{"id":657,"date":"2020-03-14T19:07:54","date_gmt":"2020-03-14T19:07:54","guid":{"rendered":"https:\/\/haoyuan.info\/?p=657"},"modified":"2020-03-14T19:08:47","modified_gmt":"2020-03-14T19:08:47","slug":"%e4%bd%bf%e7%94%a8c%e7%bc%96%e5%86%99%e9%9d%a2%e5%90%91%e5%af%b9%e8%b1%a1%e7%9a%84%e5%8a%a8%e6%80%81%e9%93%be%e6%8e%a5%e5%ba%93","status":"publish","type":"post","link":"https:\/\/haoyuan.info\/?p=657","title":{"rendered":"\u4f7f\u7528C++\u7f16\u5199\u9762\u5411\u5bf9\u8c61\u7684\u52a8\u6001\u94fe\u63a5\u5e93"},"content":{"rendered":"<h2>\u80cc\u666f<\/h2>\n<p>CUPOJ\u652f\u6301\u8bb8\u591a\u7684\u8bed\u8a00\u8fdb\u884c\u7f16\u8bd1\u5e76\u8fd0\u884c\u3002\u5f53\u9700\u8981\u7ed9\u5224\u9898\u673a\u589e\u52a0\u4e00\u4e2a\u65b0\u7684\u8bed\u8a00\u65f6\uff0c\u66f4\u6539\u6e90\u4ee3\u7801\u5185\u5bb9\u3001\u7f16\u8bd1\u3001\u6d4b\u8bd5\u3001\u53d1\u5e03\uff0c\u6574\u4e2a\u8fc7\u7a0b\u9700\u8981\u9891\u7e41\u6539\u52a8\u5185\u90e8\u4ee3\u7801\uff0c\u8fd9\u6837\u7834\u574f\u4e86\u5f00\u95ed\u539f\u5219\u3002<\/p>\n<p>\u56e0\u6b64\u4e0d\u59a8\u4f7f\u7528\u52a8\u6001\u94fe\u63a5\u5e93\u89e3\u51b3\u8fd9\u4e2a\u95ee\u9898\u3002<\/p>\n<p>\u7136\u800c\u7ecf\u8fc7\u67e5\u8be2\uff0c\u52a8\u6001\u94fe\u63a5\u5e93\u662f\u4e0d\u652f\u6301\u76f4\u63a5\u5bfc\u51fa\u7c7b\u578b\u7684\u3002\u597d\u5728\u6211\u4eec\u53ef\u4ee5\u901a\u8fc7\u5bf9\u57fa\u7c7b\u7684\u7ee7\u627f\uff0c\u5728\u52a8\u6001\u94fe\u63a5\u5e93\u7684\u6e90\u4ee3\u7801\u66b4\u9732\u4e00\u4e2a\u4e00\u4e2a\u65b9\u6cd5\u7528\u4e8e\u8fd4\u56de\u52a8\u6001\u94fe\u63a5\u5e93\u63d0\u4f9b\u7684\u5bf9\u8c61\u3002<\/p>\n<p>\u672c\u6587\u5b9e\u73b0\u7684\u65b9\u5f0f\u57fa\u4e8e<a class=\"wp-editor-md-post-content-link\" href=\"http:\/\/joeywen.github.io\/how-to-load-cpp-function-and-class-in-runtime\/\">\u5982\u4f55\u5728\u8fd0\u884c\u65f6\u52a0\u8f7dC\uff0b\uff0b\u51fd\u6570\u548c\u7c7b<\/a>,\u8fd9\u91cc\u63d0\u4f9b\u4e00\u4e2a\u5c06\u4ee5\u4e0a\u5185\u5bb9\u6574\u5408\u5230CMake\u9879\u76ee\u4e2d\u7684\u89e3\u51b3\u65b9\u6848\u3002<\/p>\n<p>\u4ee5<a class=\"wp-editor-md-post-content-link\" href=\"https:\/\/github.com\/ryanlee2014\/CUP-Online-Judge-Judger\">CUP Online Judge Judger<\/a>\u4e3a\u4f8b<\/p>\n<p>CMakeLists.txt<\/p>\n<pre><code class=\"language-cmake \">add_library(c11 SHARED C11.h C11.cpp Language.h Language.cpp)\n<\/code><\/pre>\n<p>\u5176\u4e2d<code>c11<\/code>\u662f\u751f\u6210\u7684\u52a8\u6001\u94fe\u63a5\u5e93\u6587\u4ef6\u7684\u540d\u5b57\uff0c\u6700\u7ec8\u8fd9\u4e2a\u5e93\u5728Linux\u7cfb\u7edf\u4e0a\u88ab\u7f16\u8bd1\u4e3a<code>libc11.so<\/code>\u3002\u56e0\u6b64\u9700\u8981\u52a0\u4e0aprefix<code>lib<\/code>\u3002<br \/>\n\u6ce8\u610f\uff0c\u52a8\u6001\u94fe\u63a5\u5e93\u9700\u8981\u6807\u6ce8<code>SHARED<\/code><br \/>\n\u540e\u9762\u52a0\u4e0a\u8fd9\u4e2a\u5e93\u5305\u542b\u7684\u6240\u6709\u6587\u4ef6\u3002\u5728\u672c\u4f8b\u4e2d\u5305\u542bC11\u7684\u7c7b\uff0c\u4ee5\u53ca\u8bed\u8a00<code>Language<\/code>\u57fa\u7c7b\u3002<\/p>\n<p>Language.h<\/p>\n<pre><code class=\"language-cpp \"><br \/>#ifndef JUDGE_CLIENT_LANGUAGE_H\n#define JUDGE_CLIENT_LANGUAGE_H\n#define extlang extern \"C\" Language*\n#define deslang extern \"C\" void\n#include <vector>\n#include <string>\nclass Language {\npublic:\n    virtual void run(int memory) = 0;\n    virtual void setProcessLimit();\n    virtual void setCompileProcessLimit();\n    virtual void compile(std::vector<std::string>&, const char*, const char*);\nprotected:\n    virtual void setCPULimit();\n    virtual void setFSizeLimit();\n    virtual void setASLimit();\n    virtual void setAlarm();\n};\n\ntypedef Language* createLanguageInstance();\n\ntypedef void destroyLanguageInstance(Language*);\n\n\n#endif \/\/JUDGE_CLIENT_LANGUAGE_H\n\n<\/code><\/pre>\n<p>\u8bbe\u8ba1Language\u4e3a\u62bd\u8c61\u7c7b\uff0c\u8bbe\u8ba1\u4e24\u4e2atypedef\u7528\u4e8e\u8c03\u7528\u6784\u9020\u51fd\u6570\u548c\u6790\u6784\u51fd\u6570\u3002<\/p>\n<p>\u5728\u9700\u8981\u4f7f\u7528\u52a8\u6001\u94fe\u63a5\u5e93\u7684\u5730\u65b9\uff0c\u4f7f\u7528<code>dlfcn.h<\/code>\u5934\u6587\u4ef6\u5f15\u5165\u52a8\u6001\u94fe\u63a5\u5e93\u3002<br \/>\n\u5982\u4e0b\u6240\u793a<\/p>\n<pre><code class=\"language-cpp \">#include <dlfcn.h>\nLanguage* getLanguageModel(int language) {\n    string languageName = languageNameReader.GetString(to_string(language));\n    void* languageHandler = dlopen((\"\/usr\/lib\/cupjudge\/lib\" + languageName + \".so\").c_str(), RTLD_LAZY);\n    if (!languageHandler) {\n        cerr << \"Cannot load library: \" << dlerror() << endl;\n        exit(1);\n    }\n    dlerror();\n    createLanguageInstance* createInstance = (createLanguageInstance*) dlsym(languageHandler, (string(\"createInstance\") + languageName).c_str());\n    const char* dlsym_error = dlerror();\n    if (dlsym_error) {\n        cerr << \"Cannot load symbol create: \" << dlsym_error << endl;\n        exit(1);\n    }\n\/\/    destroyLanguageInstance* destroyInstance = (destroyLanguageInstance*) dlsym(languageHandler, (string(\"destroyInstance\") + languageName).c_str());\n\/\/    dlsym_error = dlerror();\n\/\/    if (dlsym_error) {\n\/\/        cerr << \"Cannot load symbol create: \" << dlsym_error << endl;\n\/\/        exit(1);\n\/\/    }\n\n    Language* languageInstance = createInstance();\n    return languageInstance;\n}\n<\/code><\/pre>\n<p>\u6211\u4eec\u5c31\u53ef\u4ee5\u901a\u8fc7\u8fd9\u4e2a\u6307\u9488\u5bf9\u5176\u5bf9\u8c61\u8fdb\u884c\u8bbf\u95ee\u3002<\/p>\n<pre><code class=\"language-cpp \">shared_ptr<Language> languageModel(getLanguageModel(lang));\nlanguageModel->setCompileProcessLimit();\nlanguageModel->run();\n<\/code><\/pre>\n<p>\u540c\u65f6 \u5728\u9700\u8981\u52a8\u6001\u5f15\u5165\u5e93\u7684CMake\u9879\u76ee\u4e2d\uff0c\u52a0\u5165\u4ee5\u4e0b\u5185\u5bb9, \u5f15\u5165CMAKE_DL_LIBS\u5e93<br \/>\nCMakeLists.txt<\/p>\n<pre><code class=\"language-cmake \">target_link_libraries(judge_client ${CMAKE_DL_LIBS})\n<\/code><\/pre>\n","protected":false},"excerpt":{"rendered":"<p>\u80cc\u666f CUPOJ\u652f\u6301\u8bb8\u591a\u7684\u8bed\u8a00\u8fdb\u884c\u7f16\u8bd1\u5e76\u8fd0\u884c\u3002\u5f53\u9700\u8981\u7ed9\u5224\u9898\u673a\u589e\u52a0\u4e00\u4e2a\u65b0\u7684\u8bed\u8a00\u65f6\uff0c\u66f4\u6539\u6e90\u4ee3\u7801\u5185\u5bb9\u3001\u7f16\u8bd1\u3001\u6d4b\u8bd5\u3001\u53d1 [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"spay_email":"","footnotes":"","jetpack_publicize_message":"","jetpack_is_tweetstorm":false},"categories":[39,72],"tags":[24,9,63],"class_list":["post-657","post","type-post","status-publish","format-standard","hentry","category-c","category-online-judge","tag-cpp","tag-github","tag-linux"],"jetpack_featured_media_url":"","jetpack_publicize_connections":[],"jetpack_sharing_enabled":true,"jetpack_shortlink":"https:\/\/wp.me\/p8UC2c-aB","jetpack_likes_enabled":true,"jetpack-related-posts":[],"_links":{"self":[{"href":"https:\/\/haoyuan.info\/index.php?rest_route=\/wp\/v2\/posts\/657","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/haoyuan.info\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/haoyuan.info\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/haoyuan.info\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/haoyuan.info\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=657"}],"version-history":[{"count":0,"href":"https:\/\/haoyuan.info\/index.php?rest_route=\/wp\/v2\/posts\/657\/revisions"}],"wp:attachment":[{"href":"https:\/\/haoyuan.info\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=657"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/haoyuan.info\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=657"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/haoyuan.info\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=657"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}