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/*
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* Copyright (c) 2003, 2007, Oracle and/or its affiliates. All rights reserved.
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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*
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* This code is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License version 2 only, as
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* published by the Free Software Foundation. Oracle designates this
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* particular file as subject to the "Classpath" exception as provided
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* by Oracle in the LICENSE file that accompanied this code.
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*
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* This code is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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* version 2 for more details (a copy is included in the LICENSE file that
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* accompanied this code).
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*
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* You should have received a copy of the GNU General Public License version
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* 2 along with this work; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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*
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* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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* or visit www.oracle.com if you need additional information or have any
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* questions.
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*/
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/*
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* Copyright 2003 Wily Technology, Inc.
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*/
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#ifndef _REENTRANCY_H_
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#define _REENTRANCY_H_
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#include <jni.h>
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/*
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* This module provides some utility functions to support the "same thread" re-entrancy management.
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* Uses JVMTI TLS to store a single bit per thread.
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* Non-zero means the thread is already inside; zero means the thread is not inside.
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*/
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#ifdef __cplusplus
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extern "C" {
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#endif
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/* returns true if the token is acquired by this call,
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* false if we already hold it and do not have to acquire it
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*/
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extern jboolean
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tryToAcquireReentrancyToken( jvmtiEnv * jvmtienv,
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jthread thread);
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/* release the token; assumes we already hold it */
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extern void
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releaseReentrancyToken( jvmtiEnv * jvmtienv,
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jthread thread);
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#ifdef __cplusplus
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} /* extern "C" */
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#endif /* __cplusplus */
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#endif
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