1/*
2 * Copyright (c) 2014, 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.
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23 */
24
25#ifndef SHARE_CLASSFILE_CLASSLOADEREXT_HPP
26#define SHARE_CLASSFILE_CLASSLOADEREXT_HPP
27
28#include "classfile/classLoader.hpp"
29#include "classfile/moduleEntry.hpp"
30#include "utilities/macros.hpp"
31
32class ClassListParser;
33
34class ClassLoaderExt: public ClassLoader { // AllStatic
35public:
36 static bool should_verify(int classpath_index) {
37 CDS_ONLY(return (classpath_index >= _app_class_paths_start_index);)
38 NOT_CDS(return false;)
39 }
40
41#if INCLUDE_CDS
42private:
43 enum SomeConstants {
44 max_classpath_index = 0x7fff
45 };
46
47 static char* get_class_path_attr(const char* jar_path, char* manifest, jint manifest_size);
48 static void setup_app_search_path(); // Only when -Xshare:dump
49 static void process_module_table(ModuleEntryTable* met, TRAPS);
50 static SharedPathsMiscInfo* shared_paths_misc_info() {
51 return (SharedPathsMiscInfo*)_shared_paths_misc_info;
52 }
53 // index of first app JAR in shared classpath entry table
54 static jshort _app_class_paths_start_index;
55 // index of first modular JAR in shared modulepath entry table
56 static jshort _app_module_paths_start_index;
57 // the largest path index being used during CDS dump time
58 static jshort _max_used_path_index;
59
60 static bool _has_app_classes;
61 static bool _has_platform_classes;
62
63 static char* read_manifest(ClassPathEntry* entry, jint *manifest_size, bool clean_text, TRAPS);
64 static ClassPathEntry* find_classpath_entry_from_cache(const char* path, TRAPS);
65
66public:
67 static void process_jar_manifest(ClassPathEntry* entry, bool check_for_duplicates);
68
69 // Called by JVMTI code to add boot classpath
70 static void append_boot_classpath(ClassPathEntry* new_entry);
71
72 static void setup_search_paths();
73 static void setup_module_paths(TRAPS);
74
75 static char* read_manifest(ClassPathEntry* entry, jint *manifest_size, TRAPS) {
76 // Remove all the new-line continuations (which wrap long lines at 72 characters, see
77 // http://docs.oracle.com/javase/6/docs/technotes/guides/jar/jar.html#JAR%20Manifest), so
78 // that the manifest is easier to parse.
79 return read_manifest(entry, manifest_size, true, THREAD);
80 }
81 static char* read_raw_manifest(ClassPathEntry* entry, jint *manifest_size, TRAPS) {
82 // Do not remove new-line continuations, so we can easily pass it as an argument to
83 // java.util.jar.Manifest.getManifest() at run-time.
84 return read_manifest(entry, manifest_size, false, THREAD);
85 }
86
87 static void finalize_shared_paths_misc_info();
88
89 static jshort app_class_paths_start_index() { return _app_class_paths_start_index; }
90
91 static jshort app_module_paths_start_index() { return _app_module_paths_start_index; }
92
93 static jshort max_used_path_index() { return _max_used_path_index; }
94
95 static void set_max_used_path_index(jshort used_index) {
96 _max_used_path_index = used_index;
97 }
98
99 static void init_paths_start_index(jshort app_start) {
100 _app_class_paths_start_index = app_start;
101 }
102
103 static void init_app_module_paths_start_index(jshort module_start) {
104 _app_module_paths_start_index = module_start;
105 }
106
107 static bool is_boot_classpath(int classpath_index) {
108 return classpath_index < _app_class_paths_start_index;
109 }
110
111 static bool has_platform_or_app_classes() {
112 return _has_app_classes || _has_platform_classes;
113 }
114
115 static void record_result(const s2 classpath_index,
116 InstanceKlass* result, TRAPS);
117 static InstanceKlass* load_class(Symbol* h_name, const char* path, TRAPS);
118 static void set_has_app_classes() {
119 _has_app_classes = true;
120 }
121 static void set_has_platform_classes() {
122 _has_platform_classes = true;
123 }
124#endif
125};
126
127#endif // SHARE_CLASSFILE_CLASSLOADEREXT_HPP
128