shmget,\u00a0shmat,\u00a0shmdt,\u00a0shmctl\u7b49\u7b49\uff09\u3002<\/p>\n<p align=\"left\">\u4e0ePOSIX\u5171\u4eab\u5185\u5b58\u6bb5\u4e0d\u540c\uff0cXSI\u5171\u4eab\u5185\u5b58\u6bb5\u4e0d\u662f\u7531\u540d\u5b57\u6807\u8bc6\u800c\u662f\u7528\u901a\u5e38\u7531ftok\u521b\u5efa\u7684\u5173\u952e\u5b57\u6807\u8bc6\u3002XSI\u5171\u4eab\u5185\u5b58\u5177\u6709\u5185\u6838\u751f\u547d\u5468\u671f\u5e76\u4e14\u5fc5\u987b\u663e\u5f0f\u91ca\u653e\u3002XSI\u5171\u4eab\u5185\u5b58\u4e0d\u652f\u6301copy-on-write\u548c\u90e8\u5206\u5171\u4eab\u5185\u5b58\u6620\u5c04\uff0c\u4f46\u5b83\u652f\u6301\u533f\u540d\u5171\u4eab\u5185\u5b58\u3002<\/p>\n<p align=\"left\"><strong>Boost.Interprocess<\/strong>\u63d0\u4f9b\u4e86\u7b80\u5355\u7684\uff08xsi_shared_memory\uff09\u548c\u6613\u7ba1\u7406\u7684\uff08<a href=\"http:\/\/www.boost.org\/doc\/libs\/1_49_0_beta1\/doc\/html\/boost_interprocess_reference.html#boost.interprocess.managed_xsi_shared_memory\">managed_xsi_shared_memory<\/a>\uff09\u5171\u4eab\u5185\u5b58\u7c7b\u6765\u7b80\u5316XSI\u5171\u4eab\u5185\u5b58\u7684\u4f7f\u7528\u3002\u5b83\u8fd8\u4f7f\u7528\u4e86\u7b80\u5355\u7684xsi_key\u7c7b\u6765\u5c01\u88c5\u5173\u952e\u5b57\u6784\u5efa\u3002<\/p>\n<p align=\"left\">\u6211\u4eec\u518d\u91cd\u590d\u4e00\u4e0b\u5728\u53ef\u79fb\u690d\u7684\u5171\u4eab\u5185\u5b58\u5bf9\u8c61\u4e0a\u4f7f\u7528\u7684\u4f8b\u5b50\uff1a\u4e00\u4e2a\u670d\u52a1\u7aef\u8fdb\u7a0b\u521b\u5efa\u4e86\u4e00\u4e2a\u5171\u4eab\u5185\u5b58\u5bf9\u8c61\uff0c\u6620\u5c04\u5b83\u5e76\u4e14\u521d\u59cb\u5316\u6240\u6709\u5b57\u8282\u81f3\u540c\u4e00\u4e2a\u503c\u3002\u4e4b\u540e\uff0c\u5ba2\u6237\u7aef\u8fdb\u7a0b\u6253\u5f00\u5171\u4eab\u5185\u5b58\uff0c\u6620\u5c04\u5b83\u5e76\u4e14\u68c0\u67e5\u6570\u636e\u662f\u4e0d\u662f\u88ab\u6b63\u786e\u7684\u521d\u59cb\u5316\u4e86\u3002<\/p>\n<p align=\"left\">\u4ee5\u4e0b\u662f\u670d\u52a1\u7aef\u8fdb\u7a0b\uff1a<\/p>\n<div>\n<div class=\"dp-highlighter bg_cpp\">\n<div class=\"bar\">\n<div class=\"tools\"><strong>[cpp]<\/strong>\u00a0<a class=\"ViewSource\" title=\"view plain\" href=\"http:\/\/blog.csdn.net\/great3779\/article\/details\/7226388\">view plain<\/a><span class=\"tracking-ad\" data-mod=\"popu_168\">\u00a0<a class=\"CopyToClipboard\" title=\"copy\" href=\"http:\/\/blog.csdn.net\/great3779\/article\/details\/7226388\" target=\"_blank\" rel=\"noopener\">copy<\/a><\/span><\/div>\n<\/div>\n<ol class=\"dp-cpp\" start=\"1\">\n<li class=\"alt\"><span class=\"preprocessor\">#include\u00a0&lt;boost\/interprocess\/xsi_shared_memory.hpp&gt;\u00a0\u00a0<\/span><\/li>\n<li><span class=\"preprocessor\">#include\u00a0&lt;boost\/interprocess\/mapped_region.hpp&gt;\u00a0\u00a0<\/span><\/li>\n<li class=\"alt\"><span class=\"preprocessor\">#include\u00a0&lt;cstring&gt;\u00a0\u00a0<\/span><\/li>\n<li><span class=\"preprocessor\">#include\u00a0&lt;cstdlib&gt;\u00a0\u00a0<\/span><\/li>\n<li class=\"alt\"><span class=\"preprocessor\">#include\u00a0&lt;string&gt;\u00a0\u00a0<\/span><\/li>\n<li><\/li>\n<li class=\"alt\"><span class=\"keyword\">using\u00a0namespace\u00a0boost::interprocess;\u00a0\u00a0<\/span><\/li>\n<li><\/li>\n<li class=\"alt\"><span class=\"keyword\">void\u00a0remove_old_shared_memory(const\u00a0xsi_key\u00a0&amp;key)\u00a0\u00a0<\/span><\/li>\n<li>{<\/li>\n<li class=\"alt\">\u00a0\u00a0\u00a0<span class=\"keyword\">try{\u00a0\u00a0<\/span><\/li>\n<li>\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0xsi_shared_memory\u00a0xsi(open_only,\u00a0key);<\/li>\n<li class=\"alt\">\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0xsi_shared_memory::remove(xsi.get_shmid());<\/li>\n<li>\u00a0\u00a0\u00a0}<\/li>\n<li class=\"alt\">\u00a0\u00a0\u00a0<span class=\"keyword\">catch(interprocess_exception\u00a0&amp;e){\u00a0\u00a0<\/span><\/li>\n<li>\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0<span class=\"keyword\">if(e.get_error_code()\u00a0!=\u00a0not_found_error)\u00a0\u00a0<\/span><\/li>\n<li class=\"alt\">\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0<span class=\"keyword\">throw;\u00a0\u00a0<\/span><\/li>\n<li>\u00a0\u00a0\u00a0}<\/li>\n<li class=\"alt\">}<\/li>\n<li><\/li>\n<li class=\"alt\"><span class=\"datatypes\">int\u00a0main(int\u00a0argc,\u00a0char\u00a0*argv[])\u00a0\u00a0<\/span><\/li>\n<li>{<\/li>\n<li class=\"alt\">\u00a0\u00a0\u00a0<span class=\"keyword\">if(argc\u00a0==\u00a01){\u00a0\u00a0<span class=\"comment\">\/\/Parent\u00a0process\u00a0\u00a0<\/span><\/span><\/li>\n<li>\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0<span class=\"comment\">\/\/Build\u00a0XSI\u00a0key\u00a0(ftok\u00a0based)\u00a0\u00a0<\/span><\/li>\n<li class=\"alt\">\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0xsi_key\u00a0key(argv[0],\u00a01);<\/li>\n<li><\/li>\n<li class=\"alt\">\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0remove_old_shared_memory(key);<\/li>\n<li><\/li>\n<li class=\"alt\">\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0<span class=\"comment\">\/\/Create\u00a0a\u00a0shared\u00a0memory\u00a0object.\u00a0\u00a0<\/span><\/li>\n<li>\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0xsi_shared_memory\u00a0shm\u00a0(create_only,\u00a0key,\u00a01000);<\/li>\n<li class=\"alt\"><\/li>\n<li>\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0<span class=\"comment\">\/\/Remove\u00a0shared\u00a0memory\u00a0on\u00a0destruction\u00a0\u00a0<\/span><\/li>\n<li class=\"alt\">\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0<span class=\"keyword\">struct\u00a0shm_remove\u00a0\u00a0<\/span><\/li>\n<li>\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0{<\/li>\n<li class=\"alt\">\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0<span class=\"datatypes\">int\u00a0shmid_;\u00a0\u00a0<\/span><\/li>\n<li>\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0shm_remove(<span class=\"datatypes\">int\u00a0shmid)\u00a0:\u00a0shmid_(shmid){}\u00a0\u00a0<\/span><\/li>\n<li class=\"alt\">\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0~shm_remove(){\u00a0xsi_shared_memory::remove(shmid_);\u00a0}<\/li>\n<li>\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0}\u00a0remover(shm.get_shmid());<\/li>\n<li class=\"alt\"><\/li>\n<li>\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0<span class=\"comment\">\/\/Map\u00a0the\u00a0whole\u00a0shared\u00a0memory\u00a0in\u00a0this\u00a0process\u00a0\u00a0<\/span><\/li>\n<li class=\"alt\">\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0mapped_region\u00a0region(shm,\u00a0read_write);<\/li>\n<li><\/li>\n<li class=\"alt\">\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0<span class=\"comment\">\/\/Write\u00a0all\u00a0the\u00a0memory\u00a0to\u00a01\u00a0\u00a0<\/span><\/li>\n<li>\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0std::memset(region.get_address(),\u00a01,\u00a0region.get_size());<\/li>\n<li class=\"alt\"><\/li>\n<li>\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0<span class=\"comment\">\/\/Launch\u00a0child\u00a0process\u00a0\u00a0<\/span><\/li>\n<li class=\"alt\">\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0std::string\u00a0s(argv[0]);\u00a0s\u00a0+=\u00a0<span class=\"string\">&#8221;\u00a0child\u00a0&#8220;;\u00a0\u00a0<\/span><\/li>\n<li>\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0<span class=\"keyword\">if(0\u00a0!=\u00a0std::system(s.c_str()))\u00a0\u00a0<\/span><\/li>\n<li class=\"alt\">\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0<span class=\"keyword\">return\u00a01;\u00a0\u00a0<\/span><\/li>\n<li>\u00a0\u00a0\u00a0}<\/li>\n<li class=\"alt\">\u00a0\u00a0\u00a0<span class=\"keyword\">else{\u00a0\u00a0<\/span><\/li>\n<li>\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0<span class=\"comment\">\/\/Build\u00a0XSI\u00a0key\u00a0(ftok\u00a0based)\u00a0\u00a0<\/span><\/li>\n<li class=\"alt\">\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0xsi_key\u00a0key(argv[0],\u00a01);<\/li>\n<li><\/li>\n<li class=\"alt\">\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0<span class=\"comment\">\/\/Create\u00a0a\u00a0shared\u00a0memory\u00a0object.\u00a0\u00a0<\/span><\/li>\n<li>\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0xsi_shared_memory\u00a0shm\u00a0(open_only,\u00a0key);<\/li>\n<li class=\"alt\"><\/li>\n<li>\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0<span class=\"comment\">\/\/Map\u00a0the\u00a0whole\u00a0shared\u00a0memory\u00a0in\u00a0this\u00a0process\u00a0\u00a0<\/span><\/li>\n<li class=\"alt\">\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0mapped_region\u00a0region(shm,\u00a0read_only);<\/li>\n<li><\/li>\n<li class=\"alt\">\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0<span class=\"comment\">\/\/Check\u00a0that\u00a0memory\u00a0was\u00a0initialized\u00a0to\u00a01\u00a0\u00a0<\/span><\/li>\n<li>\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0<span class=\"datatypes\">char\u00a0*mem\u00a0=\u00a0<span class=\"keyword\">static_cast&lt;char*&gt;(region.get_address());\u00a0\u00a0<\/span><\/span><\/li>\n<li class=\"alt\">\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0<span class=\"keyword\">for(std::<span class=\"datatypes\">size_t\u00a0i\u00a0=\u00a00;\u00a0i\u00a0&lt;\u00a0region.get_size();\u00a0++i)\u00a0\u00a0<\/span><\/span><\/li>\n<li>\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0<span class=\"keyword\">if(*mem++\u00a0!=\u00a01)\u00a0\u00a0<\/span><\/li>\n<li class=\"alt\">\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0<span class=\"keyword\">return\u00a01;\u00a0\u00a0\u00a0<span class=\"comment\">\/\/Error\u00a0checking\u00a0memory\u00a0\u00a0<\/span><\/span><\/li>\n<li>\u00a0\u00a0\u00a0}<\/li>\n<li class=\"alt\">\u00a0\u00a0\u00a0<span class=\"keyword\">return\u00a00;\u00a0\u00a0<\/span><\/li>\n<li>}<\/li>\n<\/ol>\n<\/div>\n<\/div>\n<p align=\"left\">\n<h2><a name=\"t13\"><\/a><a name=\"\u5185\u5b58\u6620\u5c04\u6587\u4ef6\"><\/a><a name=\"_Toc315882205\"><\/a>\u5185\u5b58\u6620\u5c04\u6587\u4ef6<\/h2>\n<p><strong>\u00a0<\/strong><\/p>\n<h3><a name=\"t14\"><\/a><a name=\"\u4ec0\u4e48\u662f\u5185\u5b58\u6620\u5c04\u6587\u4ef6\"><\/a><a name=\"_Toc315882206\"><\/a>\u4ec0\u4e48\u662f\u5185\u5b58\u6620\u5c04\u6587\u4ef6<\/h3>\n<p align=\"left\">\u6587\u4ef6\u6620\u5c04\u662f\u4e00\u4e2a\u6587\u4ef6\u7684\u5185\u5bb9\u548c\u4e00\u4e2a\u8fdb\u7a0b\u7684\u90e8\u5206\u5730\u5740\u7a7a\u95f4\u7684\u5173\u8054\u3002\u7cfb\u7edf\u521b\u5efa\u4e00\u4e2a\u6587\u4ef6\u6620\u5c04\u6765\u8054\u7cfb\u6587\u4ef6\u548c\u8fdb\u7a0b\u7684\u5730\u5740\u7a7a\u95f4\u3002\u4e00\u4e2a\u6620\u5c04\u533a\u57df\u662f\u5730\u5740\u7a7a\u95f4\u7684\u4e00\u90e8\u5206\uff0c\u8fdb\u7a0b\u4f7f\u7528\u8fd9\u90e8\u5206\u6765\u8bbf\u95ee\u6587\u4ef6\u7684\u5185\u5bb9\u3002\u4e00\u4e2a\u5355\u4e2a\u7684\u6587\u4ef6\u6620\u5c04\u53ef\u4ee5\u6709\u51e0\u4e2a\u6620\u5c04\u533a\u57df\uff0c\u4ee5\u4fbf\u4f7f\u7528\u8005\u80fd\u5173\u8054\u6587\u4ef6\u7684\u591a\u4e2a\u90e8\u5206\u548c\u8fdb\u7a0b\u7684\u5730\u5740\u7a7a\u95f4\uff0c\u800c\u4e0d\u8981\u6620\u5c04\u6574\u4e2a\u6587\u4ef6\u81f3\u5730\u5740\u7a7a\u95f4\uff0c\u56e0\u4e3a\u6587\u4ef6\u7684\u5927\u5c0f\u53ef\u80fd\u4f1a\u6bd4\u6574\u4e2a\u8fdb\u7a0b\u5730\u5740\u7a7a\u95f4\u8fd8\u5927\uff08\u5728\u901a\u5e3832\u4f4d\u7cfb\u7edf\u4e0b\u7684\u4e00\u4e2a9GB\u7684DVD\u955c\u50cf\u6587\u4ef6\uff09\u3002\u8fdb\u7a0b\u4f7f\u7528\u6307\u9488\u4ece\u6587\u4ef6\u8bfb\u5199\u6570\u636e\uff0c\u5c31\u597d\u50cf\u4f7f\u7528\u52a8\u6001\u5185\u5b58\u4e00\u6837\u3002\u6587\u4ef6\u6620\u5c04\u6709\u4ee5\u4e0b\u51e0\u4e2a\u4f18\u70b9\uff1a<\/p>\n<ul type=\"disc\">\n<li>\u7edf\u4e00\u8d44\u6e90\u4f7f\u7528\u3002\u6587\u4ef6\u548c\u5185\u5b58\u80fd\u4f7f\u7528\u76f8\u540c\u7684\u51fd\u6570\u6765\u64cd\u4f5c\u3002<\/li>\n<li>\u6587\u4ef6\u6570\u636e\u81ea\u52a8\u540c\u6b65\u4ee5\u53ca\u4ece\u64cd\u4f5c\u7cfb\u7edf\u7f13\u5b58\u3002<\/li>\n<li>\u5728\u6587\u4ef6\u4e2d\u590d\u7528C++\u529f\u80fd\uff08STL\u5bb9\u5668\uff0c\u7b97\u6cd5\uff09\u3002<\/li>\n<li>\u5728\u4e24\u4e2a\u6216\u591a\u4e2a\u5e94\u7528\u95f4\u5171\u4eab\u5185\u5b58\u3002<\/li>\n<li>\u5141\u8bb8\u9ad8\u6548\u7684\u5904\u7406\u4e00\u4e2a\u5927\u6587\u4ef6\uff0c\u800c\u4e0d\u9700\u8981\u5c06\u6574\u4e2a\u6587\u4ef6\u6620\u5c04\u81f3\u5185\u5b58\u4e2d\u3002<\/li>\n<li>\u5982\u679c\u51e0\u4e2a\u8fdb\u7a0b\u4f7f\u7528\u540c\u6837\u7684\u6587\u4ef6\u6620\u5c04\u6765\u521b\u5efa\u4e00\u4e2a\u6587\u4ef6\u7684\u6620\u5c04\u533a\u57df\uff0c\u6bcf\u4e2a\u8fdb\u7a0b\u89c6\u56fe\u90fd\u5305\u542b\u4e86\u78c1\u76d8\u4e0a\u6587\u4ef6\u7684\u76f8\u540c\u526f\u672c\u3002<\/li>\n<\/ul>\n<p align=\"left\">\u6587\u4ef6\u6620\u5c04\u4e0d\u4ec5\u7528\u4e8e\u8fdb\u7a0b\u95f4\u901a\u4fe1\uff0c\u5b83\u4e5f\u80fd\u7528\u4e8e\u7b80\u5316\u6587\u4ef6\u4f7f\u7528\uff0c\u56e0\u6b64\u4f7f\u7528\u8005\u4e0d\u9700\u8981\u4f7f\u7528\u6587\u4ef6\u7ba1\u7406\u51fd\u6570\u6765\u5199\u6587\u4ef6\u3002\u4f7f\u7528\u8005\u4ec5\u9700\u5c06\u6570\u636e\u5199\u5165\u8fdb\u7a0b\u7684\u5185\u5b58\uff0c\u7136\u540e\u64cd\u4f5c\u7cfb\u7edf\u5c06\u6570\u636e\u8f6c\u50a8\u81f3\u6587\u4ef6\u3002<\/p>\n<p align=\"left\">\u5f53\u4e24\u4e2a\u8fdb\u7a0b\u5728\u5185\u5b58\u4e2d\u6620\u5c04\u4e86\u540c\u4e00\u4efd\u6587\u4ef6\uff0c\u5219\u4e00\u4e2a\u8fdb\u7a0b\u7528\u4e8e\u5199\u6570\u636e\u7684\u5728\u5185\u5b58\u80fd\u591f\u88ab\u53e6\u5916\u4e00\u4e2a\u8fdb\u7a0b\u68c0\u6d4b\u5230\uff0c\u56e0\u6b64\u5185\u5b58\u6620\u5c04\u6587\u4ef6\u80fd\u591f\u88ab\u7528\u4e8e\u8fdb\u7a0b\u95f4\u901a\u4fe1\u673a\u5236\u3002\u6211\u4eec\u53ef\u4ee5\u8ba4\u4e3a\u5185\u5b58\u6620\u5c04\u6587\u4ef6\u63d0\u4f9b\u4e86\u4e0e\u5171\u4eab\u5185\u5b58\u76f8\u540c\u7684\u8fdb\u7a0b\u95f4\u901a\u4fe1\u673a\u5236\uff0c\u5e76\u4e14\u8fd8\u5177\u6709\u989d\u5916\u7684\u6587\u4ef6\u7cfb\u7edf\u6301\u4e45\u5316\u6027\u8d28\u3002\u7136\u800c\uff0c\u56e0\u4e3a\u64cd\u4f5c\u7cfb\u7edf\u5fc5\u987b\u540c\u6b65\u6587\u4ef6\u5185\u5bb9\u548c\u5185\u5b58\u5185\u5bb9\uff0c\u56e0\u6b64\u5185\u5b58\u6620\u5c04\u6587\u4ef6\u6ca1\u6709\u5171\u4eab\u5185\u5b58\u5feb\u3002<\/p>\n<p align=\"left\">\n<h3><a name=\"t15\"><\/a><a name=\"\u4f7f\u7528\u6620\u5c04\u6587\u4ef6\"><\/a><a name=\"_Toc315882207\"><\/a>\u4f7f\u7528\u6620\u5c04\u6587\u4ef6<\/h3>\n<p align=\"left\">\u4e3a\u4e86\u4f7f\u7528\u5185\u5b58\u6620\u5c04\u6587\u4ef6\uff0c\u6211\u4eec\u9700\u8981\u6267\u884c\u4ee5\u4e0b\u4e24\u4e2a\u57fa\u672c\u6b65\u9aa4\uff1a<\/p>\n<ul type=\"disc\">\n<li>\u521b\u5efa\u4e00\u4e2a\u53ef\u6620\u5c04\u7684\u5bf9\u8c61\u7528\u6765\u4ee3\u8868\u6587\u4ef6\u7cfb\u7edf\u4e2d\u5df2\u7ecf\u521b\u5efa\u7684\u67d0\u4e2a\u6587\u4ef6\u3002\u8fd9\u4e2a\u5bf9\u8c61\u5c06\u7528\u4e8e\u521b\u5efa\u6b64\u6587\u4ef6\u7684\u591a\u4e2a\u6620\u5c04\u533a\u57df\u3002<\/li>\n<li>\u5c06\u6574\u4e2a\u6216\u90e8\u5206\u6587\u4ef6\u4e0e\u88ab\u8c03\u7528\u8fdb\u7a0b\u7684\u5730\u5740\u7a7a\u95f4\u5173\u8054\u3002\u64cd\u4f5c\u7cfb\u7edf\u5728\u88ab\u8c03\u7528\u8fdb\u7a0b\u7684\u5730\u5740\u7a7a\u95f4\u4e0a\u641c\u5bfb\u4e00\u5757\u8db3\u591f\u5927\u7684\u5185\u5b58\u5730\u5740\u8303\u56f4\uff0c\u5e76\u4e14\u6807\u8bb0\u5730\u5740\u8303\u56f4\u4e3a\u4e00\u4e2a\u7279\u6b8a\u8303\u56f4\u3002\u5728\u5730\u5740\u8303\u56f4\u4e0a\u7684\u4efb\u4f55\u6539\u53d8\u4f1a\u81ea\u52a8\u88ab\u53e6\u4e00\u4e2a\u6620\u5c04\u4e86\u540c\u4e00\u4e2a\u6587\u4ef6\u7684\u8fdb\u7a0b\u68c0\u6d4b\u5230\uff0c\u5e76\u4e14\u8fd9\u4e9b\u6539\u53d8\u4f1a\u81ea\u52a8\u4f20\u8f93\u81f3\u78c1\u76d8\u4e0a\u3002<\/li>\n<\/ul>\n<p align=\"left\">\u4e00\u65e6\u6210\u529f\u5b8c\u6210\u4e86\u4ee5\u4e0a\u4e24\u6b65\uff0c\u8fdb\u7a0b\u53ef\u4ee5\u5f00\u59cb\u5728\u5730\u5740\u7a7a\u95f4\u4e0a\u8bfb\u5199\uff0c\u7136\u540e\u4e0e\u53e6\u4e00\u4e2a\u8fdb\u7a0b\u53d1\u9001\u548c\u63a5\u6536\u6570\u636e\u3002\u540c\u65f6\u540c\u6b65\u6587\u4ef6\u5185\u5bb9\u548c\u6620\u5c04\u533a\u57df\u7684\u6539\u53d8\u3002\u73b0\u5728\uff0c\u8ba9\u6211\u4eec\u4e00\u8d77\u770b\u770b\u5982\u4f55\u7528<strong>Boost.Interprocess<\/strong>\u505a\u5230\u8fd9\u70b9\u3002<\/p>\n<p align=\"left\">\n<h3><a name=\"t16\"><\/a><a name=\"\u5934\u6587\u4ef6\"><\/a><a name=\"_Toc315882208\"><\/a>\u5934\u6587\u4ef6<\/h3>\n<p align=\"left\">\u4e3a\u4e86\u7ba1\u7406\u6620\u5c04\u6587\u4ef6\uff0c\u4f60\u4ec5\u9700\u5305\u542b\u5982\u4e0b\u5934\u6587\u4ef6\uff1a<\/p>\n<div>\n<pre>#include &lt;boost\/interprocess\/file_mapping.hpp&gt;<\/pre>\n<\/div>\n<p align=\"left\"><strong>\u00a0<\/strong><\/p>\n<h3><a name=\"t17\"><\/a><a name=\"\u521b\u5efa\u4e00\u4e2a\u6587\u4ef6\u6620\u5c04\"><\/a><a name=\"_Toc315882209\"><\/a>\u521b\u5efa\u4e00\u4e2a\u6587\u4ef6\u6620\u5c04<\/h3>\n<p align=\"left\">\u9996\u5148\uff0c\u6211\u4eec\u5fc5\u987b\u8fde\u63a5\u4e00\u4e2a\u6587\u4ef6\u7684\u5185\u5bb9\u4e0e\u8fdb\u7a0b\u7684\u5730\u5740\u7a7a\u95f4\u3002\u4e3a\u4e86\u505a\u5230\u8fd9\u70b9\uff0c\u6211\u4eec\u5fc5\u987b\u521b\u5efa\u4e00\u4e2a\u4ee3\u8868\u90a3\u4e2a\u6587\u4ef6\u7684\u53ef\u6620\u5c04\u5bf9\u8c61\u3002\u521b\u5efa\u4e00\u4e2a\u6587\u4ef6\u6620\u5c04\u5bf9\u8c61\u5728Boost.Interprocess\u4e2d\u5b9e\u73b0\u5982\u4e0b\uff1a<\/p>\n<div>\n<div class=\"dp-highlighter bg_cpp\">\n<div class=\"bar\">\n<div class=\"tools\"><strong>[cpp]<\/strong>\u00a0<a class=\"ViewSource\" title=\"view plain\" href=\"http:\/\/blog.csdn.net\/great3779\/article\/details\/7226388\">view plain<\/a><span class=\"tracking-ad\" data-mod=\"popu_168\">\u00a0<a class=\"CopyToClipboard\" title=\"copy\" href=\"http:\/\/blog.csdn.net\/great3779\/article\/details\/7226388\" target=\"_blank\" rel=\"noopener\">copy<\/a><\/span><\/div>\n<\/div>\n<ol class=\"dp-cpp\" start=\"1\">\n<li class=\"alt\"><span class=\"keyword\">using\u00a0boost::interprocess;\u00a0\u00a0<\/span><\/li>\n<li>file_mapping\u00a0m_file<\/li>\n<li class=\"alt\">\u00a0\u00a0\u00a0(<span class=\"string\">&#8220;\/usr\/home\/file&#8221;\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0<span class=\"comment\">\/\/filename\u00a0\u00a0<\/span><\/span><\/li>\n<li>\u00a0\u00a0\u00a0,read_write\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0<span class=\"comment\">\/\/read-write\u00a0mode\u00a0\u00a0<\/span><\/li>\n<li class=\"alt\">\u00a0\u00a0\u00a0);<\/li>\n<\/ol>\n<\/div>\n<\/div>\n<p align=\"left\">\u73b0\u5728\uff0c\u6211\u4eec\u53ef\u4ee5\u4f7f\u7528\u65b0\u521b\u5efa\u7684\u5bf9\u8c61\u6765\u521b\u5efa\u5185\u5b58\u533a\u57df\u3002\u66f4\u591a\u5173\u4e8e\u8fd9\u4e2a\u7c7b\u7684\u8be6\u60c5\uff0c\u8bf7\u53c2\u8003\u00a0<a title=\"Class file_mapping\" href=\"http:\/\/www.boost.org\/doc\/libs\/1_49_0_beta1\/doc\/html\/boost\/interprocess\/file_mapping.html\">boost::interprocess::file_mapping<\/a>\u3002<\/p>\n<p align=\"left\">\n<h3><a name=\"t18\"><\/a><a name=\"\u6620\u5c04\u6587\u4ef6\u5728\u5185\u5b58\u4e2d\u7684\u5185\u5bb9\"><\/a><a name=\"_Toc315882210\"><\/a>\u6620\u5c04\u6587\u4ef6\u5728\u5185\u5b58\u4e2d\u7684\u5185\u5bb9<\/h3>\n<p align=\"left\">\u5f53\u521b\u5efa\u4e86\u4e00\u4e2a\u6587\u4ef6\u6620\u5c04\u540e\uff0c\u4e00\u4e2a\u8fdb\u7a0b\u4ec5\u9700\u5728\u8fdb\u7a0b\u5730\u5740\u7a7a\u95f4\u4e0a\u6620\u5c04\u5171\u4eab\u5185\u5b58\u3002\u4f7f\u7528\u8005\u53ef\u4ee5\u6620\u5c04\u6574\u4e2a\u5171\u4eab\u5185\u5b58\u6216\u4ec5\u4ec5\u4e00\u90e8\u5206\u3002\u4f7f\u7528mapped_region\u7c7b\u5b8c\u6210\u6620\u5c04\u8fc7\u7a0b\u3002\u5982\u524d\u6240\u8ff0\uff0c\u8fd9\u4e2a\u7c7b\u4ee3\u8868\u4e86\u4e00\u5757\u5185\u5b58\u533a\u57df\uff0c\u6b64\u533a\u57df\u6620\u5c04\u81ea\u5171\u4eab\u5185\u5b58\u6216\u5176\u4ed6\u5177\u6709\u6620\u5c04\u80fd\u529b\u7684\u8bbe\u5907\uff1a<\/p>\n<div>\n<div class=\"dp-highlighter bg_cpp\">\n<div class=\"bar\">\n<div class=\"tools\"><strong>[cpp]<\/strong>\u00a0<a class=\"ViewSource\" title=\"view plain\" href=\"http:\/\/blog.csdn.net\/great3779\/article\/details\/7226388\">view plain<\/a><span class=\"tracking-ad\" data-mod=\"popu_168\">\u00a0<a class=\"CopyToClipboard\" title=\"copy\" href=\"http:\/\/blog.csdn.net\/great3779\/article\/details\/7226388\" target=\"_blank\" rel=\"noopener\">copy<\/a><\/span><\/div>\n<\/div>\n<ol class=\"dp-cpp\" start=\"1\">\n<li class=\"alt\"><span class=\"keyword\">using\u00a0boost::interprocess;\u00a0\u00a0<\/span><\/li>\n<li>std::<span class=\"datatypes\">size_t\u00a0FileSize\u00a0=\u00a0&#8230;\u00a0\u00a0<\/span><\/li>\n<li class=\"alt\"><\/li>\n<li><span class=\"comment\">\/\/Map\u00a0the\u00a0second\u00a0half\u00a0of\u00a0the\u00a0file\u00a0\u00a0<\/span><\/li>\n<li class=\"alt\">mapped_region\u00a0region<\/li>\n<li>\u00a0\u00a0\u00a0(\u00a0m_file\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0<span class=\"comment\">\/\/Memory-mappable\u00a0object\u00a0\u00a0<\/span><\/li>\n<li class=\"alt\">\u00a0\u00a0\u00a0,\u00a0read_write\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0<span class=\"comment\">\/\/Access\u00a0mode\u00a0\u00a0<\/span><\/li>\n<li>\u00a0\u00a0\u00a0,\u00a0FileSize\/2\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0<span class=\"comment\">\/\/Offset\u00a0from\u00a0the\u00a0beginning\u00a0of\u00a0shm\u00a0\u00a0<\/span><\/li>\n<li class=\"alt\">\u00a0\u00a0\u00a0,\u00a0FileSize-FileSize\/2\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0<span class=\"comment\">\/\/Length\u00a0of\u00a0the\u00a0region\u00a0\u00a0<\/span><\/li>\n<li>\u00a0\u00a0\u00a0);<\/li>\n<li class=\"alt\"><\/li>\n<li><span class=\"comment\">\/\/Get\u00a0the\u00a0address\u00a0of\u00a0the\u00a0region\u00a0\u00a0<\/span><\/li>\n<li class=\"alt\">region.get_address();<\/li>\n<li><\/li>\n<li class=\"alt\"><span class=\"comment\">\/\/Get\u00a0the\u00a0size\u00a0of\u00a0the\u00a0region\u00a0\u00a0<\/span><\/li>\n<li>region.get_size();<\/li>\n<\/ol>\n<\/div>\n<\/div>\n<p align=\"left\">\u4f7f\u7528\u8005\u53ef\u4ee5\u4ece\u53ef\u6620\u5c04\u7684\u5bf9\u8c61\u4e2d\u6307\u5b9a\u6620\u5c04\u533a\u57df\u7684\u8d77\u59cb\u504f\u79fb\u91cf\u4ee5\u53ca\u6620\u5c04\u533a\u57df\u7684\u5927\u5c0f\u3002\u5982\u679c\u672a\u6307\u5b9a\u504f\u79fb\u91cf\u6216\u5927\u5c0f\uff0c\u5219\u6574\u4e2a\u6587\u4ef6\u88ab\u6620\u5c04\u3002\u5982\u679c\u4ec5\u6307\u5b9a\u4e86\u504f\u79fb\u91cf\u800c\u6ca1\u6709\u6307\u5b9a\u5927\u5c0f\uff0c\u5219\u6620\u5c04\u533a\u57df\u8986\u76d6\u4e86\u4ece\u504f\u79fb\u91cf\u5230\u6587\u4ef6\u7ed3\u5c3e\u7684\u6574\u4e2a\u533a\u57df\u3002<\/p>\n<p align=\"left\">\u5982\u679c\u591a\u4e2a\u8fdb\u7a0b\u6620\u5c04\u4e86\u540c\u4e00\u4e2a\u6587\u4ef6\uff0c\u5e76\u67d0\u8fdb\u7a0b\u4fee\u6539\u4e86\u4e5f\u88ab\u5176\u4ed6\u8fdb\u7a0b\u6620\u5c04\u7684\u4e00\u5757\u5185\u5b58\u533a\u57df\u8303\u56f4<\/p>\n<p align=\"left\">\uff0c\u5219\u4fee\u6539\u9a6c\u4e0a\u4f1a\u88ab\u5176\u4ed6\u8fdb\u7a0b\u68c0\u6d4b\u5230\u3002\u7136\u540e\uff0c\u78c1\u76d8\u4e0a\u7684\u6587\u4ef6\u5185\u5bb9\u4e0d\u662f\u7acb\u5373\u66f4\u65b0\u7684\uff0c\u56e0\u4e3a\u8fd9\u4f1a\u5f71\u54cd\u6027\u80fd\uff08\u5199\u78c1\u76d8\u6bd4\u5199\u5185\u5b58\u8981\u6162\u51e0\u500d\uff09\u3002\u5982\u679c\u4f7f\u7528\u8005\u60f3\u786e\u5b9a\u6587\u4ef6\u5185\u5bb9\u88ab\u66f4\u65b0\u4e86\uff0c\u4ed6\u53ef\u4ee5\u5237\u65b0\u89c6\u56fe\u7684\u4e00\u90e8\u5206\u81f3\u78c1\u76d8\u3002\u5f53\u51fd\u6570\u8fd4\u56de\u540e\uff0c\u5237\u65b0\u8fdb\u7a0b\u542f\u52a8\uff0c\u4f46\u662f\u4e0d\u4fdd\u8bc1\u6240\u6709\u6570\u636e\u90fd\u5199\u5165\u4e86\u78c1\u76d8\uff1a<\/p>\n<div>\n<div class=\"dp-highlighter bg_cpp\">\n<div class=\"bar\">\n<div class=\"tools\"><strong>[cpp]<\/strong>\u00a0<a class=\"ViewSource\" title=\"view plain\" href=\"http:\/\/blog.csdn.net\/great3779\/article\/details\/7226388\">view plain<\/a><span class=\"tracking-ad\" data-mod=\"popu_168\">\u00a0<a class=\"CopyToClipboard\" title=\"copy\" href=\"http:\/\/blog.csdn.net\/great3779\/article\/details\/7226388\" target=\"_blank\" rel=\"noopener\">copy<\/a><\/span><\/div>\n<\/div>\n<ol class=\"dp-cpp\" start=\"1\">\n<li class=\"alt\"><span class=\"comment\">\/\/Flush\u00a0the\u00a0whole\u00a0region\u00a0\u00a0<\/span><\/li>\n<li>region.flush();<\/li>\n<li class=\"alt\"><\/li>\n<li><span class=\"comment\">\/\/Flush\u00a0from\u00a0an\u00a0offset\u00a0until\u00a0the\u00a0end\u00a0of\u00a0the\u00a0region\u00a0\u00a0<\/span><\/li>\n<li class=\"alt\">region.flush(offset);<\/li>\n<li><\/li>\n<li class=\"alt\"><span class=\"comment\">\/\/Flush\u00a0a\u00a0memory\u00a0range\u00a0starting\u00a0on\u00a0an\u00a0offset\u00a0\u00a0<\/span><\/li>\n<li>region.flush(offset,\u00a0size);<\/li>\n<\/ol>\n<\/div>\n<\/div>\n<p align=\"left\">\u8bb0\u4f4f\u504f\u79fb\u91cf<strong>\u4e0d\u662f<\/strong>\u6587\u4ef6\u4e0a\u7684\u504f\u79fb\u91cf\uff0c\u800c\u662f\u6620\u5c04\u533a\u57df\u7684\u504f\u79fb\u91cf\u3002\u5982\u679c\u4e00\u4e2a\u533a\u57df\u8986\u76d6\u4e86\u4e00\u4e2a\u6587\u4ef6\u7684\u4e0b\u534a\u90e8\u5206\u5e76\u4e14\u5237\u65b0\u4e86\u6574\u4e2a\u533a\u57df\uff0c\u4ec5\u6587\u4ef6\u7684\u8fd9\u4e00\u534a\u80fd\u4fdd\u8bc1\u88ab\u5237\u65b0\u4e86\u3002<\/p>\n<p align=\"left\">\u66f4\u591a\u5173\u4e8emapped_region\u7684\u8be6\u60c5\uff0c\u53ef\u53c2\u8003\u00a0<a title=\"Class mapped_region\" href=\"http:\/\/www.boost.org\/doc\/libs\/1_49_0_beta1\/doc\/html\/boost\/interprocess\/mapped_region.html\">boost::interprocess::mapped_region<\/a>\u3002<\/p>\n<p align=\"left\">\n<h3><a name=\"t19\"><\/a><a name=\"\u4e00\u4e2a\u7b80\u5355\u7684\u4f8b\u5b50_\u5185\u5b58\u6620\u5c04\u6587\u4ef6\"><\/a><a name=\"_Toc315882211\"><\/a>\u4e00\u4e2a\u7b80\u5355\u7684\u4f8b\u5b50<\/h3>\n<p align=\"left\">\u6211\u4eec\u8d4b\u503c\u5728\u5171\u4eab\u5185\u5b58\u7ae0\u8282\u4e2d\u63d0\u5230\u7684\u4f8b\u5b50\uff0c\u4f7f\u7528\u5185\u5b58\u6620\u5c04\u6587\u4ef6\u3002\u4e00\u4e2a\u670d\u52a1\u7aef\u8fdb\u7a0b\u521b\u5efa\u4e86\u4e00\u4e2a\u5185\u5b58\u6620\u5c04\u6587\u4ef6\u5e76\u4e14\u521d\u59cb\u5316\u6240\u6709\u5b57\u8282\u81f3\u540c\u4e00\u4e2a\u503c\u3002\u4e4b\u540e\uff0c\u5ba2\u6237\u7aef\u8fdb\u7a0b\u6253\u5f00\u5185\u5b58\u6620\u5c04\u6587\u4ef6\u5e76\u4e14\u68c0\u67e5\u6570\u636e\u662f\u4e0d\u662f\u88ab\u6b63\u786e\u7684\u521d\u59cb\u5316\u4e86\u3002\uff08\u8bd1\u6ce8\uff1a\u539f\u6587\u6b64\u5904\u8bef\u4e3a\u201c\u5171\u4eab\u5185\u5b58\u201d\uff09<\/p>\n<div>\n<div class=\"dp-highlighter bg_cpp\">\n<div class=\"bar\">\n<div class=\"tools\"><strong>[cpp]<\/strong>\u00a0<a class=\"ViewSource\" title=\"view plain\" href=\"http:\/\/blog.csdn.net\/great3779\/article\/details\/7226388\">view plain<\/a><span class=\"tracking-ad\" data-mod=\"popu_168\">\u00a0<a class=\"CopyToClipboard\" title=\"copy\" href=\"http:\/\/blog.csdn.net\/great3779\/article\/details\/7226388\" target=\"_blank\" rel=\"noopener\">copy<\/a><\/span><\/div>\n<\/div>\n<ol class=\"dp-cpp\" start=\"1\">\n<li class=\"alt\"><span class=\"preprocessor\">#include\u00a0&lt;boost\/interprocess\/file_mapping.hpp&gt;\u00a0\u00a0<\/span><\/li>\n<li><span class=\"preprocessor\">#include\u00a0&lt;boost\/interprocess\/mapped_region.hpp&gt;\u00a0\u00a0<\/span><\/li>\n<li class=\"alt\"><span class=\"preprocessor\">#include\u00a0&lt;iostream&gt;\u00a0\u00a0<\/span><\/li>\n<li><span class=\"preprocessor\">#include\u00a0&lt;fstream&gt;\u00a0\u00a0<\/span><\/li>\n<li class=\"alt\"><span class=\"preprocessor\">#include\u00a0&lt;string&gt;\u00a0\u00a0<\/span><\/li>\n<li><span class=\"preprocessor\">#include\u00a0&lt;vector&gt;\u00a0\u00a0<\/span><\/li>\n<li class=\"alt\"><span class=\"preprocessor\">#include\u00a0&lt;cstring&gt;\u00a0\u00a0<\/span><\/li>\n<li><span class=\"preprocessor\">#include\u00a0&lt;cstddef&gt;\u00a0\u00a0<\/span><\/li>\n<li class=\"alt\"><span class=\"preprocessor\">#include\u00a0&lt;cstdlib&gt;\u00a0\u00a0<\/span><\/li>\n<li><\/li>\n<li class=\"alt\"><span class=\"datatypes\">int\u00a0main(int\u00a0argc,\u00a0char\u00a0*argv[])\u00a0\u00a0<\/span><\/li>\n<li>{<\/li>\n<li class=\"alt\">\u00a0\u00a0\u00a0<span class=\"keyword\">using\u00a0namespace\u00a0boost::interprocess;\u00a0\u00a0<\/span><\/li>\n<li><\/li>\n<li class=\"alt\">\u00a0\u00a0\u00a0<span class=\"comment\">\/\/Define\u00a0file\u00a0names\u00a0\u00a0<\/span><\/li>\n<li>\u00a0\u00a0\u00a0<span class=\"keyword\">const\u00a0<span class=\"datatypes\">char\u00a0*FileName\u00a0\u00a0=\u00a0<span class=\"string\">&#8220;file.bin&#8221;;\u00a0\u00a0<\/span><\/span><\/span><\/li>\n<li class=\"alt\">\u00a0\u00a0\u00a0<span class=\"keyword\">const\u00a0std::<span class=\"datatypes\">size_t\u00a0FileSize\u00a0=\u00a010000;\u00a0\u00a0<\/span><\/span><\/li>\n<li><\/li>\n<li class=\"alt\">\u00a0\u00a0\u00a0<span class=\"keyword\">if(argc\u00a0==\u00a01){\u00a0<span class=\"comment\">\/\/Parent\u00a0process\u00a0executes\u00a0this\u00a0\u00a0<\/span><\/span><\/li>\n<li>\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0{\u00a0\u00a0<span class=\"comment\">\/\/Create\u00a0a\u00a0file\u00a0\u00a0<\/span><\/li>\n<li class=\"alt\">\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0file_mapping::remove(FileName);<\/li>\n<li>\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0std::filebuf\u00a0fbuf;<\/li>\n<li class=\"alt\">\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0fbuf.open(FileName,\u00a0std::ios_base::in\u00a0|\u00a0std::ios_base::out<\/li>\n<li>\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0|\u00a0std::ios_base::trunc\u00a0|\u00a0std::ios_base::binary);<\/li>\n<li class=\"alt\">\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0<span class=\"comment\">\/\/Set\u00a0the\u00a0size\u00a0\u00a0<\/span><\/li>\n<li>\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0fbuf.pubseekoff(FileSize-1,\u00a0std::ios_base::beg);<\/li>\n<li class=\"alt\">\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0fbuf.sputc(0);<\/li>\n<li>\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0}<\/li>\n<li class=\"alt\"><\/li>\n<li>\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0<span class=\"comment\">\/\/Remove\u00a0on\u00a0exit\u00a0\u00a0<\/span><\/li>\n<li class=\"alt\">\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0<span class=\"keyword\">struct\u00a0file_remove\u00a0\u00a0<\/span><\/li>\n<li>\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0{<\/li>\n<li class=\"alt\">\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0file_remove(<span class=\"keyword\">const\u00a0<span class=\"datatypes\">char\u00a0*FileName)\u00a0\u00a0<\/span><\/span><\/li>\n<li>\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0:\u00a0FileName_(FileName)\u00a0{}<\/li>\n<li class=\"alt\">\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0~file_remove(){\u00a0file_mapping::remove(FileName_);\u00a0}<\/li>\n<li>\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0<span class=\"keyword\">const\u00a0<span class=\"datatypes\">char\u00a0*FileName_;\u00a0\u00a0<\/span><\/span><\/li>\n<li class=\"alt\">\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0}\u00a0remover(FileName);<\/li>\n<li><\/li>\n<li class=\"alt\">\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0<span class=\"comment\">\/\/Create\u00a0a\u00a0file\u00a0mapping\u00a0\u00a0<\/span><\/li>\n<li>\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0file_mapping\u00a0m_file(FileName,\u00a0read_write);<\/li>\n<li class=\"alt\"><\/li>\n<li>\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0<span class=\"comment\">\/\/Map\u00a0the\u00a0whole\u00a0file\u00a0with\u00a0read-write\u00a0permissions\u00a0in\u00a0this\u00a0process\u00a0\u00a0<\/span><\/li>\n<li class=\"alt\">\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0mapped_region\u00a0region(m_file,\u00a0read_write);<\/li>\n<li><\/li>\n<li class=\"alt\">\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0<span class=\"comment\">\/\/Get\u00a0the\u00a0address\u00a0of\u00a0the\u00a0mapped\u00a0region\u00a0\u00a0<\/span><\/li>\n<li>\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0<span class=\"keyword\">void\u00a0*\u00a0addr\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0=\u00a0region.get_address();\u00a0\u00a0<\/span><\/li>\n<li class=\"alt\">\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0std::<span class=\"datatypes\">size_t\u00a0size\u00a0\u00a0=\u00a0region.get_size();\u00a0\u00a0<\/span><\/li>\n<li><\/li>\n<li class=\"alt\">\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0<span class=\"comment\">\/\/Write\u00a0all\u00a0the\u00a0memory\u00a0to\u00a01\u00a0\u00a0<\/span><\/li>\n<li>\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0std::memset(addr,\u00a01,\u00a0size);<\/li>\n<li class=\"alt\"><\/li>\n<li>\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0<span class=\"comment\">\/\/Launch\u00a0child\u00a0process\u00a0\u00a0<\/span><\/li>\n<li class=\"alt\">\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0std::string\u00a0s(argv[0]);\u00a0s\u00a0+=\u00a0<span class=\"string\">&#8221;\u00a0child\u00a0&#8220;;\u00a0\u00a0<\/span><\/li>\n<li>\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0<span class=\"keyword\">if(0\u00a0!=\u00a0std::system(s.c_str()))\u00a0\u00a0<\/span><\/li>\n<li class=\"alt\">\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0<span class=\"keyword\">return\u00a01;\u00a0\u00a0<\/span><\/li>\n<li>\u00a0\u00a0\u00a0}<\/li>\n<li class=\"alt\">\u00a0\u00a0\u00a0<span class=\"keyword\">else{\u00a0\u00a0<span class=\"comment\">\/\/Child\u00a0process\u00a0executes\u00a0this\u00a0\u00a0<\/span><\/span><\/li>\n<li>\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0{\u00a0\u00a0<span class=\"comment\">\/\/Open\u00a0the\u00a0file\u00a0mapping\u00a0and\u00a0map\u00a0it\u00a0as\u00a0read-only\u00a0\u00a0<\/span><\/li>\n<li class=\"alt\">\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0file_mapping\u00a0m_file(FileName,\u00a0read_only);<\/li>\n<li><\/li>\n<li class=\"alt\">\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0mapped_region\u00a0region(m_file,\u00a0read_only);<\/li>\n<li><\/li>\n<li class=\"alt\">\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0<span class=\"comment\">\/\/Get\u00a0the\u00a0address\u00a0of\u00a0the\u00a0mapped\u00a0region\u00a0\u00a0<\/span><\/li>\n<li>\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0<span class=\"keyword\">void\u00a0*\u00a0addr\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0=\u00a0region.get_address();\u00a0\u00a0<\/span><\/li>\n<li class=\"alt\">\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0std::<span class=\"datatypes\">size_t\u00a0size\u00a0\u00a0=\u00a0region.get_size();\u00a0\u00a0<\/span><\/li>\n<li><\/li>\n<li class=\"alt\">\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0<span class=\"comment\">\/\/Check\u00a0that\u00a0memory\u00a0was\u00a0initialized\u00a0to\u00a01\u00a0\u00a0<\/span><\/li>\n<li>\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0<span class=\"keyword\">const\u00a0<span class=\"datatypes\">char\u00a0*mem\u00a0=\u00a0static_cast&lt;char*&gt;(addr);\u00a0\u00a0<\/span><\/span><\/li>\n<li class=\"alt\">\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0<span class=\"keyword\">for(std::<span class=\"datatypes\">size_t\u00a0i\u00a0=\u00a00;\u00a0i\u00a0&lt;\u00a0size;\u00a0++i)\u00a0\u00a0<\/span><\/span><\/li>\n<li>\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0<span class=\"keyword\">if(*mem++\u00a0!=\u00a01)\u00a0\u00a0<\/span><\/li>\n<li class=\"alt\">\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0<span class=\"keyword\">return\u00a01;\u00a0\u00a0\u00a0<span class=\"comment\">\/\/Error\u00a0checking\u00a0memory\u00a0\u00a0<\/span><\/span><\/li>\n<li>\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0}<\/li>\n<li class=\"alt\">\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0{\u00a0\u00a0<span class=\"comment\">\/\/Now\u00a0test\u00a0it\u00a0reading\u00a0the\u00a0file\u00a0\u00a0<\/span><\/li>\n<li>\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0std::filebuf\u00a0fbuf;<\/li>\n<li class=\"alt\">\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0fbuf.open(FileName,\u00a0std::ios_base::in\u00a0|\u00a0std::ios_base::binary);<\/li>\n<li><\/li>\n<li class=\"alt\">\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0<span class=\"comment\">\/\/Read\u00a0it\u00a0to\u00a0memory\u00a0\u00a0<\/span><\/li>\n<li>\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0std::vector&lt;<span class=\"datatypes\">char&gt;\u00a0vect(FileSize,\u00a00);\u00a0\u00a0<\/span><\/li>\n<li class=\"alt\">\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0fbuf.sgetn(&amp;vect[0],\u00a0std::streamsize(vect.size()));<\/li>\n<li><\/li>\n<li class=\"alt\">\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0<span class=\"comment\">\/\/Check\u00a0that\u00a0memory\u00a0was\u00a0initialized\u00a0to\u00a01\u00a0\u00a0<\/span><\/li>\n<li>\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0<span class=\"keyword\">const\u00a0<span class=\"datatypes\">char\u00a0*mem\u00a0=\u00a0static_cast&lt;char*&gt;(&amp;vect[0]);\u00a0\u00a0<\/span><\/span><\/li>\n<li class=\"alt\">\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0<span class=\"keyword\">for(std::<span class=\"datatypes\">size_t\u00a0i\u00a0=\u00a00;\u00a0i\u00a0&lt;\u00a0FileSize;\u00a0++i)\u00a0\u00a0<\/span><\/span><\/li>\n<li>\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0<span class=\"keyword\">if(*mem++\u00a0!=\u00a01)\u00a0\u00a0<\/span><\/li>\n<li class=\"alt\">\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0<span class=\"keyword\">return\u00a01;\u00a0\u00a0\u00a0<span class=\"comment\">\/\/Error\u00a0checking\u00a0memory\u00a0\u00a0<\/span><\/span><\/li>\n<li>\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0}<\/li>\n<li class=\"alt\">\u00a0\u00a0\u00a0}<\/li>\n<li><\/li>\n<li class=\"alt\">\u00a0\u00a0\u00a0<span class=\"keyword\">return\u00a00;\u00a0\u00a0<\/span><\/li>\n<li>}<\/li>\n<\/ol>\n<\/div>\n<\/div>\n<p align=\"left\"><strong>\u00a0<\/strong><\/p>\n<h2><a name=\"t20\"><\/a><a name=\"\u66f4\u591a\u5173\u4e8e\u6620\u5c04\u533a\u57df\"><\/a><a name=\"_Toc315882212\"><\/a>\u66f4\u591a\u5173\u4e8e\u6620\u5c04\u533a\u57df<\/h2>\n<p><strong>\u00a0<\/strong><\/p>\n<h3><a name=\"t21\"><\/a><a name=\"\u4e00\u4e2a\u64cd\u4f5c\u5b83\u4eec\u7684\u7c7b\"><\/a><a name=\"_Toc315882213\"><\/a>\u4e00\u4e2a\u64cd\u4f5c\u5b83\u4eec\u7684\u7c7b<\/h3>\n<p align=\"left\">\u5982\u6211\u4eec\u6240\u89c1\uff0cshared_memory_object\u548cfile_mapping\u00a0objects\u90fd\u80fd\u88ab\u7528\u4e8e\u521b\u5efamapped_region\u5bf9\u8c61\u3002\u4f7f\u7528\u76f8\u540c\u7684\u7c7b\u4ece\u5171\u4eab\u5185\u5b58\u5bf9\u8c61\u6216\u6587\u4ef6\u6620\u5c04\u521b\u5efa\u6620\u5c04\u533a\u57df\uff0c\u8fd9\u6837\u6709\u8bb8\u591a\u4f18\u70b9\u3002<\/p>\n<p align=\"left\">\u4f8b\u5982\uff0c\u53ef\u4ee5\u5728STL\u5bb9\u5668\u6620\u5c04\u533a\u57df\u6df7\u5408\u4f7f\u7528\u5171\u4eab\u5185\u5b58\u548c\u5185\u5b58\u6620\u5c04\u6587\u4ef6\u3002\u4ec5\u4f9d\u8d56\u4e8e\u6620\u5c04\u533a\u57df\u7684\u5e93\u80fd\u591f\u4e0e\u5171\u4eab\u5185\u5b58\u6216\u5185\u5b58\u6620\u5c04\u6587\u4ef6\u4e00\u8d77\u4f7f\u7528\uff0c\u800c\u4e0d\u9700\u8981\u91cd\u65b0\u7f16\u8bd1\u5b83\u4eec\u3002<\/p>\n<p align=\"left\">\n<h3><a name=\"t22\"><\/a><a name=\"\u5728\u6570\u4e2a\u8fdb\u7a0b\u4e2d\u7684\u6620\u5c04\u5730\u5740\"><\/a><a name=\"_Toc315882214\"><\/a>\u5728\u6570\u4e2a\u8fdb\u7a0b\u4e2d\u7684\u6620\u5c04\u5730\u5740<\/h3>\n<p align=\"left\">\u5728\u6211\u4eec\u5df2\u7ecf\u770b\u5230\u7684\u4f8b\u5b50\u4e2d\uff0c\u6587\u4ef6\u6216\u662f\u5171\u4eab\u5185\u5b58\u5185\u5bb9\u88ab\u6620\u5c04\u5230\u8fdb\u7a0b\u7684\u5730\u5740\u7a7a\u95f4\u4e0a\uff0c\u4f46\u662f\u5730\u5740\u662f\u7531\u64cd\u4f5c\u7cfb\u7edf\u9009\u62e9\u7684\u3002<\/p>\n<p align=\"left\">\u5982\u679c\u591a\u4e2a\u8fdb\u7a0b\u6620\u5c04\u540c\u4e00\u4e2a\u6587\u4ef6\u6216\u5171\u4eab\u5185\u5b58\uff0c\u6620\u5c04\u5730\u5740\u5728\u6bcf\u4e2a\u8fdb\u7a0b\u4e2d\u80af\u5b9a\u662f\u4e0d\u540c\u7684\u3002\u56e0\u4e3a\u6bcf\u4e2a\u8fdb\u7a0b\u90fd\u53ef\u80fd\u5728\u4e0d\u540c\u7684\u65b9\u9762\u4f7f\u7528\u5230\u4e86\u5b83\u4eec\u7684\u5730\u5740\u7a7a\u95f4\uff08\u4f8b\u5982\uff0c\u6216\u591a\u6216\u5c11\u5206\u914d\u4e00\u4e9b\u52a8\u6001\u5185\u5b58\uff09\uff0c\u56e0\u6b64\u4e0d\u4fdd\u8bc1\u6587\u4ef6\/\u5171\u4eab\u5185\u5b58\u4f1a\u6620\u5c04\u5230\u76f8\u540c\u7684\u5730\u5740\u4e0a\u3002<\/p>\n<p align=\"left\">\u5982\u679c\u4e24\u4e2a\u8fdb\u7a0b\u6620\u5c04\u540c\u4e00\u4e2a\u5bf9\u8c61\u5230\u4e0d\u540c\u7684\u5730\u5740\u4e0a\uff0c\u5219\u5728\u90a3\u5757\u5185\u5b58\u4e0a\u4f7f\u7528\u6307\u9488\u662f\u65e0\u6548\u7684\uff0c\u56e0\u4e3a\u6307\u9488\uff08\u4e00\u4e2a\u7edd\u5bf9\u5730\u5740\uff09\u4ec5\u5bf9\u5199\u5b83\u7684\u8fdb\u7a0b\u6709\u610f\u4e49\u3002\u89e3\u51b3\u8fd9\u4e2a\u95ee\u9898\u7684\u65b9\u5f0f\u662f\u4f7f\u7528\u5bf9\u8c61\u95f4\u7684\u504f\u79fb\u91cf\uff08\u8ddd\u79bb\uff09\u800c\u4e0d\u662f\u6307\u9488\uff1a\u5982\u679c\u4e24\u4e2a\u5bf9\u8c61\u7531\u540c\u4e00\u8fdb\u7a0b\u4f4d\u4e8e\u540c\u6837\u5171\u4eab\u5185\u5b58\u7247\u6bb5\uff0c\u5728\u53e6\u4e00\u4e2a\u8fdb\u7a0b\u4e2d\uff0c<strong>\u5404\u5bf9\u8c61\u7684\u5730\u5740\u53ef\u80fd\u662f\u4e0d\u540c\u7684<\/strong>\uff0c\u4f46\u662f<strong>\u4ed6\u4eec\u4e4b\u95f4\u7684\u8ddd\u79bb\uff08\u5b57\u8282\u6570\uff09\u662f\u76f8\u540c\u7684<\/strong>\u3002<\/p>\n<p align=\"left\">\u6240\u4ee5\uff0c\u5bf9\u6620\u5c04\u5171\u4eab\u5185\u5b58\u6216\u5185\u5b58\u6620\u5c04\u6587\u4ef6\u7684\u7b2c\u4e00\u4e2a\u5efa\u8bae\u5c31\u662f\u907f\u514d\u4f7f\u7528\u539f\u59cb\u6307\u9488\uff0c\u9664\u975e\u4f60\u4e86\u89e3\u4f60\u505a\u7684\u4e00\u5207\u3002\u5f53\u4e00\u4e2a\u7f6e\u4e8e\u6620\u5c04\u533a\u57df\u7684\u5bf9\u8c61\u60f3\u6307\u5411\u7f6e\u4e8e\u76f8\u540c\u6620\u5c04\u533a\u57df\u7684\u53e6\u4e00\u4e2a\u5bf9\u8c61\u65f6\uff0c\u4f7f\u7528\u6570\u636e\u6216\u76f8\u5bf9\u6307\u9488\u95f4\u7684\u504f\u79fb\u91cf\u6765\u5f97\u5230\u6307\u9488\u7684\u529f\u80fd\u3002Boost.Interprocess\u63d0\u4f9b\u4e86\u4e00\u4e2a\u540d\u4e3a<a title=\"Class template offset_ptr\" href=\"http:\/\/www.boost.org\/doc\/libs\/1_49_0_beta1\/doc\/html\/boost\/interprocess\/offset_ptr.html\">boost::interprocess::offset_ptr<\/a>\u00a0\u7684\u667a\u80fd\u6307\u9488\uff0c\u5b83\u80fd\u5b89\u5168\u662f\u4f7f\u7528\u5728\u5171\u4eab\u5185\u5b58\u4e2d\uff0c\u5e76\u4e14\u80fd\u7528\u4e8e\u6307\u5411\u53e6\u4e00\u4e2a\u7f6e\u4e8e\u540c\u4e00\u5171\u4eab\u5185\u5b58\/\u5185\u5b58\u6620\u5c04\u6587\u4ef6\u4e2d\u7684\u5bf9\u8c61\u3002<\/p>\n<p align=\"left\">\n<h3><a name=\"t23\"><\/a><a name=\"\u56fa\u5b9a\u5730\u5740\u6620\u5c04\"><\/a><a name=\"_Toc315882215\"><\/a>\u56fa\u5b9a\u5730\u5740\u6620\u5c04<\/h3>\n<p align=\"left\">\u4f7f\u7528\u76f8\u5bf9\u6307\u9488\u6ca1\u6709\u4f7f\u7528\u539f\u59cb\u6307\u9488\u65b9\u4fbf\uff0c\u56e0\u6b64\u5982\u679c\u4e00\u4e2a\u4f7f\u7528\u8005\u80fd\u591f\u6210\u529f\u5c06\u540c\u6837\u7684\u6587\u4ef6\u6216\u5171\u4eab\u5185\u5b58\u5bf9\u8c61\u6620\u5c04\u81f3\u4e24\u4e2a\u8fdb\u7a0b\u7684\u76f8\u540c\u5730\u5740\uff0c\u4f7f\u7528\u539f\u59cb\u6307\u9488\u5c31\u662f\u4e2a\u597d\u4e3b\u610f\u4e86\u3002<\/p>\n<p align=\"left\">\u4e3a\u4e86\u6620\u5c04\u4e00\u4e2a\u5bf9\u8c61\u81f3\u56fa\u5b9a\u5730\u5740\uff0c\u4f7f\u7528\u8005\u53ef\u4ee5\u5728\u6620\u5c04\u533a\u57df\u7684\u6784\u9020\u51fd\u6570\u4e2d\u6307\u5b9a\u5730\u5740\uff1a<\/p>\n<div>\n<div class=\"dp-highlighter bg_cpp\">\n<div class=\"bar\">\n<div class=\"tools\"><strong>[cpp]<\/strong>\u00a0<a class=\"ViewSource\" title=\"view plain\" href=\"http:\/\/blog.csdn.net\/great3779\/article\/details\/7226388\">view plain<\/a><span class=\"tracking-ad\" data-mod=\"popu_168\">\u00a0<a class=\"CopyToClipboard\" title=\"copy\" href=\"http:\/\/blog.csdn.net\/great3779\/article\/details\/7226388\" target=\"_blank\" rel=\"noopener\">copy<\/a><\/span><\/div>\n<\/div>\n<ol class=\"dp-cpp\" start=\"1\">\n<li class=\"alt\">mapped_region\u00a0region\u00a0(\u00a0shm\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0<span class=\"comment\">\/\/Map\u00a0shared\u00a0memory\u00a0\u00a0<\/span><\/li>\n<li>\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0,\u00a0read_write\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0<span class=\"comment\">\/\/Map\u00a0it\u00a0as\u00a0read-write\u00a0\u00a0<\/span><\/li>\n<li class=\"alt\">\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0,\u00a00\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0<span class=\"comment\">\/\/Map\u00a0from\u00a0offset\u00a00\u00a0\u00a0<\/span><\/li>\n<li>\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0,\u00a00\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0<span class=\"comment\">\/\/Map\u00a0until\u00a0the\u00a0end\u00a0\u00a0<\/span><\/li>\n<li class=\"alt\">\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0,\u00a0(<span class=\"keyword\">void*)0x3F000000\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0<span class=\"comment\">\/\/Map\u00a0it\u00a0exactly\u00a0there\u00a0\u00a0<\/span><\/span><\/li>\n<li>\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0);<\/li>\n<\/ol>\n<\/div>\n<\/div>\n<p align=\"left\">\u7136\u800c\uff0c\u7528\u6237\u4e0d\u80fd\u5728\u4efb\u4f55\u5730\u5740\u4e0a\u6620\u5c04\u8fd9\u4e2a\u533a\u57df\uff0c\u5373\u4f7f\u5730\u5740\u672a\u88ab\u4f7f\u7528\u3002\u6807\u8bb0\u6620\u5c04\u533a\u57df\u8d77\u70b9\u7684\u504f\u79fb\u53c2\u6570\u4e5f\u662f\u88ab\u9650\u5236\u7684\u3002\u8fd9\u4e9b\u9650\u5236\u5c06\u5728\u4e0b\u4e00\u7ae0\u8282\u89e3\u91ca\u3002<\/p>\n<p align=\"left\">\n<h3><a name=\"t24\"><\/a><a name=\"\u6620\u5c04\u504f\u79fb\u548c\u5730\u5740\u9650\u5236\"><\/a><a name=\"_Toc315882216\"><\/a>\u6620\u5c04\u504f\u79fb\u548c\u5730\u5740\u9650\u5236<\/h3>\n<p align=\"left\">\u5982\u4e0a\u8ff0\uff0c\u4f7f\u7528\u8005\u4e0d\u80fd\u6620\u5c04\u53ef\u5185\u5b58\u6620\u5c04\u7684\u5bf9\u8c61\u81f3\u4efb\u4f55\u5730\u5740\u4e0a\uff0c\u4f46\u53ef\u4ee5\u6307\u5b9a\u53ef\u6620\u5c04\u5bf9\u8c61\u7684\u504f\u79fb\u91cf\u4e3a\u4efb\u610f\u503c\uff0c\u6b64\u53ef\u6620\u5c04\u5bf9\u8c61\u7b49\u540c\u4e8e\u6620\u5c04\u533a\u57df\u7684\u8d77\u70b9\u3002\u5927\u591a\u6570\u64cd\u4f5c\u7cfb\u7edf\u9650\u5236\u6620\u5c04\u5730\u5740\u548c\u53ef\u6620\u5c04\u5bf9\u8c61\u7684\u504f\u79fb\u91cf\u503c\u4e3a\u9875\u9762\u5927\u5c0f\u7684\u500d\u6570\u3002\u8fd9\u6e90\u4e8e\u64cd\u4f5c\u7cfb\u7edf\u5728\u6574\u4e2a\u9875\u9762\u4e0a\u6267\u884c\u6620\u5c04\u64cd\u4f5c\u7684\u4e8b\u5b9e\u3002<\/p>\n<p align=\"left\">\u5982\u679c\u4f7f\u7528\u4e86\u56fa\u5b9a\u7684\u6620\u5c04\u5730\u5740\uff0c\u53c2\u6570<em>offset<\/em>\u00a0\u548c<em>address<\/em>\u5fc5\u987b\u4e3a\u90a3\u4e2a\u503c\u7684\u6574\u6570\u500d\u3002\u572832\u4f4d\u64cd\u4f5c\u7cfb\u7edf\u4e2d\uff0c\u8fd9\u4e2a\u503c\u4e00\u822c\u4e3a4KB\u62168KB\u3002<\/p>\n<div>\n<div class=\"dp-highlighter bg_cpp\">\n<div class=\"bar\">\n<div class=\"tools\"><strong>[cpp]<\/strong>\u00a0<a class=\"ViewSource\" title=\"view plain\" href=\"http:\/\/blog.csdn.net\/great3779\/article\/details\/7226388\">view plain<\/a><span class=\"tracking-ad\" data-mod=\"popu_168\">\u00a0<a class=\"CopyToClipboard\" title=\"copy\" href=\"http:\/\/blog.csdn.net\/great3779\/article\/details\/7226388\" target=\"_blank\" rel=\"noopener\">copy<\/a><\/span><\/div>\n<\/div>\n<ol class=\"dp-cpp\" start=\"1\">\n<li class=\"alt\"><span class=\"comment\">\/\/These\u00a0might\u00a0fail\u00a0because\u00a0the\u00a0offset\u00a0is\u00a0not\u00a0a\u00a0multiple\u00a0of\u00a0the\u00a0page\u00a0size\u00a0\u00a0<\/span><\/li>\n<li><span class=\"comment\">\/\/and\u00a0we\u00a0are\u00a0using\u00a0fixed\u00a0address\u00a0mapping\u00a0\u00a0<\/span><\/li>\n<li class=\"alt\">mapped_region\u00a0region1(\u00a0shm\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0<span class=\"comment\">\/\/Map\u00a0shared\u00a0memory\u00a0\u00a0<\/span><\/li>\n<li>\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0,\u00a0read_write\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0<span class=\"comment\">\/\/Map\u00a0it\u00a0as\u00a0read-write\u00a0\u00a0<\/span><\/li>\n<li class=\"alt\">\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0,\u00a01\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0<span class=\"comment\">\/\/Map\u00a0from\u00a0offset\u00a01\u00a0\u00a0<\/span><\/li>\n<li>\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0,\u00a01\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0<span class=\"comment\">\/\/Map\u00a01\u00a0byte\u00a0\u00a0<\/span><\/li>\n<li class=\"alt\">\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0,\u00a0(<span class=\"keyword\">void*)0x3F000000\u00a0\u00a0\u00a0\u00a0\u00a0<span class=\"comment\">\/\/Aligned\u00a0mapping\u00a0address\u00a0\u00a0<\/span><\/span><\/li>\n<li>\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0);<\/li>\n<li class=\"alt\"><\/li>\n<li><span class=\"comment\">\/\/These\u00a0might\u00a0fail\u00a0because\u00a0the\u00a0address\u00a0is\u00a0not\u00a0a\u00a0multiple\u00a0of\u00a0the\u00a0page\u00a0size\u00a0\u00a0<\/span><\/li>\n<li class=\"alt\">mapped_region\u00a0region2(\u00a0shm\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0<span class=\"comment\">\/\/Map\u00a0shared\u00a0memory\u00a0\u00a0<\/span><\/li>\n<li>\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0,\u00a0read_write\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0<span class=\"comment\">\/\/Map\u00a0it\u00a0as\u00a0read-write\u00a0\u00a0<\/span><\/li>\n<li class=\"alt\">\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0,\u00a00\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0<span class=\"comment\">\/\/Map\u00a0from\u00a0offset\u00a00\u00a0\u00a0<\/span><\/li>\n<li>\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0,\u00a01\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0<span class=\"comment\">\/\/Map\u00a01\u00a0byte\u00a0\u00a0<\/span><\/li>\n<li class=\"alt\">\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0,\u00a0(<span class=\"keyword\">void*)0x3F000001\u00a0\u00a0\u00a0\u00a0\u00a0<span class=\"comment\">\/\/Not\u00a0aligned\u00a0mapping\u00a0address\u00a0\u00a0<\/span><\/span><\/li>\n<li>\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0);<\/li>\n<\/ol>\n<\/div>\n<\/div>\n<p align=\"left\">\u56e0\u4e3a\u64cd\u4f5c\u7cfb\u7edf\u5728\u6574\u4e2a\u9875\u9762\u4e0a\u8fdb\u884c\u6620\u5c04\u64cd\u4f5c\uff0c\u56e0\u6b64\u6307\u5b9a\u4e00\u4e2a\u4e0d\u662f\u9875\u9762\u5927\u5c0f\u6574\u6570\u500d\u7684\u6620\u5c04\u5927\u5c0f\u6216\u504f\u79fb\u91cf\u4f1a\u6d6a\u8d39\u66f4\u591a\u7684\u8d44\u6e90\u3002\u5982\u679c\u4f7f\u7528\u8005\u6307\u5b9a\u4e86\u5982\u4e0b1\u5b57\u8282\u6620\u5c04\uff1a<\/p>\n<div>\n<div class=\"dp-highlighter bg_cpp\">\n<div class=\"bar\">\n<div class=\"tools\"><strong>[cpp]<\/strong>\u00a0<a class=\"ViewSource\" title=\"view plain\" href=\"http:\/\/blog.csdn.net\/great3779\/article\/details\/7226388\">view plain<\/a><span class=\"tracking-ad\" data-mod=\"popu_168\">\u00a0<a class=\"CopyToClipboard\" title=\"copy\" href=\"http:\/\/blog.csdn.net\/great3779\/article\/details\/7226388\" target=\"_blank\" rel=\"noopener\">copy<\/a><\/span><\/div>\n<\/div>\n<ol class=\"dp-cpp\" start=\"1\">\n<li class=\"alt\"><span class=\"comment\">\/\/Map\u00a0one\u00a0byte\u00a0of\u00a0the\u00a0shared\u00a0memory\u00a0object.\u00a0\u00a0<\/span><\/li>\n<li><span class=\"comment\">\/\/A\u00a0whole\u00a0memory\u00a0page\u00a0will\u00a0be\u00a0used\u00a0for\u00a0this.\u00a0\u00a0<\/span><\/li>\n<li class=\"alt\">mapped_region\u00a0region\u00a0(\u00a0shm\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0<span class=\"comment\">\/\/Map\u00a0shared\u00a0memory\u00a0\u00a0<\/span><\/li>\n<li>\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0,\u00a0read_write\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0<span class=\"comment\">\/\/Map\u00a0it\u00a0as\u00a0read-write\u00a0\u00a0<\/span><\/li>\n<li class=\"alt\">\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0,\u00a00\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0<span class=\"comment\">\/\/Map\u00a0from\u00a0offset\u00a00\u00a0\u00a0<\/span><\/li>\n<li>\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0,\u00a01\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0<span class=\"comment\">\/\/Map\u00a01\u00a0byte\u00a0\u00a0<\/span><\/li>\n<li class=\"alt\">\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0);<\/li>\n<\/ol>\n<\/div>\n<\/div>\n<p align=\"left\">\u64cd\u4f5c\u7cfb\u7edf\u5c06\u4fdd\u7559\u4e00\u6574\u4e2a\u9875\u9762\uff0c\u5e76\u4e14\u6b64\u9875\u9762\u4e0d\u4f1a\u518d\u88ab\u5176\u5b83\u6620\u5c04\u4f7f\u7528\uff0c\u56e0\u6b64\u6211\u4eec\u5c06\u6d6a\u8d39\uff08\u9875\u9762\u5927\u5c0f &#8211; 1\uff09\u5b57\u8282\u3002\u5982\u679c\u6211\u4eec\u60f3\u6709\u6548\u5229\u7528\u7cfb\u7edf\u8d44\u6e90\uff0c\u6211\u4eec\u5e94\u8be5\u521b\u5efa\u6574\u6570\u500d\u4e8e\u9875\u9762\u5927\u5c0f\u7684\u533a\u57df\u3002\u5982\u679c\u4f7f\u7528\u8005\u4e3a\u4e00\u4e2a\u67092*\u9875\u9762\u5927\u5c0f\u7684\u6587\u4ef6\u6307\u5b9a\u4e86\u5982\u4e0b\u4e24\u4e2a\u6620\u5c04\u533a\u57df\uff1a<\/p>\n<div>\n<div class=\"dp-highlighter bg_cpp\">\n<div class=\"bar\">\n<div class=\"tools\"><strong>[cpp]<\/strong>\u00a0<a class=\"ViewSource\" title=\"view plain\" href=\"http:\/\/blog.csdn.net\/great3779\/article\/details\/7226388\">view plain<\/a><span class=\"tracking-ad\" data-mod=\"popu_168\">\u00a0<a class=\"CopyToClipboard\" title=\"copy\" href=\"http:\/\/blog.csdn.net\/great3779\/article\/details\/7226388\" target=\"_blank\" rel=\"noopener\">copy<\/a><\/span><\/div>\n<\/div>\n<ol class=\"dp-cpp\" start=\"1\">\n<li class=\"alt\"><span class=\"comment\">\/\/Map\u00a0the\u00a0first\u00a0quarter\u00a0of\u00a0the\u00a0file\u00a0\u00a0<\/span><\/li>\n<li><span class=\"comment\">\/\/This\u00a0will\u00a0use\u00a0a\u00a0whole\u00a0page\u00a0\u00a0<\/span><\/li>\n<li class=\"alt\">mapped_region\u00a0region1(\u00a0shm\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0<span class=\"comment\">\/\/Map\u00a0shared\u00a0memory\u00a0\u00a0<\/span><\/li>\n<li>\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0,\u00a0read_write\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0<span class=\"comment\">\/\/Map\u00a0it\u00a0as\u00a0read-write\u00a0\u00a0<\/span><\/li>\n<li class=\"alt\">\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0,\u00a00\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0<span class=\"comment\">\/\/Map\u00a0from\u00a0offset\u00a00\u00a0\u00a0<\/span><\/li>\n<li>\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0,\u00a0page_size\/2\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0<span class=\"comment\">\/\/Map\u00a0page_size\/2\u00a0bytes\u00a0\u00a0<\/span><\/li>\n<li class=\"alt\">\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0);<\/li>\n<li><\/li>\n<li class=\"alt\"><span class=\"comment\">\/\/Map\u00a0the\u00a0rest\u00a0of\u00a0the\u00a0file\u00a0\u00a0<\/span><\/li>\n<li><span class=\"comment\">\/\/This\u00a0will\u00a0use\u00a0a\u00a02\u00a0pages\u00a0\u00a0<\/span><\/li>\n<li class=\"alt\">mapped_region\u00a0region2(\u00a0shm\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0<span class=\"comment\">\/\/Map\u00a0shared\u00a0memory\u00a0\u00a0<\/span><\/li>\n<li>\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0,\u00a0read_write\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0<span class=\"comment\">\/\/Map\u00a0it\u00a0as\u00a0read-write\u00a0\u00a0<\/span><\/li>\n<li class=\"alt\">\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0,\u00a0page_size\/2\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0<span class=\"comment\">\/\/Map\u00a0from\u00a0offset\u00a00\u00a0\u00a0<\/span><\/li>\n<li>\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0,\u00a03*page_size\/2\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0<span class=\"comment\">\/\/Map\u00a0the\u00a0rest\u00a0of\u00a0the\u00a0shared\u00a0memory\u00a0\u00a0<\/span><\/li>\n<li class=\"alt\">\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0);<\/li>\n<\/ol>\n<\/div>\n<\/div>\n<p align=\"left\">\u6b64\u4f8b\u4e2d\uff0c\u9875\u9762\u7684\u4e00\u534a\u7a7a\u95f4\u6d6a\u8d39\u5728\u7b2c\u4e00\u4e2a\u6620\u5c04\u4e2d\uff0c\u53e6\u4e00\u534a\u7a7a\u95f4\u6d6a\u8d39\u5728\u7b2c\u4e8c\u4e2a\u6620\u5c04\u4e2d\uff0c\u56e0\u4e3a\u504f\u79fb\u91cf\u4e0d\u662f\u9875\u9762\u5927\u5c0f\u7684\u6574\u6570\u500d\u3002\u4f7f\u7528\u6700\u5c0f\u8d44\u6e90\u7684\u6620\u5c04\u5e94\u8be5\u662f\u6620\u5c04\u6574\u4e2a\u9875\u9762\u6587\u4ef6\uff1a<\/p>\n<div>\n<div class=\"dp-highlighter bg_cpp\">\n<div class=\"bar\">\n<div class=\"tools\"><strong>[cpp]<\/strong>\u00a0<a class=\"ViewSource\" title=\"view plain\" href=\"http:\/\/blog.csdn.net\/great3779\/article\/details\/7226388\">view plain<\/a><span class=\"tracking-ad\" data-mod=\"popu_168\">\u00a0<a class=\"CopyToClipboard\" title=\"copy\" href=\"http:\/\/blog.csdn.net\/great3779\/article\/details\/7226388\" target=\"_blank\" rel=\"noopener\">copy<\/a><\/span><\/div>\n<\/div>\n<ol class=\"dp-cpp\" start=\"1\">\n<li class=\"alt\"><span class=\"comment\">\/\/Map\u00a0the\u00a0whole\u00a0first\u00a0half:\u00a0uses\u00a01\u00a0page\u00a0\u00a0<\/span><\/li>\n<li>mapped_region\u00a0region1(\u00a0shm\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0<span class=\"comment\">\/\/Map\u00a0shared\u00a0memory\u00a0\u00a0<\/span><\/li>\n<li class=\"alt\">\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0,\u00a0read_write\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0<span class=\"comment\">\/\/Map\u00a0it\u00a0as\u00a0read-write\u00a0\u00a0<\/span><\/li>\n<li>\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0,\u00a00\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0<span class=\"comment\">\/\/Map\u00a0from\u00a0offset\u00a00\u00a0\u00a0<\/span><\/li>\n<li class=\"alt\">\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0,\u00a0page_size\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0<span class=\"comment\">\/\/Map\u00a0a\u00a0full\u00a0page_size\u00a0\u00a0<\/span><\/li>\n<li>\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0);<\/li>\n<li class=\"alt\"><\/li>\n<li><span class=\"comment\">\/\/Map\u00a0the\u00a0second\u00a0half:\u00a0uses\u00a01\u00a0page\u00a0\u00a0<\/span><\/li>\n<li class=\"alt\">mapped_region\u00a0region2(\u00a0shm\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0<span class=\"comment\">\/\/Map\u00a0shared\u00a0memory\u00a0\u00a0<\/span><\/li>\n<li>\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0,\u00a0read_write\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0<span class=\"comment\">\/\/Map\u00a0it\u00a0as\u00a0read-write\u00a0\u00a0<\/span><\/li>\n<li class=\"alt\">\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0,\u00a0page_size\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0<span class=\"comment\">\/\/Map\u00a0from\u00a0offset\u00a00\u00a0\u00a0<\/span><\/li>\n<li>\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0,\u00a0page_size\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0<span class=\"comment\">\/\/Map\u00a0the\u00a0rest\u00a0\u00a0<\/span><\/li>\n<li class=\"alt\">\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0);<\/li>\n<\/ol>\n<\/div>\n<\/div>\n<p align=\"left\">\u6211\u4eec\u600e\u4e48\u5f97\u5230\u9875\u9762\u5927\u5c0f\u5462\uff1f\u7c7bmapped_region\u6709\u4e00\u4e2a\u9759\u6001\u51fd\u6570\u8fd4\u56de\u9875\u9762\u5927\u5c0f\u503c\uff1a<\/p>\n<div>\n<div class=\"dp-highlighter bg_cpp\">\n<div class=\"bar\">\n<div class=\"tools\"><strong>[cpp]<\/strong>\u00a0<a class=\"ViewSource\" title=\"view plain\" href=\"http:\/\/blog.csdn.net\/great3779\/article\/details\/7226388\">view plain<\/a><span class=\"tracking-ad\" data-mod=\"popu_168\">\u00a0<a class=\"CopyToClipboard\" title=\"copy\" href=\"http:\/\/blog.csdn.net\/great3779\/article\/details\/7226388\" target=\"_blank\" rel=\"noopener\">copy<\/a><\/span><\/div>\n<\/div>\n<ol class=\"dp-cpp\" start=\"1\">\n<li class=\"alt\"><span class=\"comment\">\/\/Obtain\u00a0the\u00a0page\u00a0size\u00a0of\u00a0the\u00a0system\u00a0\u00a0<\/span><\/li>\n<li>std::<span class=\"datatypes\">size_t\u00a0page_size\u00a0=\u00a0mapped_region::get_page_size();\u00a0\u00a0<\/span><\/li>\n<\/ol>\n<\/div>\n<\/div>\n<p align=\"left\">\u64cd\u4f5c\u7cfb\u7edf\u53ef\u80fd\u4f1a\u9650\u5236\u6bcf\u4e2a\u8fdb\u7a0b\u6216\u6bcf\u4e2a\u7cfb\u7edf\u80fd\u4f7f\u7528\u7684\u6620\u5c04\u5185\u5b58\u533a\u57df\u7684\u6570\u76ee\u3002<\/p>\n<p align=\"left\">\n<h2><a name=\"t25\"><\/a><a name=\"\u5728\u6620\u5c04\u533a\u57df\u6784\u5efa\u5bf9\u8c61\u7684\u9650\u5236\"><\/a><a name=\"_Toc315882217\"><\/a>\u5728\u6620\u5c04\u533a\u57df\u6784\u5efa\u5bf9\u8c61\u7684\u9650\u5236<\/h2>\n<p align=\"left\">\u5f53\u4e24\u4e2a\u8fdb\u7a0b\u4e3a\u540c\u4e00\u4e2a\u53ef\u6620\u5c04\u5bf9\u8c61\u521b\u5efa\u4e00\u4e2a\u6620\u5c04\u533a\u57df\u65f6\uff0c\u4e24\u4e2a\u8fdb\u7a0b\u53ef\u4ee5\u901a\u8fc7\u8bfb\u5199\u90a3\u5757\u5185\u5b58\u8fdb\u884c\u901a\u4fe1\u3002\u67d0\u4e00\u8fdb\u7a0b\u80fd\u591f\u5728\u90a3\u5757\u5185\u5b58\u4e2d\u6784\u5efa\u4e00\u4e2aC++\u5bf9\u8c61\u4ee5\u4fbf\u53e6\u4e00\u8fdb\u7a0b\u80fd\u591f\u4f7f\u7528\u5b83\u3002\u4f46\u662f\uff0c\u4e00\u5757\u88ab\u591a\u4e2a\u8fdb\u7a0b\u5171\u4eab\u7684\u6620\u5c04\u533a\u57df\u5e76\u4e0d\u80fd\u627f\u8f7d\u6240\u6709\u5176\u4ed6\u5bf9\u8c61\uff0c\u56e0\u4e3a\u4e0d\u662f\u6240\u6709\u7c7b\u90fd\u80fd\u505a\u4e3a\u8fdb\u7a0b\u5171\u4eab\u5bf9\u8c61\uff0c\u7279\u522b\u662f\u5982\u679c\u6620\u5c04\u533a\u57df\u5728\u5404\u8fdb\u7a0b\u4e2d\u88ab\u6620\u5c04\u81f3\u4e0d\u540c\u7684\u5730\u5740\u4e0a\u3002<\/p>\n<p align=\"left\">\n<h3><a name=\"t26\"><\/a><a name=\"\u7528\u504f\u79fb\u6307\u9488\u4ee3\u66ff\u539f\u59cb\u6307\u9488\"><\/a><a name=\"_Toc315882218\"><\/a>\u7528\u504f\u79fb\u6307\u9488\u4ee3\u66ff\u539f\u59cb\u6307\u9488<\/h3>\n<p align=\"left\">\u5f53\u653e\u7f6e\u4e00\u4e2a\u5bf9\u8c61\u81f3\u6620\u5c04\u533a\u57df\uff0c\u5e76\u4e14\u6bcf\u4e2a\u8fdb\u7a0b\u6620\u5c04\u90a3\u5757\u533a\u57df\u81f3\u4e0d\u540c\u7684\u5730\u5740\u4e0a\u65f6\uff0c\u539f\u59cb\u6307\u9488\u662f\u4e2a\u95ee\u9898\uff0c\u56e0\u4e3a\u5b83\u4eec\u4ec5\u5728\u653e\u7f6e\u5b83\u4eec\u7684\u90a3\u4e2a\u8fdb\u7a0b\u4e2d\u6709\u6548\u3002\u672a\u89e3\u51b3\u6b64\u95ee\u9898\uff0cBoost.Interprocess\u63d0\u4f9b\u4e86\u4e00\u4e2a\u7279\u6b8a\u7684\u667a\u80fd\u6307\u9488\u6765\u66ff\u4ee3\u539f\u59cb\u6307\u9488\u3002\u56e0\u6b64\uff0c\u5305\u542b\u539f\u59cb\u6307\u9488\uff08\u6216\u662fBoost\u7684\u667a\u80fd\u6307\u9488\uff0c\u5176\u5185\u90e8\u5305\u542b\u4e86\u539f\u59cb\u6307\u9488\uff09\u7684\u7528\u6237\u7c7b\u4e0d\u80fd\u88ab\u653e\u7f6e\u5728\u8fdb\u7a0b\u5171\u4eab\u6620\u5c04\u533a\u57df\u4e2d\u3002\u5982\u679c\u4f60\u60f3\u4ece\u4e0d\u540c\u7684\u8fdb\u7a0b\u4e2d\u4f7f\u7528\u8fd9\u4e9b\u5171\u4eab\u5bf9\u8c61\uff0c\u8fd9\u4e9b\u6307\u9488\u5fc5\u987b\u7528\u504f\u79fb\u6307\u9488\u6765\u653e\u7f6e\uff0c\u5e76\u4e14\u8fd9\u4e9b\u6307\u9488\u5fc5\u987b\u4ec5\u6307\u5411\u653e\u7f6e\u5728\u540c\u4e00\u6620\u5c04\u533a\u57df\u7684\u5bf9\u8c61\u3002<\/p>\n<p align=\"left\">\u5f53\u7136\uff0c\u7f6e\u4e8e\u8fdb\u7a0b\u95f4\u5171\u4eab\u7684\u6620\u5c04\u533a\u57df\u7684\u6307\u9488\u4ec5\u80fd\u6307\u5411\u4e00\u4e2a\u6b64\u6620\u5c04\u533a\u57df\u7684\u5bf9\u8c61\uff0c\u6307\u9488\u53ef\u4ee5\u6307\u5411\u4e00\u4e2a\u4ec5\u5728\u4e00\u4e2a\u8fdb\u7a0b\u4e2d\u6709\u6548\u7684\u5730\u5740\uff0c\u800c\u4e14\u5176\u4ed6\u8fdb\u7a0b\u5728\u8bbf\u95ee\u90a3\u4e2a\u5730\u5740\u65f6\u53ef\u80fd\u4f1a\u5d29\u6e83\u3002<\/p>\n<p align=\"left\">\n<h3><a name=\"t27\"><\/a><a name=\"\u5f15\u7528\u9650\u5236\"><\/a><a name=\"_Toc315882219\"><\/a>\u5f15\u7528\u9650\u5236<\/h3>\n<p align=\"left\">\u5f15\u7528\u9047\u5230\u4e86\u4e0e\u6307\u9488\u540c\u6837\u7684\u95ee\u9898\uff08\u4e3b\u8981\u662f\u56e0\u4e3a\u5b83\u4eec\u7684\u884c\u4e3a\u65b9\u5f0f\u7c7b\u4f3c\u6307\u9488\uff09\u3002\u7136\u800c\uff0c\u4e0d\u53ef\u80fd\u5728C++\u4e2d\u521b\u5efa\u4e00\u4e2a\u5b8c\u6210\u53ef\u884c\u7684\u667a\u80fd\u5f15\u7528\uff08\u4f8b\u5982\uff0c\u64cd\u4f5c\u7b26. ()\u4e0d\u80fd\u88ab\u91cd\u8f7d\uff09\u3002\u57fa\u4e8e\u6b64\u539f\u56e0\uff0c\u5982\u679c\u4f7f\u7528\u8005\u60f3\u5728\u5171\u4eab\u5185\u5b58\u4e2d\u653e\u7f6e\u4e00\u4e2a\u5bf9\u8c61\uff0c\u6b64\u5bf9\u8c61\u4e0d\u80fd\u5305\u542b\u4efb\u4f55\uff08\u4e0d\u8bba\u667a\u80fd\u4e0e\u5426\uff09\u5f15\u7528\u53d8\u91cf\u505a\u4e3a\u6210\u5458\u3002<\/p>\n<p align=\"left\">\u5f15\u7528\u4ec5\u80fd\u4f7f\u7528\u5728\u5982\u4e0b\u60c5\u51b5\uff0c\u5982\u679c\u6620\u5c04\u533a\u57df\u5171\u4eab\u4e00\u4e2a\u88ab\u6620\u5c04\u5728\u6240\u6709\u8fdb\u7a0b\u540c\u6837\u57fa\u5730\u5740\u4e0a\u7684\u5185\u5b58\u6bb5\u3002\u548c\u6307\u9488\u4e00\u6837\uff0c\u4e00\u4e2a\u4f4d\u4e8e\u67d0\u6620\u5c04\u533a\u57df\u4e0a\u7684\u5f15\u7528\u4ec5\u80fd\u6307\u5411\u4e00\u4e2a\u6b64\u6620\u5c04\u533a\u57df\u4e2d\u7684\u5bf9\u8c61\u3002<\/p>\n<p align=\"left\">\n<h3><a name=\"t28\"><\/a><a name=\"\u865a\u51fd\u6570\u9650\u5236\"><\/a><a name=\"_Toc315882220\"><\/a>\u865a\u51fd\u6570\u9650\u5236<\/h3>\n<p align=\"left\">\u865a\u51fd\u6570\u8868\u6307\u9488\u548c\u865a\u51fd\u6570\u8868\u4f4d\u4e8e\u5305\u542b\u6b64\u5bf9\u8c61\u7684\u8fdb\u7a0b\u5730\u5740\u7a7a\u95f4\u4e0a\uff0c\u6240\u4ee5\uff0c\u5982\u679c\u6211\u4eec\u5728\u5171\u4eab\u533a\u57df\u653e\u7f6e\u4e00\u4e2a\u5e26\u865a\u51fd\u6570\u7684\u7c7b\u6216\u865a\u57fa\u7c7b\uff0c\u5219\u865a\u6307\u9488\u5bf9\u5176\u5b83\u8fdb\u7a0b\u800c\u8a00\u662f\u65e0\u6548\u7684\uff0c\u5b83\u4eec\u5c06\u5d29\u6e83\u3002<\/p>\n<p align=\"left\">\u8fd9\u4e2a\u95ee\u9898\u89e3\u51b3\u8d77\u6765\u975e\u5e38\u56f0\u96be\uff0c\u56e0\u4e3a\u6bcf\u4e2a\u8fdb\u7a0b\u90fd\u9700\u8981\u4e0d\u540c\u7684\u865a\u51fd\u6570\u8868\u6307\u9488\u5e76\u4e14\u5305\u542b\u6b64\u6307\u9488\u7684\u5bf9\u8c61\u5728\u8bb8\u591a\u8fdb\u7a0b\u95f4\u5171\u4eab\u3002\u53ca\u65f6\u6211\u4eec\u5728\u6bcf\u4e2a\u8fdb\u7a0b\u4e2d\u6620\u5c04\u6620\u5c04\u533a\u57df\u81f3\u76f8\u540c\u7684\u5730\u5740\uff0c\u5728\u6bcf\u4e2a\u8fdb\u7a0b\u4e2d\uff0c\u865a\u51fd\u6570\u8868\u4e5f\u53ef\u80fd\u5728\u4e0d\u540c\u7684\u5730\u5740\u4e0a\u3002\u4e3a\u4e86\u4f7f\u8fdb\u7a0b\u95f4\u5171\u4eab\u5bf9\u8c61\u7684\u865a\u51fd\u6570\u80fd\u591f\u6709\u6548\u5de5\u4f5c\uff0c\u9700\u8981\u5bf9\u7f16\u8bd1\u5668\u505a\u91cd\u5927\u6539\u8fdb\u5e76\u4e14\u865a\u51fd\u6570\u4f1a\u8499\u53d7\u6027\u80fd\u635f\u5931\u3002\u8fd9\u5c31\u662f\u4e3a\u4ec0\u4e48Boost.Interprocess\u6ca1\u6709\u4efb\u4f55\u8ba1\u5212\u5728\u8fdb\u7a0b\u95f4\u5171\u4eab\u7684\u6620\u5c04\u533a\u57df\u4e0a\u652f\u6301\u865a\u51fd\u6570\u4ee5\u53ca\u865a\u7ee7\u627f\u3002<\/p>\n<p align=\"left\">\n<h3><a name=\"t29\"><\/a><a name=\"\u5c0f\u5fc3\u9759\u6001\u6210\u5458\u53d8\u91cf\"><\/a><a name=\"_Toc315882221\"><\/a>\u5c0f\u5fc3\u9759\u6001\u6210\u5458\u53d8\u91cf<\/h3>\n<p align=\"left\">\u7c7b\u7684\u9759\u6001\u6210\u5458\u662f\u88ab\u8be5\u7c7b\u7684\u6240\u6709\u5b9e\u4f8b\u5171\u4eab\u7684\u5168\u5c40\u5bf9\u8c61\u3002\u57fa\u4e8e\u6b64\u539f\u56e0\uff0c\u9759\u6001\u6210\u5458\u5728\u8fdb\u7a0b\u4e2d\u662f\u505a\u4e3a\u5168\u5c40\u53d8\u91cf\u5bf9\u5f85\u7684\u3002<\/p>\n<p align=\"left\">\u5f53\u6784\u5efa\u4e00\u4e2a\u5e26\u9759\u6001\u53d8\u91cf\u7684\u7c7b\u65f6\uff0c\u6bcf\u4e2a\u8fdb\u7a0b\u5747\u6709\u9759\u6001\u53d8\u91cf\u7684\u526f\u672c\uff0c\u56e0\u6b64\u66f4\u65b0\u67d0\u4e00\u8fdb\u7a0b\u4e2d\u9759\u6001\u53d8\u91cf\u7684\u503c\u4e0d\u4f1a\u6539\u53d8\u5176\u5728\u53e6\u4e00\u4e2a\u8fdb\u7a0b\u4e2d\u7684\u503c\u3002\u56e0\u6b64\u8bf7\u5c0f\u5fc3\u4f7f\u7528\u8fd9\u4e9b\u7c7b\u3002\u5982\u679c\u9759\u6001\u53d8\u91cf\u4ec5\u4ec5\u662f\u8fdb\u7a0b\u542f\u52a8\u65f6\u5c31\u521d\u59cb\u5316\u7684\u5e38\u91cf\uff0c\u90a3\u5b83\u4eec\u662f\u6ca1\u6709\u5371\u9669\u7684\uff0c\u4f46\u662f\u5b83\u4eec\u7684\u503c\u662f\u5b8c\u5168\u4e0d\u53d8\u7684\uff08\u4f8b\u5982\uff0c\u5f62\u5982enums\u4f7f\u7528\u65f6\uff09\u5e76\u4e14\u5b83\u4eec\u7684\u503c\u5bf9\u6240\u6709\u8fdb\u7a0b\u5747\u76f8\u540c\u3002<\/p>\n<\/div>\n<div class=\"clear\"><\/div>\n<div id=\"blog_post_info_block\">\n<div id=\"BlogPostCategory\">\u5206\u7c7b:\u00a0<a href=\"http:\/\/www.cnblogs.com\/yeqing-vzenith\/category\/785302.html\" target=\"_blank\" rel=\"noopener\">Boost\u7f16\u7a0b<\/a><\/div>\n<\/div>\n<\/div>\n","protected":false},"excerpt":{"rendered":"<p>Boost:shared_memory_<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"colormag_page_container_layout":"default_layout","colormag_page_sidebar_layout":"default_layout","footnotes":""},"categories":[],"tags":[118],"class_list":["post-1434","post","type-post","status-publish","format-standard","hentry","tag-02-"],"_links":{"self":[{"href":"https:\/\/i007.cc\/wordpress\/wp-json\/wp\/v2\/posts\/1434","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/i007.cc\/wordpress\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/i007.cc\/wordpress\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/i007.cc\/wordpress\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/i007.cc\/wordpress\/wp-json\/wp\/v2\/comments?post=1434"}],"version-history":[{"count":0,"href":"https:\/\/i007.cc\/wordpress\/wp-json\/wp\/v2\/posts\/1434\/revisions"}],"wp:attachment":[{"href":"https:\/\/i007.cc\/wordpress\/wp-json\/wp\/v2\/media?parent=1434"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/i007.cc\/wordpress\/wp-json\/wp\/v2\/categories?post=1434"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/i007.cc\/wordpress\/wp-json\/wp\/v2\/tags?post=1434"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}