{"id":13947,"date":"2024-07-11T15:58:02","date_gmt":"2024-07-11T07:58:02","guid":{"rendered":"http:\/\/xinyiworld.top\/wordpress_it\/?p=13947"},"modified":"2024-09-05T09:19:03","modified_gmt":"2024-09-05T01:19:03","slug":"jni%e7%9a%84%e5%ae%9e%e7%8e%b0%e6%9c%ba%e5%88%b6","status":"publish","type":"post","link":"http:\/\/xinyiworld.top\/wordpress_it\/?p=13947","title":{"rendered":"JNI\u7684\u5b9e\u73b0\u673a\u5236"},"content":{"rendered":"<p><a href=\"https:\/\/www.jianshu.com\/p\/7b9ecc0d6529\">https:\/\/www.jianshu.com\/p\/7b9ecc0d6529<\/a><\/p>\n<p>\u4ece<a href=\"http:\/\/xinyiworld.top\/wordpress_it\/?p=13945\">http:\/\/xinyiworld.top\/wordpress_it\/?p=13945<\/a>\u7684startVM\u65b9\u6cd5\u5f00\u59cb\u5206\u6790\uff1a<\/p>\n<pre><code class=\"language-bash\">1172     \/* start the virtual machine *\/\n1173     JniInvocation jni_invocation;\n1174     jni_invocation.Init(NULL);\n1175     JNIEnv* env;\n1176     if (startVm(&amp;mJavaVM, &amp;env, zygote) != 0) {\n1177         return;\n1178     }<\/code><\/pre>\n<h1>JniInvocation\u7c7b<\/h1>\n<p>\u6e90\u7801\u4f4d\u7f6e\uff1a<code>libnativehelper\/include\/nativehelper\/JniInvocation.h<\/code><br \/>\n\u65b9\u6cd5\u5b9e\u73b0\u7c7b\uff1a<code>libnativehelper\/JniInvocation.cpp<\/code><\/p>\n<pre><code class=\"language-cpp\"> 39 class JniInvocation final {\n 40  public:\n 41   JniInvocation() {\n        \/\/\u521b\u5efaJniInvocationImpl\u5b9e\u4f8b\n 42     impl_ = JniInvocationCreate();\n 43   }\n 44 \n 45   ~JniInvocation() {\n 46     JniInvocationDestroy(impl_);\n 47   }\n 48 \n 49   \/\/ Initialize JNI invocation API. library should specifiy a valid\n 50   \/\/ shared library for opening via dlopen providing a JNI invocation\n 51   \/\/ implementation, or null to allow defaulting via\n 52   \/\/ persist.sys.dalvik.vm.lib.\n 53   bool Init(const char* library) {\n 54     return JniInvocationInit(impl_, library) != 0;\n 55   }\n        ...\n    }<\/code><\/pre>\n<p>\u2192JniInvocationInit<br \/>\n\u5b9e\u73b0\u4f4d\u4e8e<code>libnativehelper\/JniInvocation.cpp<\/code>\u4e2d<\/p>\n<pre><code class=\"language-cpp\">308 MODULE_API int JniInvocationInit(JniInvocationImpl* instance, const char* library) {\n309   return instance-&gt;Init(library) ? 1 : 0;\n310 }<\/code><\/pre>\n<p>\u6839\u636e\u6e90\u7801\u53ef\u77e5\uff0c\u6700\u7ec8<code>instance-&gt;Init<\/code>\u662f\u52a0\u8f7d\u4e86libart.so\u5e93\u3002<\/p>\n<h1>jvm\u7684\u542f\u52a8<\/h1>\n<p>\u89c1<a href=\"http:\/\/xinyiworld.top\/wordpress_it\/?p=13945\">http:\/\/xinyiworld.top\/wordpress_it\/?p=13945<\/a><\/p>\n<button class=\"simplefavorite-button\" data-postid=\"13947\" data-siteid=\"1\" data-groupid=\"1\" data-favoritecount=\"0\" style=\"\">\u6536\u85cf <i class=\"sf-icon-star-empty\"><\/i><\/button>","protected":false},"excerpt":{"rendered":"<p>https:\/\/www.jianshu.com\/p\/7b9ecc0d6529 \u4ecehttp:\/\/xin [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":[],"categories":[1064],"tags":[],"_links":{"self":[{"href":"http:\/\/xinyiworld.top\/wordpress_it\/index.php?rest_route=\/wp\/v2\/posts\/13947"}],"collection":[{"href":"http:\/\/xinyiworld.top\/wordpress_it\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/xinyiworld.top\/wordpress_it\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/xinyiworld.top\/wordpress_it\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"http:\/\/xinyiworld.top\/wordpress_it\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=13947"}],"version-history":[{"count":10,"href":"http:\/\/xinyiworld.top\/wordpress_it\/index.php?rest_route=\/wp\/v2\/posts\/13947\/revisions"}],"predecessor-version":[{"id":14670,"href":"http:\/\/xinyiworld.top\/wordpress_it\/index.php?rest_route=\/wp\/v2\/posts\/13947\/revisions\/14670"}],"wp:attachment":[{"href":"http:\/\/xinyiworld.top\/wordpress_it\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=13947"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/xinyiworld.top\/wordpress_it\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=13947"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/xinyiworld.top\/wordpress_it\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=13947"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}