| 56 | jweak mesosClassLoader = nullptr; |
| 57 | |
| 58 | jclass FindMesosClass(JNIEnv* env, const char* className) |
| 59 | { |
| 60 | if (env->ExceptionCheck()) { |
| 61 | fprintf(stderr, "ERROR: exception pending on entry to " |
| 62 | "FindMesosClass()\n"); |
| 63 | return nullptr; |
| 64 | } |
| 65 | |
| 66 | if (mesosClassLoader == nullptr) { |
| 67 | return env->FindClass(className); |
| 68 | } |
| 69 | |
| 70 | // JNI FindClass uses class names with slashes, but |
| 71 | // ClassLoader.loadClass uses the dotted "binary name" |
| 72 | // format. Convert formats. |
| 73 | string convName = className; |
| 74 | for (uint32_t i = 0; i < convName.size(); i++) { |
| 75 | if (convName[i] == '/') |
| 76 | convName[i] = '.'; |
| 77 | } |
| 78 | |
| 79 | jclass javaLangClassLoader = env->FindClass("java/lang/ClassLoader"); |
| 80 | assert(javaLangClassLoader != nullptr); |
| 81 | jmethodID loadClass = |
| 82 | env->GetMethodID(javaLangClassLoader, |
| 83 | "loadClass", |
| 84 | "(Ljava/lang/String;)Ljava/lang/Class;"); |
| 85 | assert(loadClass != nullptr); |
| 86 | |
| 87 | // Create an object for the class name string; alloc could fail. |
| 88 | jstring strClassName = env->NewStringUTF(convName.c_str()); |
| 89 | if (env->ExceptionCheck()) { |
| 90 | fprintf(stderr, "ERROR: unable to convert '%s' to string\n", |
| 91 | convName.c_str()); |
| 92 | return nullptr; |
| 93 | } |
| 94 | |
| 95 | // Try to find the named class. |
| 96 | jclass cls = (jclass) env->CallObjectMethod(mesosClassLoader, |
| 97 | loadClass, |
| 98 | strClassName); |
| 99 | |
| 100 | if (env->ExceptionCheck()) { |
| 101 | env->ExceptionDescribe(); |
| 102 | fprintf(stderr, "ERROR: unable to load class '%s' from %p\n", |
| 103 | className, mesosClassLoader); |
| 104 | return nullptr; |
| 105 | } |
| 106 | |
| 107 | return cls; |
| 108 | } |
| 109 | |
| 110 | } // namespace { |
| 111 |
no test coverage detected