/*

 * Copyright (c) 2006, 2019, 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.

 *

 */

#ifndef SHARE_PRIMS_JVMTITHREADSTATE_INLINE_HPP

#define SHARE_PRIMS_JVMTITHREADSTATE_INLINE_HPP

#include "prims/jvmtiEnvThreadState.hpp"

#include "prims/jvmtiThreadState.hpp"

#include "runtime/thread.inline.hpp"

// JvmtiEnvThreadStateIterator implementation

inline JvmtiEnvThreadStateIterator::JvmtiEnvThreadStateIterator(JvmtiThreadState* thread_state) {

  state = thread_state;

  Thread::current()->entering_jvmti_env_iteration();

}

inline JvmtiEnvThreadStateIterator::~JvmtiEnvThreadStateIterator() {

  Thread::current()->leaving_jvmti_env_iteration();

}

inline JvmtiEnvThreadState* JvmtiEnvThreadStateIterator::first() {

  return state->head_env_thread_state();

}

inline JvmtiEnvThreadState* JvmtiEnvThreadStateIterator::next(JvmtiEnvThreadState* ets) {

  return ets->next();

}

// JvmtiThreadState implementation

JvmtiEnvThreadState* JvmtiThreadState::env_thread_state(JvmtiEnvBase *env) {

  JvmtiEnvThreadStateIterator it(this);

  for (JvmtiEnvThreadState* ets = it.first(); ets != NULL; ets = it.next(ets)) {

    if ((JvmtiEnvBase*)(ets->get_env()) == env) {

      return ets;

    }

  }

  return NULL;

}

JvmtiEnvThreadState* JvmtiThreadState::head_env_thread_state() {

  return _head_env_thread_state;

}

void JvmtiThreadState::set_head_env_thread_state(JvmtiEnvThreadState* ets) {

  _head_env_thread_state = ets;

}

inline JvmtiThreadState* JvmtiThreadState::state_for_while_locked(JavaThread *thread) {

  assert(JvmtiThreadState_lock->is_locked(), "sanity check");

  JvmtiThreadState *state = thread->jvmti_thread_state();

  if (state == NULL) {

    if (thread->is_exiting()) {

      // don't add a JvmtiThreadState to a thread that is exiting

      return NULL;

    }

    state = new JvmtiThreadState(thread);

  }

  return state;

}

inline JvmtiThreadState* JvmtiThreadState::state_for(JavaThread *thread) {

  JvmtiThreadState *state = thread->jvmti_thread_state();

  if (state == NULL) {

    MutexLocker mu(JvmtiThreadState_lock);

    // check again with the lock held

    state = state_for_while_locked(thread);

  } else {

    CHECK_UNHANDLED_OOPS_ONLY(Thread::current()->clear_unhandled_oops());

  }

  return state;

}

#endif // SHARE_PRIMS_JVMTITHREADSTATE_INLINE_HPP