{"id":10991,"date":"2021-11-04T01:23:36","date_gmt":"2021-11-03T17:23:36","guid":{"rendered":"https:\/\/www.bookcard.net\/wordpress\/?p=10991"},"modified":"2021-11-04T01:31:51","modified_gmt":"2021-11-03T17:31:51","slug":"android_studio_ndk_posix_thread","status":"publish","type":"post","link":"https:\/\/www.bookcard.net\/wordpress\/android_studio_ndk_posix_thread\/","title":{"rendered":"Android Studio NDK-POSIX\u7dda\u7a0b"},"content":{"rendered":"
\"Android<\/a>
Android Studio NDK-POSIX\u7dda\u7a0b<\/figcaption><\/figure>\n

Android_Studio_NDK_POSIX_Thread<\/p>\n

Android Studio NDK-POSIX\u7dda\u7a0b<\/p>\n

\u300eAndroid Studio NDK\u300f\u751f\u6210\u300eC\/C++\u300f\u7dda\u7a0b,\u4f7f\u7528 POSIX\u7dda\u7a0b\u7c21\u7a31\u300ePthreads\u300f. \u5112\u7565\u6b771995\u5e74\u767c\u5e03POSIX.1c\u300e\u6a19\u51c6\u300f\u300e\u64f4\u5c55\u300f\u7dab\u7a0b.\u70ba\u7dda\u7a0b\u5b9a\u7fa9\u300e\u5275\u5efa\u300f\u300e\u8655\u7406\u300fAPI.\u300eMicrsoft Windows\u300f\u300eMac OS X\u300f\u300eLinux\u300f\u519a\u8fac\u862d\u652f\u6301POSIX\u7dda\u7a0b.<\/p>\n

\u4e8b\u56e0\u300ePOSIX\u7dda\u7a0b\u300f\u5514\u5c6c\u4e8e\u300eJAVA\u300f\u5e73\u81fa, \u5c0e\u81f4\u300eJAVA\u865b\u64ec\u6a5f\u300f\u5187\u767c\u8b58\u5225\u300ePOSIX\u7dda\u7a0b\u300f, \u00a0\u70ba\u5497\u8a2a\u554f\u300eJAVA\u865b\u64ec\u6a5f\u300f,\u300ePOSIX\u7dda\u7a0b\u300f\u7dda\u7a0b\u5148\u9644\u4fc2\u300eJAVA\u865b\u64ec\u6a5f\u300f\u518d\u884c.<\/p>\n

    \n
  1. \u4fc2\u300eNDK\u300f\u539f\u751f\u4ee3\u78bc\u7528POSIX\u7dda\u7a0b, \u52a0\u5165\u300eh\u300f\u982d\u6587\u6a94\u8072\u660e\u300ePOSIX Thread APIs\u300f, \u4fc2\u300eAndroid\u300f\u5be6\u73fe\u4fc2\u300eBionic API\u300f\u5eab<\/li>\n<\/ol>\n\n\n\n\n
    #include <pthread.h> \/\/ POSIX\u7dda\u7a0b<\/td>\n<\/tr>\n
    #include <jni.h><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n
      \n
    1. \u7528pthread_create()\u5275\u5efa\u7dda\u7a0b<\/li>\n<\/ol>\n\n\n\n
      int pthread_create(pthread_t * thread,<\/p>\n

      pthread_attr_t const * attr,<\/p>\n

      void *(* start_routine)(void *),<\/p>\n

      void * arg);<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

        \n
      1. \u53c3\u6578<\/li>\n<\/ol>\n\n\n\n\n\n\n\n
        \u53c3\u6578<\/td>\n\u7c21\u4ecb<\/td>\n<\/tr>\n
        thread<\/td>\n\u8fd4\u56de\u65b0\u5efa\u7dab\u7a0b\u53e5\u67c4<\/td>\n<\/tr>\n
        attr<\/td>\n\u6307\u5b9a\u7dda\u7a0b\u5c6c\u6027,\u5085NULL\u4f7f\u7528\u9ed8\u8a8d\u503c.<\/td>\n<\/tr>\n
        start_routine<\/td>\n\u6307\u5411\u7dab\u7a0b\u51fd\u5f0f\u5730\u5740,<\/td>\n<\/tr>\n
        args<\/td>\n\u7dda\u7a0b\u51fd\u5f0f\u53c3\u6578<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n
          \n
        1. \u8fd4\u56de\u503c<\/li>\n<\/ol>\n\n\n\n\n
          0<\/td>\n\u7dda\u7a0b\u555f\u52d5<\/td>\n<\/tr>\n
          Error code<\/td>\n\u932f\u8aa4\u78bc<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n
            \n
          1. \u7dda\u7a0b\u53e5\u67c4<\/li>\n<\/ol>\n\n\n\n
            pthread_t\u00a0\u00a0\u00a0\u00a0\u00a0 threadID;<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n
              \n
            1. \u7dda\u7a0b\u51fd\u5f0f\u53c3\u6578,\u8981\u5168\u57df\u8b8a\u91cf,\u82e5\u50b3\u591a\u53c3\u6578\u8981\u300estruct\u300f\u849e\u5c01\u88dd.<\/li>\n<\/ol>\n\n\n\n
              typedef struct OPENGL_TYP{<\/p>\n

              JNIEnv *env;\/\/\u00a0 \u00a0JNI<\/p>\n

              AAssetManager * aassetManager;\/\/ \u8cc7\u6e90\u7ba1\u7406<\/p>\n

              EGLDisplay display ;<\/p>\n

              EGLSurface surface;\/\/ \u5167\u6838\u6e32\u67d3\u8868\u5c64<\/p>\n

              int Width, Height;\/\/ \u7192\u5c4f\u5bec\u9ad8<\/p>\n

              }OPENGL,*OPENGL_PTR;<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

                \n
              1. \u7dab\u7a0b\u51fd\u5f0f\u6a23\u677f<\/li>\n<\/ol>\n\n\n\n
                void * start_rountine (void * args)<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n
                  \n
                1. \u6e38\u6232\u904b\u884c\u7dab\u7a0b\u5be6\u4f8b<\/li>\n<\/ol>\n\n\n\n
                  void * run_game(void * param){<\/p>\n

                  while (run == true)\u00a0\u00a0\u00a0 {<\/p>\n

                  Update_World();\/\/ \u66f4\u65b0<\/p>\n

                  Draw_World();\/\/ \u7e6a\u756b<\/p>\n

                  }<\/p>\n

                  }<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

                    \n
                  1. \u7de9\u5b58JavaVM\u63a5\u53e3\u6307\u91dd<\/li>\n<\/ol>\n\n\n\n
                    jint JNI_OnLoad (JavaVM* vm, void* reserved){<\/p>\n

                    javaVm = vm;<\/p>\n

                    return JNI_VERSION_1_4;<\/p>\n

                    }<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

                      \n
                    1. \u5c07\u7dda\u7a0b\u9644\u8457\u4fc2JAVA\u865b\u64ec\u6a5f,\u7372\u5f97\u5c6c\u65bc\u672c\u7dda\u7a0bJNIEnv\u63a5\u53e3. \u8fd4\u56de\u300e\u96f6\u300f\u6210\u529f,\u975e\u300e\u96f6\u300f\u70ba\u932f\u8aa4\u78bc<\/li>\n<\/ol>\n\n\n\n
                      \u00a0\u00a0\u00a0 if(javaVm->AttachCurrentThread(&env,NULL) == 0)<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n
                        \n
                      1. \u4fc2JAVA\u865b\u64ec\u6a5f\u5206\u96e2\u7dab\u7a0b.\u8fd4\u56de\u300e\u96f6\u300f\u6210\u529f,\u975e\u300e\u96f6\u300f\u70ba\u932f\u8aa4\u78bc<\/li>\n<\/ol>\n\n\n\n
                        \u00a0\u00a0\u00a0 if(javaVm->DetachCurrentThread() == 0)<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n
                          \n
                        1. \u555f\u52d5\u7dda\u7a0b<\/li>\n<\/ol>\n\n\n\n
                          \u00a0if( pthread_create(&threadID,\u00a0 NULL, run_game, openGL) == 0)<\/p>\n

                          return true;<\/p>\n

                          else<\/p>\n

                          return false;<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

                            \n
                          1. \u6e38\u6232\u904b\u884c\u7dab\u7a0b<\/li>\n<\/ol>\n\n\n\n
                            void * run_game(void * param){<\/p>\n

                            \/\/ \u5c07\u7dda\u7a0b\u9644\u8457\u4fc2JAVA\u865b\u64ec\u6a5f,<\/p>\n

                            if(javaVm->AttachCurrentThread(&env,NULL) != 0)<\/p>\n

                            return NULL;<\/p>\n

                            Init_Engine( ); \/\/ \u521d\u6b64\u5f15\u64ce<\/p>\n

                            Init_World( );\u00a0 \/\/ \u521d\u6b64\u6e38\u6232\u4e16\u754c<\/p>\n

                            while (run == true)\u00a0\u00a0\u00a0 {<\/p>\n

                            Update_World();\/\/ \u66f4\u65b0<\/p>\n

                            Draw_World();\/\/ \u7e6a\u756b<\/p>\n

                            }<\/p>\n

                            Shutdown_World();\/\/ \u9582\u6e38\u6232\u4e16\u754c<\/p>\n

                            Shutdown_Engine();\u00a0 \/\/ \u9582\u5f15\u64ce<\/p>\n

                            \/\/ \u4fc2JAVA\u865b\u64ec\u6a5f\u5206\u96e2\u7dab\u7a0b<\/p>\n

                            javaVm->DetachCurrentThread();<\/p>\n

                            return NULL;<\/p>\n

                            }<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

                            \u4e4b\u524d\u4fc2\u300eJAVA Thread\u300f\u884c\u300eANativeWindow_fromSurface()\u300f\u5187\u4e8b,\u4fc2\u300eC\/C++ Thread\u300f\u884c\u300eANativeWindow_fromSurface()\u300f\u6b7b\u6a5f. \u6688\u5f97\u58f9\u9663\u9663.<\/p>\n","protected":false},"excerpt":{"rendered":"

                            Android_Studio_NDK_POSIX_Thread Android Studio NDK-POSI … <\/p>\n

                            \u7e7c\u7e8c\u95b1\u8b80 Android Studio NDK-POSIX\u7dda\u7a0b<\/span><\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[4],"tags":[2],"class_list":["post-10991","post","type-post","status-publish","format-standard","hentry","category-android","tag-android","entry"],"amp_enabled":true,"_links":{"self":[{"href":"https:\/\/www.bookcard.net\/wordpress\/wp-json\/wp\/v2\/posts\/10991","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.bookcard.net\/wordpress\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.bookcard.net\/wordpress\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.bookcard.net\/wordpress\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.bookcard.net\/wordpress\/wp-json\/wp\/v2\/comments?post=10991"}],"version-history":[{"count":2,"href":"https:\/\/www.bookcard.net\/wordpress\/wp-json\/wp\/v2\/posts\/10991\/revisions"}],"predecessor-version":[{"id":10995,"href":"https:\/\/www.bookcard.net\/wordpress\/wp-json\/wp\/v2\/posts\/10991\/revisions\/10995"}],"wp:attachment":[{"href":"https:\/\/www.bookcard.net\/wordpress\/wp-json\/wp\/v2\/media?parent=10991"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.bookcard.net\/wordpress\/wp-json\/wp\/v2\/categories?post=10991"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.bookcard.net\/wordpress\/wp-json\/wp\/v2\/tags?post=10991"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}