/*

 * Copyright (c) 2018, Oracle and/or its affiliates. All rights reserved.

 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.

 *

 * This code is free software; you can redistribute it and/or modify it

 * under the terms of the GNU General Public License version 2 only, as

 * published by the Free Software Foundation.

 *

 * This code is distributed in the hope that it will be useful, but WITHOUT

 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or

 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License

 * version 2 for more details (a copy is included in the LICENSE file that

 * accompanied this code).

 *

 * You should have received a copy of the GNU General Public License version

 * 2 along with this work; if not, write to the Free Software Foundation,

 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.

 *

 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA

 * or visit www.oracle.com if you need additional information or have any

 * questions.

 */

#include <stdio.h>

#include <stdlib.h>

#include <pthread.h>

#include <string.h>

#include "jni.h"

#include "jni_util.h"

JavaVM* jvm;

jobject nativeThread;

static void * thread_start(void* unused) {

  JNIEnv *env;

  jclass class_id;

  jmethodID method_id;

  int res;

  printf("Native thread is running and attaching as daemon ...\n");

  res = (*jvm)->AttachCurrentThreadAsDaemon(jvm, (void **)&env, NULL);

  if (res != JNI_OK) {

    fprintf(stderr, "Test ERROR. Can't attach current thread: %d\n", res);

    exit(1);

  }

  class_id = (*env)->FindClass (env, "java/lang/Thread");

  if (class_id == NULL) {

    fprintf(stderr, "Test ERROR. Can't load class Thread\n");

    exit(1);

  }

  method_id = (*env)->GetStaticMethodID(env, class_id, "currentThread",

                                        "()Ljava/lang/Thread;");

  if (method_id == NULL) {

    fprintf(stderr, "Test ERROR. Can't find method currentThread\n");

    exit(1);

  }

  nativeThread = (*env)->CallStaticObjectMethod(env, class_id, method_id, NULL);

  if ((*env)->ExceptionOccurred(env) != NULL) {

    (*env)->ExceptionDescribe(env);

    exit(1);

  }

  printf("Native thread terminating\n");

  return NULL;

}

JNIEXPORT jobject JNICALL

Java_TestTerminatedThread_createTerminatedThread

(JNIEnv *env, jclass cls) {

  pthread_t thread;

  int res = (*env)->GetJavaVM(env, &jvm);

  if (res != JNI_OK) {

    fprintf(stderr, "Test ERROR. Can't extract JavaVM: %d\n", res);

    exit(1);

  }

  if ((res = pthread_create(&thread, NULL, thread_start, NULL)) != 0) {

    fprintf(stderr, "TEST ERROR: pthread_create failed: %s (%d)\n", strerror(res), res);

    exit(1);

  }

  if ((res = pthread_join(thread, NULL)) != 0) {

    fprintf(stderr, "TEST ERROR: pthread_join failed: %s (%d)\n", strerror(res), res);

    exit(1);

  }

  return nativeThread;

}