jdk8-mips64-public/hotspot: src/share/vm/prims/whitebox.hpp@4abb719c5620

     1 /*

     2  * Copyright (c) 2012, 2014, Oracle and/or its affiliates. All rights reserved.

     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

     7  * published by the Free Software Foundation.

     8  *

     9  * This code is distributed in the hope that it will be useful, but WITHOUT

    10  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or

    11  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License

    12  * version 2 for more details (a copy is included in the LICENSE file that

    13  * accompanied this code).

    14  *

    15  * You should have received a copy of the GNU General Public License version

    16  * 2 along with this work; if not, write to the Free Software Foundation,

    17  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.

    18  *

    19  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA

    20  * or visit www.oracle.com if you need additional information or have any

    21  * questions.

    22  *

    23  */

    25 #ifndef SHARE_VM_PRIMS_WHITEBOX_HPP

    26 #define SHARE_VM_PRIMS_WHITEBOX_HPP

    28 #include "prims/jni.h"

    30 #include "memory/allocation.hpp"

    31 #include "oops/oopsHierarchy.hpp"

    33 // Entry macro to transition from JNI to VM state.

    35 #define WB_ENTRY(result_type, header) JNI_ENTRY(result_type, header)

    36 #define WB_END JNI_END

    37 #define WB_METHOD_DECLARE(result_type) extern "C" result_type JNICALL

    39 #define CHECK_JNI_EXCEPTION_(env, value)                               \

    40   do {                                                                 \

    41     JavaThread* THREAD = JavaThread::thread_from_jni_environment(env); \

    42     if (HAS_PENDING_EXCEPTION) {                                       \

    43       return(value);                                                   \

    44     }                                                                  \

    45   } while (0)

    47 #define CHECK_JNI_EXCEPTION(env)                                       \

    48   do {                                                                 \

    49     JavaThread* THREAD = JavaThread::thread_from_jni_environment(env); \

    50     if (HAS_PENDING_EXCEPTION) {                                       \

    51       return;                                                          \

    52     }                                                                  \

    53   } while (0)

    55 class WhiteBox : public AllStatic {

    56  private:

    57   static bool _used;

    58  public:

    59   static bool used()     { return _used; }

    60   static void set_used() { _used = true; }

    61   static int offset_for_field(const char* field_name, oop object,

    62     Symbol* signature_symbol);

    63   static const char* lookup_jstring(const char* field_name, oop object);

    64   static bool lookup_bool(const char* field_name, oop object);

    65 };

    69 #endif // SHARE_VM_PRIMS_WHITEBOX_HPP

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