ReturnCode init()

in jvmti-access/src/main/jni/ElasticJvmtiAgent.cpp [23:41]

• 18 lines of code
• 5 McCabe index (conditional complexity)

        ReturnCode init(JNIEnv* jniEnv) {
            if(jvmti != nullptr) {
                return raiseExceptionAndReturn(jniEnv, ReturnCode::ERROR, "JVMTI environment is already initialized!");
            }
            JavaVM* vm;
            auto vmError = jniEnv->GetJavaVM(&vm);
            if(vmError != JNI_OK) {
                return raiseExceptionAndReturn(jniEnv, ReturnCode::ERROR, "jniEnv->GetJavaVM() failed, return code is ", vmError);
            }

            auto getEnvErr = vm->GetEnv(reinterpret_cast<void**>(&jvmti), JVMTI_VERSION_21);
            if(getEnvErr == JNI_EVERSION) {
                getEnvErr = vm->GetEnv(reinterpret_cast<void**>(&jvmti), JVMTI_VERSION_1_2);
            }
            if(getEnvErr != JNI_OK) {
                return raiseExceptionAndReturn(jniEnv, ReturnCode::ERROR, "JavaVM->GetEnv() failed, return code is ", getEnvErr);
            }
            return virtualThreads.init(jniEnv, jvmti);
        }