| duke | 6e45e10 | 2007-12-01 00:00:00 +0000 | [diff] [blame] | 1 | /* |
| ohair | 2283b9d | 2010-05-25 15:58:33 -0700 | [diff] [blame] | 2 | * Copyright (c) 2003, 2007, Oracle and/or its affiliates. All rights reserved. |
| duke | 6e45e10 | 2007-12-01 00:00:00 +0000 | [diff] [blame] | 3 | * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| 4 | * |
| 5 | * This code is free software; you can redistribute it and/or modify it |
| 6 | * under the terms of the GNU General Public License version 2 only, as |
| ohair | 2283b9d | 2010-05-25 15:58:33 -0700 | [diff] [blame] | 7 | * published by the Free Software Foundation. Oracle designates this |
| duke | 6e45e10 | 2007-12-01 00:00:00 +0000 | [diff] [blame] | 8 | * particular file as subject to the "Classpath" exception as provided |
| ohair | 2283b9d | 2010-05-25 15:58:33 -0700 | [diff] [blame] | 9 | * by Oracle in the LICENSE file that accompanied this code. |
| duke | 6e45e10 | 2007-12-01 00:00:00 +0000 | [diff] [blame] | 10 | * |
| 11 | * This code is distributed in the hope that it will be useful, but WITHOUT |
| 12 | * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
| 13 | * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
| 14 | * version 2 for more details (a copy is included in the LICENSE file that |
| 15 | * accompanied this code). |
| 16 | * |
| 17 | * You should have received a copy of the GNU General Public License version |
| 18 | * 2 along with this work; if not, write to the Free Software Foundation, |
| 19 | * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
| 20 | * |
| ohair | 2283b9d | 2010-05-25 15:58:33 -0700 | [diff] [blame] | 21 | * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
| 22 | * or visit www.oracle.com if you need additional information or have any |
| 23 | * questions. |
| duke | 6e45e10 | 2007-12-01 00:00:00 +0000 | [diff] [blame] | 24 | */ |
| 25 | |
| 26 | /* |
| 27 | * Copyright 2003 Wily Technology, Inc. |
| 28 | */ |
| 29 | |
| 30 | #ifndef _REENTRANCY_H_ |
| 31 | #define _REENTRANCY_H_ |
| 32 | |
| 33 | #include <jni.h> |
| 34 | |
| 35 | /* |
| 36 | * This module provides some utility functions to support the "same thread" re-entrancy management. |
| 37 | * Uses JVMTI TLS to store a single bit per thread. |
| 38 | * Non-zero means the thread is already inside; zero means the thread is not inside. |
| 39 | */ |
| 40 | |
| 41 | #ifdef __cplusplus |
| 42 | extern "C" { |
| 43 | #endif |
| 44 | |
| 45 | /* returns true if the token is acquired by this call, |
| 46 | * false if we already hold it and do not have to acquire it |
| 47 | */ |
| 48 | extern jboolean |
| 49 | tryToAcquireReentrancyToken( jvmtiEnv * jvmtienv, |
| 50 | jthread thread); |
| 51 | |
| 52 | /* release the token; assumes we already hold it */ |
| 53 | extern void |
| 54 | releaseReentrancyToken( jvmtiEnv * jvmtienv, |
| 55 | jthread thread); |
| 56 | |
| 57 | |
| 58 | #ifdef __cplusplus |
| 59 | } /* extern "C" */ |
| 60 | #endif /* __cplusplus */ |
| 61 | |
| 62 | |
| 63 | #endif |