/*

 * Copyright (c) 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_JVMCI_JNIACCESSMARK_INLINE_HPP

#define SHARE_JVMCI_JNIACCESSMARK_INLINE_HPP

#include "jvmci/jvmciEnv.hpp"

#include "runtime/interfaceSupport.inline.hpp"

// Wrapper for a JNI call into the JVMCI shared library.

// This performs a ThreadToNativeFromVM transition so that the VM

// will not be blocked if the call takes a long time (e.g., due

// to a GC in the shared library).

class JNIAccessMark : public StackObj {

 private:

  ThreadToNativeFromVM ttnfv;

  HandleMark hm;

  JNIEnv* _env;

 public:

  inline JNIAccessMark(JVMCIEnv* jvmci_env) :

    ttnfv(JavaThread::current()), hm(JavaThread::current()) {

    _env = jvmci_env->_env;

  }

  JNIEnv* env() const { return _env; }

  JNIEnv* operator () () const { return _env; }

};

#endif // SHARE_JVMCI_JNIACCESSMARK_INLINE_HPP