/*
 * Copyright (c) 2007, 2024, 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 <jni.h>
#include <stdio.h>
#include <stdlib.h>
#include "jnihelper.hpp"

extern "C" {

JNIEXPORT jboolean JNICALL
Java_nsk_stress_jni_JNIter006_refs (JNIEnv *env, jobject jobj, jobject tobj, jint LIMIT) {

  static jobject *globRefsArray = 0;
  static int upper = 0;

  jclass clazz;
  jmethodID jmethod;
  jboolean res = JNI_FALSE;
  const char *classname = "nsk/stress/jni/JNIter006";
  const char *getmethodname = "get_i";
  const char *setmethodname = "set_i";
  const char *getsig = "()I";
  const char *setsig = "(I)V";
  const char *setdone = "halt";
  const char *setdonesig = "()V";
  int i = 0;

  if (upper >= LIMIT) {
    return JNI_TRUE;
  }

  if (upper == 0) {
    globRefsArray = (jobject*)c_malloc(env, LIMIT * sizeof(jobject));
  }

  globRefsArray[upper] = env->NewGlobalRef(tobj); CE
  if (env->IsSameObject(tobj, globRefsArray[upper])) {
    env->DeleteLocalRef(tobj); CE
    clazz = env->GetObjectClass(globRefsArray[upper]); CE
  } else {
    fprintf(stderr, "Objects are different\n");
    CHECK(env->MonitorExit(jobj));
    return res;
  }
  jmethod = env->GetStaticMethodID(clazz, setmethodname, setsig); CE
  env->CallStaticVoidMethod(clazz, jmethod, (jint)upper); CE
  CHECK(env->MonitorEnter(jobj));
  ++upper;
  res = JNI_TRUE;
  CHECK(env->MonitorExit(jobj));
  /* If upper == LIMIT than flush ref's array and set */
  /* 'done' flag in JNIter006 class to JNI_TRUE */
  if (upper == LIMIT) {
    fprintf(stderr, "\n\tTotal memory allocated: %zd bytes\n",
            LIMIT * sizeof(jobject));
    clazz = env->FindClass(classname); CE
    jmethod = env->GetMethodID(clazz, setdone, setdonesig); CE
    env->CallVoidMethod(jobj, jmethod); CE

    for (i = 0; i < LIMIT; i++) {
      env->DeleteGlobalRef(globRefsArray[i]); CE
    }
    free(globRefsArray);
  }
  return res;
}

}