aoqi@0: /*
aoqi@0:  * Copyright (c) 2012, 2014, Oracle and/or its affiliates. All rights reserved.
aoqi@0:  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
aoqi@0:  *
aoqi@0:  * This code is free software; you can redistribute it and/or modify it
aoqi@0:  * under the terms of the GNU General Public License version 2 only, as
aoqi@0:  * published by the Free Software Foundation.
aoqi@0:  *
aoqi@0:  * This code is distributed in the hope that it will be useful, but WITHOUT
aoqi@0:  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
aoqi@0:  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
aoqi@0:  * version 2 for more details (a copy is included in the LICENSE file that
aoqi@0:  * accompanied this code).
aoqi@0:  *
aoqi@0:  * You should have received a copy of the GNU General Public License version
aoqi@0:  * 2 along with this work; if not, write to the Free Software Foundation,
aoqi@0:  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
aoqi@0:  *
aoqi@0:  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
aoqi@0:  * or visit www.oracle.com if you need additional information or have any
aoqi@0:  * questions.
aoqi@0:  *
aoqi@0:  */
aoqi@0: 
aoqi@0: #ifndef SHARE_VM_PRIMS_WHITEBOX_HPP
aoqi@0: #define SHARE_VM_PRIMS_WHITEBOX_HPP
aoqi@0: 
aoqi@0: #include "prims/jni.h"
aoqi@0: 
aoqi@0: #include "memory/allocation.hpp"
aoqi@0: #include "oops/oopsHierarchy.hpp"
aoqi@0: 
aoqi@0: // Entry macro to transition from JNI to VM state.
aoqi@0: 
aoqi@0: #define WB_ENTRY(result_type, header) JNI_ENTRY(result_type, header)
aoqi@0: #define WB_END JNI_END
aoqi@0: #define WB_METHOD_DECLARE(result_type) extern "C" result_type JNICALL
aoqi@0: 
aoqi@0: #define CHECK_JNI_EXCEPTION_(env, value)                               \
aoqi@0:   do {                                                                 \
aoqi@0:     JavaThread* THREAD = JavaThread::thread_from_jni_environment(env); \
aoqi@0:     if (HAS_PENDING_EXCEPTION) {                                       \
aoqi@0:       return(value);                                                   \
aoqi@0:     }                                                                  \
aoqi@0:   } while (0)
aoqi@0: 
aoqi@0: #define CHECK_JNI_EXCEPTION(env)                                       \
aoqi@0:   do {                                                                 \
aoqi@0:     JavaThread* THREAD = JavaThread::thread_from_jni_environment(env); \
aoqi@0:     if (HAS_PENDING_EXCEPTION) {                                       \
aoqi@0:       return;                                                          \
aoqi@0:     }                                                                  \
aoqi@0:   } while (0)
aoqi@0: 
aoqi@0: class WhiteBox : public AllStatic {
aoqi@0:  private:
aoqi@0:   static bool _used;
aoqi@0:  public:
aoqi@0:   static bool used()     { return _used; }
aoqi@0:   static void set_used() { _used = true; }
aoqi@0:   static int offset_for_field(const char* field_name, oop object,
aoqi@0:     Symbol* signature_symbol);
aoqi@0:   static const char* lookup_jstring(const char* field_name, oop object);
aoqi@0:   static bool lookup_bool(const char* field_name, oop object);
aoqi@0: };
aoqi@0: 
aoqi@0: 
aoqi@0: 
aoqi@0: #endif // SHARE_VM_PRIMS_WHITEBOX_HPP