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      1 /*
      2  * Copyright (C) 2010 The Android Open Source Project
      3  *
      4  * Licensed under the Apache License, Version 2.0 (the "License");
      5  * you may not use this file except in compliance with the License.
      6  * You may obtain a copy of the License at
      7  *
      8  *      http://www.apache.org/licenses/LICENSE-2.0
      9  *
     10  * Unless required by applicable law or agreed to in writing, software
     11  * distributed under the License is distributed on an "AS IS" BASIS,
     12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
     13  * See the License for the specific language governing permissions and
     14  * limitations under the License.
     15  */
     16 
     17 #include <poll.h>
     18 
     19 #include <string>
     20 
     21 #include "core_jni_helpers.h"
     22 
     23 extern "C" void android_dlwarning(void*, void (*)(void*, const char*));
     24 
     25 namespace android
     26 {
     27 
     28 static jstring getDlWarning_native(JNIEnv* env, jobject) {
     29     std::string msg;
     30     android_dlwarning(&msg, [](void* obj, const char* msg) {
     31         if (msg != nullptr) {
     32             *reinterpret_cast<std::string*>(obj) = msg;
     33         }
     34     });
     35 
     36     return msg.empty() ? nullptr : env->NewStringUTF(msg.c_str());
     37 }
     38 
     39 static const JNINativeMethod g_methods[] = {
     40     { "getDlWarning",
     41         "()Ljava/lang/String;",
     42         reinterpret_cast<void*>(getDlWarning_native) },
     43 };
     44 
     45 static const char* const kActivityPathName = "android/app/Activity";
     46 
     47 int register_android_app_Activity(JNIEnv* env) {
     48     return RegisterMethodsOrDie(env, kActivityPathName, g_methods, NELEM(g_methods));
     49 }
     50 
     51 } // namespace android
     52