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/*
* Copyright (c) 2003, 2007, 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. Oracle designates this
* particular file as subject to the "Classpath" exception as provided
* by Oracle in the LICENSE file that accompanied this code.
*
* 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.
*/
/*
* Copyright 2003 Wily Technology, Inc.
*/
#ifndef _REENTRANCY_H_
#define _REENTRANCY_H_
#include <jni.h>
/*
* This module provides some utility functions to support the "same thread" re-entrancy management.
* Uses JVMTI TLS to store a single bit per thread.
* Non-zero means the thread is already inside; zero means the thread is not inside.
*/
#ifdef __cplusplus
extern "C" {
#endif
/* returns true if the token is acquired by this call,
* false if we already hold it and do not have to acquire it
*/
extern jboolean
tryToAcquireReentrancyToken( jvmtiEnv * jvmtienv,
jthread thread);
/* release the token; assumes we already hold it */
extern void
releaseReentrancyToken( jvmtiEnv * jvmtienv,
jthread thread);
#ifdef __cplusplus
} /* extern "C" */
#endif /* __cplusplus */
#endif
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