mgerdin@3619: /*
mikael@6198:  * Copyright (c) 2012, 2013, Oracle and/or its affiliates. All rights reserved.
mgerdin@3619:  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
mgerdin@3619:  *
mgerdin@3619:  * This code is free software; you can redistribute it and/or modify it
mgerdin@3619:  * under the terms of the GNU General Public License version 2 only, as
mgerdin@3619:  * published by the Free Software Foundation.
mgerdin@3619:  *
mgerdin@3619:  * This code is distributed in the hope that it will be useful, but WITHOUT
mgerdin@3619:  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
mgerdin@3619:  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
mgerdin@3619:  * version 2 for more details (a copy is included in the LICENSE file that
mgerdin@3619:  * accompanied this code).
mgerdin@3619:  *
mgerdin@3619:  * You should have received a copy of the GNU General Public License version
mgerdin@3619:  * 2 along with this work; if not, write to the Free Software Foundation,
mgerdin@3619:  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
mgerdin@3619:  *
mgerdin@3619:  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
mgerdin@3619:  * or visit www.oracle.com if you need additional information or have any
mgerdin@3619:  * questions.
mgerdin@3619:  *
mgerdin@3619:  */
mgerdin@3619: 
mgerdin@3619: #ifndef SHARE_VM_PRIMS_WHITEBOX_HPP
mgerdin@3619: #define SHARE_VM_PRIMS_WHITEBOX_HPP
mgerdin@3619: 
nloodin@3681: #include "prims/jni.h"
nloodin@3681: 
nloodin@3681: #include "memory/allocation.hpp"
nloodin@3681: #include "oops/oopsHierarchy.hpp"
nloodin@3681: 
nloodin@3681: // Entry macro to transition from JNI to VM state.
nloodin@3681: 
nloodin@3681: #define WB_ENTRY(result_type, header) JNI_ENTRY(result_type, header)
nloodin@3681: #define WB_END JNI_END
iignatyev@4592: #define WB_METHOD_DECLARE(result_type) extern "C" result_type JNICALL
nloodin@3681: 
ccheung@6347: #define CHECK_JNI_EXCEPTION_(env, value)                               \
ccheung@6347:   do {                                                                 \
ccheung@6347:     JavaThread* THREAD = JavaThread::thread_from_jni_environment(env); \
ccheung@6347:     if (HAS_PENDING_EXCEPTION) {                                       \
ccheung@6347:       CLEAR_PENDING_EXCEPTION;                                         \
ccheung@6347:       return(value);                                                   \
ccheung@6347:     }                                                                  \
ccheung@6346:   } while (0)
ccheung@6346: 
ccheung@6347: #define CHECK_JNI_EXCEPTION(env)                                       \
ccheung@6347:   do {                                                                 \
ccheung@6347:     JavaThread* THREAD = JavaThread::thread_from_jni_environment(env); \
ccheung@6347:     if (HAS_PENDING_EXCEPTION) {                                       \
ccheung@6347:       CLEAR_PENDING_EXCEPTION;                                         \
ccheung@6347:       return;                                                          \
ccheung@6347:     }                                                                  \
ccheung@6346:   } while (0)
ccheung@6346: 
mgerdin@3619: class WhiteBox : public AllStatic {
mgerdin@3619:  private:
mgerdin@3619:   static bool _used;
mgerdin@3619:  public:
mgerdin@3619:   static bool used()     { return _used; }
mgerdin@3619:   static void set_used() { _used = true; }
nloodin@3681:   static int offset_for_field(const char* field_name, oop object,
nloodin@3681:     Symbol* signature_symbol);
nloodin@3681:   static const char* lookup_jstring(const char* field_name, oop object);
nloodin@3681:   static bool lookup_bool(const char* field_name, oop object);
mgerdin@3619: };
mgerdin@3619: 
nloodin@3681: 
nloodin@3681: 
mgerdin@3619: #endif // SHARE_VM_PRIMS_WHITEBOX_HPP