1/*
2 * Copyright (c) 2012, 2019, 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 */
24
25#ifndef SHARE_PRIMS_WHITEBOX_HPP
26#define SHARE_PRIMS_WHITEBOX_HPP
27
28#include "jni.h"
29
30#include "utilities/exceptions.hpp"
31#include "memory/allocation.hpp"
32#include "oops/oopsHierarchy.hpp"
33#include "oops/symbol.hpp"
34
35#define WB_METHOD_DECLARE(result_type) extern "C" result_type JNICALL
36
37// Unconditionally clear pedantic pending JNI checks
38class ClearPendingJniExcCheck : public StackObj {
39private:
40 JavaThread* _thread;
41public:
42 ClearPendingJniExcCheck(JNIEnv* env) : _thread(JavaThread::thread_from_jni_environment(env)) {}
43 ~ClearPendingJniExcCheck() {
44 _thread->clear_pending_jni_exception_check();
45 }
46};
47
48class CodeBlob;
49class CodeHeap;
50class JavaThread;
51
52class WhiteBox : public AllStatic {
53 private:
54 static bool _used;
55 public:
56 static volatile bool compilation_locked;
57 static bool used() { return _used; }
58 static void set_used() { _used = true; }
59 static int offset_for_field(const char* field_name, oop object,
60 Symbol* signature_symbol);
61 static const char* lookup_jstring(const char* field_name, oop object);
62 static bool lookup_bool(const char* field_name, oop object);
63 static int get_blob_type(const CodeBlob* code);
64 static CodeHeap* get_code_heap(int blob_type);
65 static CodeBlob* allocate_code_blob(int size, int blob_type);
66 static int array_bytes_to_length(size_t bytes);
67 static void register_methods(JNIEnv* env, jclass wbclass, JavaThread* thread,
68 JNINativeMethod* method_array, int method_count);
69 static void register_extended(JNIEnv* env, jclass wbclass, JavaThread* thread);
70 static bool compile_method(Method* method, int comp_level, int bci, Thread* THREAD);
71};
72
73#endif // SHARE_PRIMS_WHITEBOX_HPP
74