1/*
2 * Copyright (c) 1997, 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.
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19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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23 */
24
25#ifndef SHARE_PRIMS_NATIVELOOKUP_HPP
26#define SHARE_PRIMS_NATIVELOOKUP_HPP
27
28#include "memory/allocation.hpp"
29#include "runtime/handles.hpp"
30
31// NativeLookup provides an interface for finding DLL entry points for
32// Java native functions.
33
34class NativeLookup : AllStatic {
35 private:
36 // Style specific lookup
37 static address lookup_style(const methodHandle& method, char* pure_name, const char* long_name, int args_size, bool os_style, bool& in_base_library, TRAPS);
38 static address lookup_critical_style(const methodHandle& method, char* pure_name, const char* long_name, int args_size, bool os_style);
39 static address lookup_base (const methodHandle& method, bool& in_base_library, TRAPS);
40 static address lookup_entry(const methodHandle& method, bool& in_base_library, TRAPS);
41 static address lookup_entry_prefixed(const methodHandle& method, bool& in_base_library, TRAPS);
42 public:
43 // JNI name computation
44 static char* pure_jni_name(const methodHandle& method);
45 static char* long_jni_name(const methodHandle& method);
46 static char* critical_jni_name(const methodHandle& method);
47
48 // Lookup native function. May throw UnsatisfiedLinkError.
49 static address lookup(const methodHandle& method, bool& in_base_library, TRAPS);
50 static address lookup_critical_entry(const methodHandle& method);
51
52 // Lookup native functions in base library.
53 static address base_library_lookup(const char* class_name, const char* method_name, const char* signature);
54};
55
56#endif // SHARE_PRIMS_NATIVELOOKUP_HPP
57