Tue, 17 Oct 2017 12:58:25 +0800
merge
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"
32 #include "oops/symbol.hpp"
33 #include "runtime/interfaceSupport.hpp"
35 // Entry macro to transition from JNI to VM state.
37 #define WB_ENTRY(result_type, header) JNI_ENTRY(result_type, header)
38 #define WB_END JNI_END
39 #define WB_METHOD_DECLARE(result_type) extern "C" result_type JNICALL
41 #define CHECK_JNI_EXCEPTION_(env, value) \
42 do { \
43 JavaThread* THREAD = JavaThread::thread_from_jni_environment(env); \
44 if (HAS_PENDING_EXCEPTION) { \
45 return(value); \
46 } \
47 } while (0)
49 #define CHECK_JNI_EXCEPTION(env) \
50 do { \
51 JavaThread* THREAD = JavaThread::thread_from_jni_environment(env); \
52 if (HAS_PENDING_EXCEPTION) { \
53 return; \
54 } \
55 } while (0)
57 class WhiteBox : public AllStatic {
58 private:
59 static bool _used;
60 public:
61 static bool used() { return _used; }
62 static void set_used() { _used = true; }
63 static int offset_for_field(const char* field_name, oop object,
64 Symbol* signature_symbol);
65 static const char* lookup_jstring(const char* field_name, oop object);
66 static bool lookup_bool(const char* field_name, oop object);
68 static int array_bytes_to_length(size_t bytes);
69 static void register_methods(JNIEnv* env, jclass wbclass, JavaThread* thread,
70 JNINativeMethod* method_array, int method_count);
71 static void register_extended(JNIEnv* env, jclass wbclass, JavaThread* thread);
72 };
76 #endif // SHARE_VM_PRIMS_WHITEBOX_HPP