author | lfoltan |
Tue, 26 Jul 2016 10:29:27 -0400 | |
changeset 40013 | 943cf01a6b82 |
parent 39706 | 8b8fd966478b |
child 40020 | 20738e6bef83 |
permissions | -rw-r--r-- |
36508 | 1 |
/* |
2 |
* Copyright (c) 2016, 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 |
#include "precompiled.hpp" |
|
26 |
#include "classfile/classFileParser.hpp" |
|
27 |
#include "classfile/classLoader.hpp" |
|
28 |
#include "classfile/classLoaderData.inline.hpp" |
|
29 |
#include "classfile/javaAssertions.hpp" |
|
30 |
#include "classfile/javaClasses.hpp" |
|
31 |
#include "classfile/javaClasses.inline.hpp" |
|
32 |
#include "classfile/moduleEntry.hpp" |
|
33 |
#include "classfile/modules.hpp" |
|
34 |
#include "classfile/packageEntry.hpp" |
|
35 |
#include "classfile/stringTable.hpp" |
|
36 |
#include "classfile/symbolTable.hpp" |
|
37 |
#include "classfile/vmSymbols.hpp" |
|
38 |
#include "logging/log.hpp" |
|
37248 | 39 |
#include "memory/resourceArea.hpp" |
36508 | 40 |
#include "oops/instanceKlass.hpp" |
41 |
#include "oops/objArrayKlass.hpp" |
|
42 |
#include "oops/objArrayOop.inline.hpp" |
|
43 |
#include "runtime/arguments.hpp" |
|
44 |
#include "runtime/handles.inline.hpp" |
|
45 |
#include "runtime/javaCalls.hpp" |
|
46 |
#include "runtime/reflection.hpp" |
|
47 |
#include "utilities/utf8.hpp" |
|
48 |
||
49 |
static bool verify_module_name(char *module_name) { |
|
50 |
if (module_name == NULL) return false; |
|
51 |
int len = (int)strlen(module_name); |
|
52 |
return (len > 0 && len <= Symbol::max_length() && |
|
53 |
UTF8::is_legal_utf8((unsigned char *)module_name, len, false) && |
|
54 |
ClassFileParser::verify_unqualified_name(module_name, len, |
|
55 |
ClassFileParser::LegalModule)); |
|
56 |
} |
|
57 |
||
58 |
bool Modules::verify_package_name(char *package_name) { |
|
59 |
if (package_name == NULL) return false; |
|
60 |
int len = (int)strlen(package_name); |
|
61 |
return (len > 0 && len <= Symbol::max_length() && |
|
62 |
UTF8::is_legal_utf8((unsigned char *)package_name, len, false) && |
|
63 |
ClassFileParser::verify_unqualified_name(package_name, len, |
|
64 |
ClassFileParser::LegalClass)); |
|
65 |
} |
|
66 |
||
67 |
static char* get_module_name(oop module, TRAPS) { |
|
68 |
oop name_oop = java_lang_reflect_Module::name(module); |
|
69 |
if (name_oop == NULL) { |
|
70 |
THROW_MSG_NULL(vmSymbols::java_lang_NullPointerException(), "Null module name"); |
|
71 |
} |
|
72 |
char* module_name = java_lang_String::as_utf8_string(name_oop); |
|
73 |
if (!verify_module_name(module_name)) { |
|
74 |
THROW_MSG_NULL(vmSymbols::java_lang_IllegalArgumentException(), |
|
75 |
err_msg("Invalid module name: %s", |
|
76 |
module_name != NULL ? module_name : "NULL")); |
|
77 |
} |
|
78 |
return module_name; |
|
79 |
} |
|
80 |
||
81 |
static const char* get_module_version(jstring version) { |
|
82 |
if (version == NULL) { |
|
83 |
return NULL; |
|
84 |
} |
|
85 |
return java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(version)); |
|
86 |
} |
|
87 |
||
88 |
static ModuleEntryTable* get_module_entry_table(Handle h_loader, TRAPS) { |
|
89 |
// This code can be called during start-up, before the classLoader's classLoader data got |
|
90 |
// created. So, call register_loader() to make sure the classLoader data gets created. |
|
91 |
ClassLoaderData *loader_cld = SystemDictionary::register_loader(h_loader, CHECK_NULL); |
|
92 |
return loader_cld->modules(); |
|
93 |
} |
|
94 |
||
95 |
static PackageEntryTable* get_package_entry_table(Handle h_loader, TRAPS) { |
|
96 |
// This code can be called during start-up, before the classLoader's classLoader data got |
|
97 |
// created. So, call register_loader() to make sure the classLoader data gets created. |
|
98 |
ClassLoaderData *loader_cld = SystemDictionary::register_loader(h_loader, CHECK_NULL); |
|
99 |
return loader_cld->packages(); |
|
100 |
} |
|
101 |
||
102 |
static ModuleEntry* get_module_entry(jobject module, TRAPS) { |
|
103 |
Handle module_h(THREAD, JNIHandles::resolve(module)); |
|
104 |
if (!java_lang_reflect_Module::is_instance(module_h())) { |
|
105 |
THROW_MSG_NULL(vmSymbols::java_lang_IllegalArgumentException(), "Bad module object"); |
|
106 |
} |
|
107 |
return java_lang_reflect_Module::module_entry(module_h(), CHECK_NULL); |
|
108 |
} |
|
109 |
||
110 |
static PackageEntry* get_package_entry(ModuleEntry* module_entry, jstring package, TRAPS) { |
|
111 |
ResourceMark rm(THREAD); |
|
112 |
if (package == NULL) return NULL; |
|
113 |
const char *package_name = java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(package)); |
|
114 |
if (package_name == NULL) return NULL; |
|
115 |
TempNewSymbol pkg_symbol = SymbolTable::new_symbol(package_name, CHECK_NULL); |
|
39616
f82b1f888578
8159262: Walking PackageEntry Export and ModuleEntry Reads Must Occur Only When Neccessary And Wait Until ClassLoader's Aliveness Determined
lfoltan
parents:
39290
diff
changeset
|
116 |
PackageEntryTable* package_entry_table = module_entry->loader_data()->packages(); |
36508 | 117 |
assert(package_entry_table != NULL, "Unexpected null package entry table"); |
118 |
return package_entry_table->lookup_only(pkg_symbol); |
|
119 |
} |
|
120 |
||
121 |
static PackageEntry* get_package_entry_by_name(Symbol* package, |
|
122 |
Handle h_loader, |
|
123 |
TRAPS) { |
|
124 |
if (package != NULL) { |
|
125 |
ResourceMark rm(THREAD); |
|
126 |
if (Modules::verify_package_name(package->as_C_string())) { |
|
127 |
PackageEntryTable* const package_entry_table = |
|
128 |
get_package_entry_table(h_loader, CHECK_NULL); |
|
129 |
assert(package_entry_table != NULL, "Unexpected null package entry table"); |
|
130 |
return package_entry_table->lookup_only(package); |
|
131 |
} |
|
132 |
} |
|
133 |
return NULL; |
|
134 |
} |
|
135 |
||
136 |
bool Modules::is_package_defined(Symbol* package, Handle h_loader, TRAPS) { |
|
137 |
PackageEntry* res = get_package_entry_by_name(package, h_loader, CHECK_false); |
|
138 |
return res != NULL; |
|
139 |
} |
|
140 |
||
141 |
static void define_javabase_module(jobject module, jstring version, |
|
142 |
jstring location, jobjectArray packages, TRAPS) { |
|
143 |
ResourceMark rm(THREAD); |
|
144 |
||
145 |
Handle module_handle(THREAD, JNIHandles::resolve(module)); |
|
146 |
||
147 |
// Obtain java.base's module version |
|
148 |
const char* module_version = get_module_version(version); |
|
149 |
TempNewSymbol version_symbol; |
|
150 |
if (module_version != NULL) { |
|
151 |
version_symbol = SymbolTable::new_symbol(module_version, CHECK); |
|
152 |
} else { |
|
153 |
version_symbol = NULL; |
|
154 |
} |
|
155 |
||
156 |
// Obtain java.base's location |
|
157 |
const char* module_location = NULL; |
|
158 |
TempNewSymbol location_symbol = NULL; |
|
159 |
if (location != NULL) { |
|
160 |
module_location = |
|
161 |
java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(location)); |
|
162 |
if (module_location != NULL) { |
|
163 |
location_symbol = SymbolTable::new_symbol(module_location, CHECK); |
|
164 |
} |
|
165 |
} |
|
166 |
||
167 |
objArrayOop packages_oop = objArrayOop(JNIHandles::resolve(packages)); |
|
168 |
objArrayHandle packages_h(THREAD, packages_oop); |
|
169 |
int num_packages = (packages_h == NULL ? 0 : packages_h->length()); |
|
170 |
||
171 |
// Check that the list of packages has no duplicates and that the |
|
172 |
// packages are syntactically ok. |
|
173 |
GrowableArray<Symbol*>* pkg_list = new GrowableArray<Symbol*>(num_packages); |
|
174 |
for (int x = 0; x < num_packages; x++) { |
|
175 |
oop string_obj = packages_h->obj_at(x); |
|
176 |
||
177 |
if (string_obj == NULL || !string_obj->is_a(SystemDictionary::String_klass())) { |
|
178 |
THROW_MSG(vmSymbols::java_lang_IllegalArgumentException(), |
|
179 |
"Bad package name for module: java.base"); |
|
180 |
} |
|
181 |
char *package_name = java_lang_String::as_utf8_string(string_obj); |
|
182 |
if (!Modules::verify_package_name(package_name)) { |
|
183 |
THROW_MSG(vmSymbols::java_lang_IllegalArgumentException(), |
|
184 |
err_msg("Invalid package name: %s for module: java.base", package_name)); |
|
185 |
} |
|
186 |
Symbol* pkg_symbol = SymbolTable::new_symbol(package_name, CHECK); |
|
187 |
// append_if_missing() returns FALSE if entry already exists. |
|
188 |
if (!pkg_list->append_if_missing(pkg_symbol)) { |
|
189 |
THROW_MSG(vmSymbols::java_lang_IllegalArgumentException(), |
|
190 |
err_msg("Duplicate package name: %s for module java.base", |
|
191 |
package_name)); |
|
192 |
} |
|
193 |
} |
|
194 |
||
195 |
// Validate java_base's loader is the boot loader. |
|
196 |
oop loader = java_lang_reflect_Module::loader(module_handle()); |
|
197 |
if (loader != NULL) { |
|
198 |
THROW_MSG(vmSymbols::java_lang_IllegalArgumentException(), |
|
199 |
"Class loader must be the boot class loader"); |
|
200 |
} |
|
201 |
Handle h_loader = Handle(THREAD, loader); |
|
202 |
||
203 |
// Ensure the boot loader's PackageEntryTable has been created |
|
204 |
PackageEntryTable* package_table = get_package_entry_table(h_loader, CHECK); |
|
205 |
assert(pkg_list->length() == 0 || package_table != NULL, "Bad package_table"); |
|
206 |
||
207 |
// Ensure java.base's ModuleEntry has been created |
|
208 |
assert(ModuleEntryTable::javabase_module() != NULL, "No ModuleEntry for java.base"); |
|
209 |
||
38732
bb77e0dcc7e5
8158060: BasicLayerTest causes fatal error: Thread holding lock at safepoint that vm can block on: Module_lock
hseigel
parents:
38207
diff
changeset
|
210 |
bool duplicate_javabase = false; |
36508 | 211 |
{ |
212 |
MutexLocker m1(Module_lock, THREAD); |
|
213 |
||
38014
8731fa11f766
8152949: Jigsaw crash when Klass in _fixup_module_field_list is unloaded
lfoltan
parents:
37248
diff
changeset
|
214 |
if (ModuleEntryTable::javabase_defined()) { |
38732
bb77e0dcc7e5
8158060: BasicLayerTest causes fatal error: Thread holding lock at safepoint that vm can block on: Module_lock
hseigel
parents:
38207
diff
changeset
|
215 |
duplicate_javabase = true; |
bb77e0dcc7e5
8158060: BasicLayerTest causes fatal error: Thread holding lock at safepoint that vm can block on: Module_lock
hseigel
parents:
38207
diff
changeset
|
216 |
} else { |
38014
8731fa11f766
8152949: Jigsaw crash when Klass in _fixup_module_field_list is unloaded
lfoltan
parents:
37248
diff
changeset
|
217 |
|
38732
bb77e0dcc7e5
8158060: BasicLayerTest causes fatal error: Thread holding lock at safepoint that vm can block on: Module_lock
hseigel
parents:
38207
diff
changeset
|
218 |
// Verify that all java.base packages created during bootstrapping are in |
bb77e0dcc7e5
8158060: BasicLayerTest causes fatal error: Thread holding lock at safepoint that vm can block on: Module_lock
hseigel
parents:
38207
diff
changeset
|
219 |
// pkg_list. If any are not in pkg_list, than a non-java.base class was |
bb77e0dcc7e5
8158060: BasicLayerTest causes fatal error: Thread holding lock at safepoint that vm can block on: Module_lock
hseigel
parents:
38207
diff
changeset
|
220 |
// loaded erroneously pre java.base module definition. |
bb77e0dcc7e5
8158060: BasicLayerTest causes fatal error: Thread holding lock at safepoint that vm can block on: Module_lock
hseigel
parents:
38207
diff
changeset
|
221 |
package_table->verify_javabase_packages(pkg_list); |
36508 | 222 |
|
38732
bb77e0dcc7e5
8158060: BasicLayerTest causes fatal error: Thread holding lock at safepoint that vm can block on: Module_lock
hseigel
parents:
38207
diff
changeset
|
223 |
// loop through and add any new packages for java.base |
bb77e0dcc7e5
8158060: BasicLayerTest causes fatal error: Thread holding lock at safepoint that vm can block on: Module_lock
hseigel
parents:
38207
diff
changeset
|
224 |
PackageEntry* pkg; |
bb77e0dcc7e5
8158060: BasicLayerTest causes fatal error: Thread holding lock at safepoint that vm can block on: Module_lock
hseigel
parents:
38207
diff
changeset
|
225 |
for (int x = 0; x < pkg_list->length(); x++) { |
bb77e0dcc7e5
8158060: BasicLayerTest causes fatal error: Thread holding lock at safepoint that vm can block on: Module_lock
hseigel
parents:
38207
diff
changeset
|
226 |
// Some of java.base's packages were added early in bootstrapping, ignore duplicates. |
bb77e0dcc7e5
8158060: BasicLayerTest causes fatal error: Thread holding lock at safepoint that vm can block on: Module_lock
hseigel
parents:
38207
diff
changeset
|
227 |
if (package_table->lookup_only(pkg_list->at(x)) == NULL) { |
bb77e0dcc7e5
8158060: BasicLayerTest causes fatal error: Thread holding lock at safepoint that vm can block on: Module_lock
hseigel
parents:
38207
diff
changeset
|
228 |
pkg = package_table->locked_create_entry_or_null(pkg_list->at(x), ModuleEntryTable::javabase_module()); |
bb77e0dcc7e5
8158060: BasicLayerTest causes fatal error: Thread holding lock at safepoint that vm can block on: Module_lock
hseigel
parents:
38207
diff
changeset
|
229 |
assert(pkg != NULL, "Unable to create a java.base package entry"); |
bb77e0dcc7e5
8158060: BasicLayerTest causes fatal error: Thread holding lock at safepoint that vm can block on: Module_lock
hseigel
parents:
38207
diff
changeset
|
230 |
} |
bb77e0dcc7e5
8158060: BasicLayerTest causes fatal error: Thread holding lock at safepoint that vm can block on: Module_lock
hseigel
parents:
38207
diff
changeset
|
231 |
// Unable to have a GrowableArray of TempNewSymbol. Must decrement the refcount of |
bb77e0dcc7e5
8158060: BasicLayerTest causes fatal error: Thread holding lock at safepoint that vm can block on: Module_lock
hseigel
parents:
38207
diff
changeset
|
232 |
// the Symbol* that was created above for each package. The refcount was incremented |
bb77e0dcc7e5
8158060: BasicLayerTest causes fatal error: Thread holding lock at safepoint that vm can block on: Module_lock
hseigel
parents:
38207
diff
changeset
|
233 |
// by SymbolTable::new_symbol and as well by the PackageEntry creation. |
bb77e0dcc7e5
8158060: BasicLayerTest causes fatal error: Thread holding lock at safepoint that vm can block on: Module_lock
hseigel
parents:
38207
diff
changeset
|
234 |
pkg_list->at(x)->decrement_refcount(); |
36508 | 235 |
} |
38732
bb77e0dcc7e5
8158060: BasicLayerTest causes fatal error: Thread holding lock at safepoint that vm can block on: Module_lock
hseigel
parents:
38207
diff
changeset
|
236 |
|
bb77e0dcc7e5
8158060: BasicLayerTest causes fatal error: Thread holding lock at safepoint that vm can block on: Module_lock
hseigel
parents:
38207
diff
changeset
|
237 |
// Finish defining java.base's ModuleEntry |
bb77e0dcc7e5
8158060: BasicLayerTest causes fatal error: Thread holding lock at safepoint that vm can block on: Module_lock
hseigel
parents:
38207
diff
changeset
|
238 |
ModuleEntryTable::finalize_javabase(module_handle, version_symbol, location_symbol); |
36508 | 239 |
} |
38732
bb77e0dcc7e5
8158060: BasicLayerTest causes fatal error: Thread holding lock at safepoint that vm can block on: Module_lock
hseigel
parents:
38207
diff
changeset
|
240 |
} |
bb77e0dcc7e5
8158060: BasicLayerTest causes fatal error: Thread holding lock at safepoint that vm can block on: Module_lock
hseigel
parents:
38207
diff
changeset
|
241 |
if (duplicate_javabase) { |
bb77e0dcc7e5
8158060: BasicLayerTest causes fatal error: Thread holding lock at safepoint that vm can block on: Module_lock
hseigel
parents:
38207
diff
changeset
|
242 |
THROW_MSG(vmSymbols::java_lang_IllegalArgumentException(), |
bb77e0dcc7e5
8158060: BasicLayerTest causes fatal error: Thread holding lock at safepoint that vm can block on: Module_lock
hseigel
parents:
38207
diff
changeset
|
243 |
"Module java.base is already defined"); |
36508 | 244 |
} |
245 |
||
246 |
log_debug(modules)("define_javabase_module(): Definition of module: java.base," |
|
247 |
" version: %s, location: %s, package #: %d", |
|
248 |
module_version != NULL ? module_version : "NULL", |
|
249 |
module_location != NULL ? module_location : "NULL", |
|
250 |
pkg_list->length()); |
|
251 |
||
252 |
// packages defined to java.base |
|
253 |
for (int x = 0; x < pkg_list->length(); x++) { |
|
254 |
log_trace(modules)("define_javabase_module(): creation of package %s for module java.base", |
|
255 |
(pkg_list->at(x))->as_C_string()); |
|
256 |
} |
|
257 |
||
258 |
// Patch any previously loaded classes' module field with java.base's jlr.Module. |
|
259 |
ModuleEntryTable::patch_javabase_entries(module_handle); |
|
260 |
} |
|
261 |
||
262 |
void Modules::define_module(jobject module, jstring version, |
|
263 |
jstring location, jobjectArray packages, TRAPS) { |
|
264 |
ResourceMark rm(THREAD); |
|
265 |
||
266 |
if (module == NULL) { |
|
267 |
THROW_MSG(vmSymbols::java_lang_NullPointerException(), "Null module object"); |
|
268 |
} |
|
269 |
Handle module_handle(THREAD, JNIHandles::resolve(module)); |
|
270 |
if (!java_lang_reflect_Module::is_subclass(module_handle->klass())) { |
|
271 |
THROW_MSG(vmSymbols::java_lang_IllegalArgumentException(), |
|
272 |
"module is not a subclass of java.lang.reflect.Module"); |
|
273 |
} |
|
274 |
||
275 |
char* module_name = get_module_name(module_handle(), CHECK); |
|
276 |
if (module_name == NULL) { |
|
277 |
THROW_MSG(vmSymbols::java_lang_IllegalArgumentException(), |
|
278 |
"Module name cannot be null"); |
|
279 |
} |
|
280 |
||
281 |
// Special handling of java.base definition |
|
282 |
if (strcmp(module_name, "java.base") == 0) { |
|
283 |
define_javabase_module(module, version, location, packages, CHECK); |
|
284 |
return; |
|
285 |
} |
|
286 |
||
287 |
const char* module_version = get_module_version(version); |
|
288 |
||
289 |
objArrayOop packages_oop = objArrayOop(JNIHandles::resolve(packages)); |
|
290 |
objArrayHandle packages_h(THREAD, packages_oop); |
|
291 |
int num_packages = (packages_h == NULL ? 0 : packages_h->length()); |
|
292 |
||
293 |
// Check that the list of packages has no duplicates and that the |
|
294 |
// packages are syntactically ok. |
|
295 |
GrowableArray<Symbol*>* pkg_list = new GrowableArray<Symbol*>(num_packages); |
|
296 |
for (int x = 0; x < num_packages; x++) { |
|
297 |
oop string_obj = packages_h->obj_at(x); |
|
298 |
||
299 |
if (string_obj == NULL || !string_obj->is_a(SystemDictionary::String_klass())) { |
|
300 |
THROW_MSG(vmSymbols::java_lang_IllegalArgumentException(), |
|
301 |
err_msg("Bad package name for module: %s", module_name)); |
|
302 |
} |
|
303 |
char *package_name = java_lang_String::as_utf8_string(string_obj); |
|
304 |
if (!verify_package_name(package_name)) { |
|
305 |
THROW_MSG(vmSymbols::java_lang_IllegalArgumentException(), |
|
306 |
err_msg("Invalid package name: %s for module: %s", |
|
307 |
package_name, module_name)); |
|
308 |
} |
|
309 |
Symbol* pkg_symbol = SymbolTable::new_symbol(package_name, CHECK); |
|
310 |
// append_if_missing() returns FALSE if entry already exists. |
|
311 |
if (!pkg_list->append_if_missing(pkg_symbol)) { |
|
312 |
THROW_MSG(vmSymbols::java_lang_IllegalArgumentException(), |
|
313 |
err_msg("Duplicate package name: %s for module %s", |
|
314 |
package_name, module_name)); |
|
315 |
} |
|
316 |
} |
|
317 |
||
318 |
oop loader = java_lang_reflect_Module::loader(module_handle()); |
|
319 |
// Make sure loader is not the sun.reflect.DelegatingClassLoader. |
|
320 |
if (loader != java_lang_ClassLoader::non_reflection_class_loader(loader)) { |
|
321 |
THROW_MSG(vmSymbols::java_lang_IllegalArgumentException(), |
|
322 |
"Class loader is an invalid delegating class loader"); |
|
323 |
} |
|
324 |
Handle h_loader = Handle(THREAD, loader); |
|
325 |
||
326 |
// Check that loader is a subclass of java.lang.ClassLoader. |
|
327 |
if (loader != NULL && !java_lang_ClassLoader::is_subclass(h_loader->klass())) { |
|
328 |
THROW_MSG(vmSymbols::java_lang_IllegalArgumentException(), |
|
329 |
"Class loader is not a subclass of java.lang.ClassLoader"); |
|
330 |
} |
|
331 |
||
332 |
ModuleEntryTable* module_table = get_module_entry_table(h_loader, CHECK); |
|
333 |
assert(module_table != NULL, "module entry table shouldn't be null"); |
|
334 |
||
335 |
// Create symbol* entry for module name. |
|
336 |
TempNewSymbol module_symbol = SymbolTable::new_symbol(module_name, CHECK); |
|
337 |
||
338 |
int dupl_pkg_index = -1; |
|
339 |
bool dupl_modules = false; |
|
340 |
||
341 |
// Create symbol* entry for module version. |
|
342 |
TempNewSymbol version_symbol; |
|
343 |
if (module_version != NULL) { |
|
344 |
version_symbol = SymbolTable::new_symbol(module_version, CHECK); |
|
345 |
} else { |
|
346 |
version_symbol = NULL; |
|
347 |
} |
|
348 |
||
349 |
// Create symbol* entry for module location. |
|
350 |
const char* module_location = NULL; |
|
351 |
TempNewSymbol location_symbol = NULL; |
|
352 |
if (location != NULL) { |
|
353 |
module_location = |
|
354 |
java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(location)); |
|
355 |
if (module_location != NULL) { |
|
356 |
location_symbol = SymbolTable::new_symbol(module_location, CHECK); |
|
357 |
} |
|
358 |
} |
|
359 |
||
360 |
ClassLoaderData* loader_data = ClassLoaderData::class_loader_data_or_null(h_loader()); |
|
361 |
assert(loader_data != NULL, "class loader data shouldn't be null"); |
|
362 |
||
363 |
PackageEntryTable* package_table = NULL; |
|
364 |
{ |
|
365 |
MutexLocker ml(Module_lock, THREAD); |
|
366 |
||
367 |
if (num_packages > 0) { |
|
368 |
package_table = get_package_entry_table(h_loader, CHECK); |
|
369 |
assert(package_table != NULL, "Missing package_table"); |
|
370 |
||
371 |
// Check that none of the packages exist in the class loader's package table. |
|
372 |
for (int x = 0; x < pkg_list->length(); x++) { |
|
373 |
if (package_table->lookup_only(pkg_list->at(x)) != NULL) { |
|
374 |
// This could be because the module was already defined. If so, |
|
375 |
// report that error instead of the package error. |
|
376 |
if (module_table->lookup_only(module_symbol) != NULL) { |
|
377 |
dupl_modules = true; |
|
378 |
} else { |
|
379 |
dupl_pkg_index = x; |
|
380 |
} |
|
381 |
break; |
|
382 |
} |
|
383 |
} |
|
384 |
} // if (num_packages > 0)... |
|
385 |
||
386 |
// Add the module and its packages. |
|
387 |
if (!dupl_modules && dupl_pkg_index == -1) { |
|
388 |
// Create the entry for this module in the class loader's module entry table. |
|
389 |
||
390 |
ModuleEntry* module_entry = module_table->locked_create_entry_or_null(module_handle, module_symbol, |
|
391 |
version_symbol, location_symbol, loader_data); |
|
392 |
||
393 |
if (module_entry == NULL) { |
|
394 |
dupl_modules = true; |
|
395 |
} else { |
|
396 |
// Add the packages. |
|
397 |
assert(pkg_list->length() == 0 || package_table != NULL, "Bad package table"); |
|
398 |
PackageEntry* pkg; |
|
399 |
for (int y = 0; y < pkg_list->length(); y++) { |
|
400 |
pkg = package_table->locked_create_entry_or_null(pkg_list->at(y), module_entry); |
|
401 |
assert(pkg != NULL, "Unable to create a module's package entry"); |
|
402 |
||
403 |
// Unable to have a GrowableArray of TempNewSymbol. Must decrement the refcount of |
|
404 |
// the Symbol* that was created above for each package. The refcount was incremented |
|
405 |
// by SymbolTable::new_symbol and as well by the PackageEntry creation. |
|
406 |
pkg_list->at(y)->decrement_refcount(); |
|
407 |
} |
|
408 |
||
409 |
// Store pointer to ModuleEntry record in java.lang.reflect.Module object. |
|
410 |
java_lang_reflect_Module::set_module_entry(module_handle(), module_entry); |
|
411 |
} |
|
412 |
} |
|
413 |
} // Release the lock |
|
414 |
||
415 |
// any errors ? |
|
416 |
if (dupl_modules) { |
|
417 |
THROW_MSG(vmSymbols::java_lang_IllegalArgumentException(), |
|
418 |
err_msg("Module %s is already defined", module_name)); |
|
419 |
} |
|
420 |
if (dupl_pkg_index != -1) { |
|
421 |
THROW_MSG(vmSymbols::java_lang_IllegalArgumentException(), |
|
422 |
err_msg("Package %s for module %s already exists for class loader", |
|
423 |
pkg_list->at(dupl_pkg_index)->as_C_string(), module_name)); |
|
424 |
} |
|
425 |
||
426 |
if (log_is_enabled(Debug, modules)) { |
|
37242 | 427 |
outputStream* logst = Log(modules)::debug_stream(); |
36508 | 428 |
logst->print("define_module(): creation of module: %s, version: %s, location: %s, ", |
429 |
module_name, module_version != NULL ? module_version : "NULL", |
|
430 |
module_location != NULL ? module_location : "NULL"); |
|
431 |
loader_data->print_value_on(logst); |
|
432 |
logst->print_cr(", package #: %d", pkg_list->length()); |
|
433 |
for (int y = 0; y < pkg_list->length(); y++) { |
|
434 |
log_trace(modules)("define_module(): creation of package %s for module %s", |
|
435 |
(pkg_list->at(y))->as_C_string(), module_name); |
|
436 |
} |
|
437 |
} |
|
438 |
||
37773
e5b3e9732c3c
8154956: Module system implementation refresh (4/2016)
alanb
parents:
37248
diff
changeset
|
439 |
// If the module is defined to the boot loader and an exploded build is being |
e5b3e9732c3c
8154956: Module system implementation refresh (4/2016)
alanb
parents:
37248
diff
changeset
|
440 |
// used, prepend <java.home>/modules/modules_name, if it exists, to the system boot class path. |
e5b3e9732c3c
8154956: Module system implementation refresh (4/2016)
alanb
parents:
37248
diff
changeset
|
441 |
if (loader == NULL && |
e5b3e9732c3c
8154956: Module system implementation refresh (4/2016)
alanb
parents:
37248
diff
changeset
|
442 |
!Universe::is_module_initialized() && |
40013 | 443 |
!ClassLoader::has_jrt_entry()) { |
444 |
ClassLoader::add_to_exploded_build_list(module_symbol, CHECK); |
|
36508 | 445 |
} |
446 |
} |
|
447 |
||
448 |
void Modules::set_bootloader_unnamed_module(jobject module, TRAPS) { |
|
449 |
ResourceMark rm(THREAD); |
|
450 |
||
451 |
if (module == NULL) { |
|
452 |
THROW_MSG(vmSymbols::java_lang_NullPointerException(), "Null module object"); |
|
453 |
} |
|
454 |
Handle module_handle(THREAD, JNIHandles::resolve(module)); |
|
455 |
if (!java_lang_reflect_Module::is_subclass(module_handle->klass())) { |
|
456 |
THROW_MSG(vmSymbols::java_lang_IllegalArgumentException(), |
|
457 |
"module is not a subclass of java.lang.reflect.Module"); |
|
458 |
} |
|
459 |
||
460 |
// Ensure that this is an unnamed module |
|
461 |
oop name = java_lang_reflect_Module::name(module_handle()); |
|
462 |
if (name != NULL) { |
|
463 |
THROW_MSG(vmSymbols::java_lang_IllegalArgumentException(), |
|
464 |
"boot loader's unnamed module's java.lang.reflect.Module has a name"); |
|
465 |
} |
|
466 |
||
467 |
// Validate java_base's loader is the boot loader. |
|
468 |
oop loader = java_lang_reflect_Module::loader(module_handle()); |
|
469 |
if (loader != NULL) { |
|
470 |
THROW_MSG(vmSymbols::java_lang_IllegalArgumentException(), |
|
471 |
"Class loader must be the boot class loader"); |
|
472 |
} |
|
473 |
Handle h_loader = Handle(THREAD, loader); |
|
474 |
||
475 |
log_debug(modules)("set_bootloader_unnamed_module(): recording unnamed module for boot loader"); |
|
476 |
||
477 |
// Ensure the boot loader's PackageEntryTable has been created |
|
478 |
ModuleEntryTable* module_table = get_module_entry_table(h_loader, CHECK); |
|
479 |
||
480 |
// Set java.lang.reflect.Module for the boot loader's unnamed module |
|
481 |
ModuleEntry* unnamed_module = module_table->unnamed_module(); |
|
482 |
assert(unnamed_module != NULL, "boot loader's unnamed ModuleEntry not defined"); |
|
483 |
unnamed_module->set_module(ClassLoaderData::the_null_class_loader_data()->add_handle(module_handle)); |
|
484 |
// Store pointer to the ModuleEntry in the unnamed module's java.lang.reflect.Module object. |
|
485 |
java_lang_reflect_Module::set_module_entry(module_handle(), unnamed_module); |
|
486 |
} |
|
487 |
||
488 |
void Modules::add_module_exports(jobject from_module, jstring package, jobject to_module, TRAPS) { |
|
489 |
if (package == NULL) { |
|
490 |
THROW_MSG(vmSymbols::java_lang_NullPointerException(), |
|
491 |
"package is null"); |
|
492 |
} |
|
493 |
if (from_module == NULL) { |
|
494 |
THROW_MSG(vmSymbols::java_lang_NullPointerException(), |
|
495 |
"from_module is null"); |
|
496 |
} |
|
497 |
ModuleEntry* from_module_entry = get_module_entry(from_module, CHECK); |
|
498 |
if (from_module_entry == NULL) { |
|
499 |
THROW_MSG(vmSymbols::java_lang_IllegalArgumentException(), |
|
500 |
"from_module cannot be found"); |
|
501 |
} |
|
502 |
||
503 |
// All packages in unnamed are exported by default. |
|
504 |
if (!from_module_entry->is_named()) return; |
|
505 |
||
506 |
ModuleEntry* to_module_entry; |
|
507 |
if (to_module == NULL) { |
|
508 |
to_module_entry = NULL; // It's an unqualified export. |
|
509 |
} else { |
|
510 |
to_module_entry = get_module_entry(to_module, CHECK); |
|
511 |
if (to_module_entry == NULL) { |
|
512 |
THROW_MSG(vmSymbols::java_lang_IllegalArgumentException(), |
|
513 |
"to_module is invalid"); |
|
514 |
} |
|
515 |
} |
|
516 |
||
517 |
PackageEntry *package_entry = get_package_entry(from_module_entry, package, CHECK); |
|
518 |
ResourceMark rm(THREAD); |
|
519 |
if (package_entry == NULL) { |
|
520 |
const char *package_name = java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(package)); |
|
521 |
THROW_MSG(vmSymbols::java_lang_IllegalArgumentException(), |
|
522 |
err_msg("Package %s not found in from_module %s", |
|
523 |
package_name != NULL ? package_name : "", |
|
524 |
from_module_entry->name()->as_C_string())); |
|
525 |
} |
|
526 |
if (package_entry->module() != from_module_entry) { |
|
527 |
THROW_MSG(vmSymbols::java_lang_IllegalArgumentException(), |
|
528 |
err_msg("Package: %s found in module %s, not in from_module: %s", |
|
529 |
package_entry->name()->as_C_string(), |
|
530 |
package_entry->module()->name()->as_C_string(), |
|
531 |
from_module_entry->name()->as_C_string())); |
|
532 |
} |
|
533 |
||
534 |
log_debug(modules)("add_module_exports(): package %s in module %s is exported to module %s", |
|
535 |
package_entry->name()->as_C_string(), |
|
536 |
from_module_entry->name()->as_C_string(), |
|
537 |
to_module_entry == NULL ? "NULL" : |
|
538 |
to_module_entry->is_named() ? |
|
539 |
to_module_entry->name()->as_C_string() : UNNAMED_MODULE); |
|
540 |
||
39290
0cc9f5028562
8156871: Possible concurrency issue with JVM_AddModuleExports
lfoltan
parents:
38733
diff
changeset
|
541 |
// Do nothing if modules are the same. |
0cc9f5028562
8156871: Possible concurrency issue with JVM_AddModuleExports
lfoltan
parents:
38733
diff
changeset
|
542 |
if (from_module_entry != to_module_entry) { |
36508 | 543 |
package_entry->set_exported(to_module_entry); |
544 |
} |
|
545 |
} |
|
546 |
||
547 |
||
548 |
void Modules::add_module_exports_qualified(jobject from_module, jstring package, |
|
549 |
jobject to_module, TRAPS) { |
|
550 |
if (to_module == NULL) { |
|
551 |
THROW_MSG(vmSymbols::java_lang_NullPointerException(), |
|
552 |
"to_module is null"); |
|
553 |
} |
|
554 |
add_module_exports(from_module, package, to_module, CHECK); |
|
555 |
} |
|
556 |
||
557 |
void Modules::add_reads_module(jobject from_module, jobject to_module, TRAPS) { |
|
558 |
if (from_module == NULL) { |
|
559 |
THROW_MSG(vmSymbols::java_lang_NullPointerException(), |
|
560 |
"from_module is null"); |
|
561 |
} |
|
562 |
||
563 |
ModuleEntry* from_module_entry = get_module_entry(from_module, CHECK); |
|
564 |
if (from_module_entry == NULL) { |
|
565 |
THROW_MSG(vmSymbols::java_lang_IllegalArgumentException(), |
|
566 |
"from_module is not valid"); |
|
567 |
} |
|
568 |
||
569 |
ModuleEntry* to_module_entry; |
|
570 |
if (to_module != NULL) { |
|
571 |
to_module_entry = get_module_entry(to_module, CHECK); |
|
572 |
if (to_module_entry == NULL) { |
|
573 |
THROW_MSG(vmSymbols::java_lang_IllegalArgumentException(), |
|
574 |
"to_module is invalid"); |
|
575 |
} |
|
576 |
} else { |
|
577 |
to_module_entry = NULL; |
|
578 |
} |
|
579 |
||
580 |
ResourceMark rm(THREAD); |
|
581 |
log_debug(modules)("add_reads_module(): Adding read from module %s to module %s", |
|
582 |
from_module_entry->is_named() ? |
|
583 |
from_module_entry->name()->as_C_string() : UNNAMED_MODULE, |
|
584 |
to_module_entry == NULL ? "all unnamed" : |
|
585 |
(to_module_entry->is_named() ? |
|
586 |
to_module_entry->name()->as_C_string() : UNNAMED_MODULE)); |
|
587 |
||
588 |
// if modules are the same or if from_module is unnamed then no need to add the read. |
|
589 |
if (from_module_entry != to_module_entry && from_module_entry->is_named()) { |
|
590 |
from_module_entry->add_read(to_module_entry); |
|
591 |
} |
|
592 |
} |
|
593 |
||
594 |
jboolean Modules::can_read_module(jobject asking_module, jobject target_module, TRAPS) { |
|
595 |
if (asking_module == NULL) { |
|
596 |
THROW_MSG_(vmSymbols::java_lang_NullPointerException(), |
|
597 |
"asking_module is null", JNI_FALSE); |
|
598 |
} |
|
599 |
||
600 |
ModuleEntry* asking_module_entry = get_module_entry(asking_module, CHECK_false); |
|
601 |
if (asking_module_entry == NULL) { |
|
602 |
THROW_MSG_(vmSymbols::java_lang_IllegalArgumentException(), |
|
603 |
"asking_module is invalid", JNI_FALSE); |
|
604 |
} |
|
605 |
||
606 |
// Calling can_read_all_unnamed() with NULL tests if a module is loose. |
|
607 |
if (target_module == NULL) { |
|
608 |
return asking_module_entry->can_read_all_unnamed(); |
|
609 |
} |
|
610 |
||
611 |
ModuleEntry* target_module_entry = get_module_entry(target_module, CHECK_false); |
|
612 |
if (target_module_entry == NULL) { |
|
613 |
THROW_MSG_(vmSymbols::java_lang_IllegalArgumentException(), |
|
614 |
"target_module is invalid", JNI_FALSE); |
|
615 |
} |
|
616 |
||
617 |
ResourceMark rm(THREAD); |
|
618 |
log_debug(modules)("can_read_module(): module %s trying to read module %s, allowed = %s", |
|
619 |
asking_module_entry->is_named() ? |
|
620 |
asking_module_entry->name()->as_C_string() : UNNAMED_MODULE, |
|
621 |
target_module_entry->is_named() ? |
|
622 |
target_module_entry->name()->as_C_string() : UNNAMED_MODULE, |
|
623 |
BOOL_TO_STR(asking_module_entry == target_module_entry || |
|
624 |
(asking_module_entry->can_read_all_unnamed() && |
|
625 |
!target_module_entry->is_named()) || |
|
626 |
asking_module_entry->can_read(target_module_entry))); |
|
627 |
||
628 |
// Return true if: |
|
629 |
// 1. the modules are the same, or |
|
630 |
// 2. the asking_module is unnamed (because unnamed modules read everybody), or |
|
631 |
// 3. the asking_module is loose and the target module is unnamed, or |
|
632 |
// 4. if can_read() returns true. |
|
633 |
if (asking_module_entry == target_module_entry || |
|
634 |
(asking_module_entry->can_read_all_unnamed() && !target_module_entry->is_named())) { |
|
635 |
return true; |
|
636 |
} |
|
637 |
return asking_module_entry->can_read(target_module_entry); |
|
638 |
} |
|
639 |
||
640 |
jboolean Modules::is_exported_to_module(jobject from_module, jstring package, |
|
641 |
jobject to_module, TRAPS) { |
|
642 |
if (package == NULL) { |
|
643 |
THROW_MSG_(vmSymbols::java_lang_NullPointerException(), |
|
644 |
"package is null", JNI_FALSE); |
|
645 |
} |
|
646 |
if (from_module == NULL) { |
|
647 |
THROW_MSG_(vmSymbols::java_lang_NullPointerException(), |
|
648 |
"from_module is null", JNI_FALSE); |
|
649 |
} |
|
650 |
ModuleEntry* from_module_entry = get_module_entry(from_module, CHECK_false); |
|
651 |
if (from_module_entry == NULL) { |
|
652 |
THROW_MSG_(vmSymbols::java_lang_IllegalArgumentException(), |
|
653 |
"from_module is invalid", JNI_FALSE); |
|
654 |
} |
|
655 |
ModuleEntry* to_module_entry; |
|
656 |
if (to_module == NULL) { |
|
657 |
THROW_MSG_(vmSymbols::java_lang_NullPointerException(), |
|
658 |
"to_module is null", JNI_FALSE); |
|
659 |
} |
|
660 |
to_module_entry = get_module_entry(to_module, CHECK_false); |
|
661 |
if (to_module_entry == NULL) { |
|
662 |
THROW_MSG_(vmSymbols::java_lang_IllegalArgumentException(), |
|
663 |
"to_module is invalid", JNI_FALSE); |
|
664 |
} |
|
665 |
||
666 |
PackageEntry *package_entry = get_package_entry(from_module_entry, package, |
|
667 |
CHECK_false); |
|
668 |
ResourceMark rm(THREAD); |
|
669 |
if (package_entry == NULL) { |
|
670 |
THROW_MSG_(vmSymbols::java_lang_IllegalArgumentException(), |
|
671 |
err_msg("Package not found in from_module: %s", |
|
672 |
from_module_entry->is_named() ? |
|
673 |
from_module_entry->name()->as_C_string() : UNNAMED_MODULE), |
|
674 |
JNI_FALSE); |
|
675 |
} |
|
676 |
if (package_entry->module() != from_module_entry) { |
|
677 |
THROW_MSG_(vmSymbols::java_lang_IllegalArgumentException(), |
|
678 |
err_msg("Package: %s found in module %s, not in from_module: %s", |
|
679 |
package_entry->name()->as_C_string(), |
|
680 |
package_entry->module()->is_named() ? |
|
681 |
package_entry->module()->name()->as_C_string() : UNNAMED_MODULE, |
|
682 |
from_module_entry->is_named() ? |
|
683 |
from_module_entry->name()->as_C_string() : UNNAMED_MODULE), |
|
684 |
JNI_FALSE); |
|
685 |
} |
|
686 |
||
687 |
log_debug(modules)("is_exported_to_module: package %s from module %s checking" |
|
688 |
" if exported to module %s, exported? = %s", |
|
689 |
package_entry->name()->as_C_string(), |
|
690 |
from_module_entry->is_named() ? |
|
691 |
from_module_entry->name()->as_C_string() : UNNAMED_MODULE, |
|
692 |
to_module_entry->is_named() ? |
|
693 |
to_module_entry->name()->as_C_string() : UNNAMED_MODULE, |
|
694 |
BOOL_TO_STR(!from_module_entry->is_named() || |
|
695 |
package_entry->is_unqual_exported() || |
|
696 |
from_module_entry == to_module_entry || |
|
697 |
package_entry->is_qexported_to(to_module_entry))); |
|
698 |
||
699 |
// Return true if: |
|
700 |
// 1. from_module is unnamed because unnamed modules export all their packages (by default), or |
|
701 |
// 2. if the package is unqualifiedly exported, or |
|
702 |
// 3. if the modules are the same, or |
|
703 |
// 4. if the package is exported to to_module |
|
704 |
return (!from_module_entry->is_named() || |
|
705 |
package_entry->is_unqual_exported() || |
|
706 |
from_module_entry == to_module_entry || |
|
707 |
package_entry->is_qexported_to(to_module_entry)); |
|
708 |
} |
|
709 |
||
710 |
// This method is called by JFR and JNI. |
|
711 |
jobject Modules::get_module(jclass clazz, TRAPS) { |
|
712 |
assert(ModuleEntryTable::javabase_defined(), "Attempt to call get_module before java.base is defined"); |
|
713 |
||
714 |
if (clazz == NULL) { |
|
715 |
THROW_MSG_(vmSymbols::java_lang_NullPointerException(), |
|
716 |
"class is null", JNI_FALSE); |
|
717 |
} |
|
718 |
oop mirror = JNIHandles::resolve_non_null(clazz); |
|
719 |
if (mirror == NULL) { |
|
720 |
log_debug(modules)("get_module(): no mirror, returning NULL"); |
|
721 |
return NULL; |
|
722 |
} |
|
723 |
if (!java_lang_Class::is_instance(mirror)) { |
|
724 |
THROW_MSG_(vmSymbols::java_lang_IllegalArgumentException(), |
|
725 |
"Invalid class", JNI_FALSE); |
|
726 |
} |
|
727 |
||
728 |
oop module = java_lang_Class::module(mirror); |
|
729 |
||
730 |
assert(module != NULL, "java.lang.Class module field not set"); |
|
731 |
assert(java_lang_reflect_Module::is_subclass(module->klass()), "Module is not a java.lang.reflect.Module"); |
|
732 |
||
733 |
if (log_is_enabled(Debug, modules)) { |
|
734 |
ResourceMark rm(THREAD); |
|
37242 | 735 |
outputStream* logst = Log(modules)::debug_stream(); |
36508 | 736 |
Klass* klass = java_lang_Class::as_Klass(mirror); |
737 |
oop module_name = java_lang_reflect_Module::name(module); |
|
738 |
if (module_name != NULL) { |
|
739 |
logst->print("get_module(): module "); |
|
740 |
java_lang_String::print(module_name, tty); |
|
741 |
} else { |
|
742 |
logst->print("get_module(): Unamed Module"); |
|
743 |
} |
|
744 |
if (klass != NULL) { |
|
745 |
logst->print_cr(" for class %s", klass->external_name()); |
|
746 |
} else { |
|
747 |
logst->print_cr(" for primitive class"); |
|
748 |
} |
|
749 |
} |
|
750 |
||
751 |
return JNIHandles::make_local(THREAD, module); |
|
752 |
} |
|
753 |
||
754 |
||
755 |
jobject Modules::get_module_by_package_name(jobject loader, jstring package, TRAPS) { |
|
756 |
ResourceMark rm(THREAD); |
|
757 |
assert(ModuleEntryTable::javabase_defined(), |
|
758 |
"Attempt to call get_module_from_pkg before java.base is defined"); |
|
759 |
||
760 |
if (NULL == package) { |
|
761 |
THROW_MSG_(vmSymbols::java_lang_NullPointerException(), |
|
762 |
"package is null", JNI_FALSE); |
|
763 |
} |
|
764 |
const char* package_str = |
|
765 |
java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(package)); |
|
766 |
if (NULL == package_str) { |
|
767 |
THROW_MSG_(vmSymbols::java_lang_IllegalArgumentException(), |
|
768 |
"Invalid package", JNI_FALSE); |
|
769 |
} |
|
770 |
||
771 |
Handle h_loader (THREAD, JNIHandles::resolve(loader)); |
|
772 |
// Check that loader is a subclass of java.lang.ClassLoader. |
|
773 |
if (loader != NULL && !java_lang_ClassLoader::is_subclass(h_loader->klass())) { |
|
774 |
THROW_MSG_(vmSymbols::java_lang_IllegalArgumentException(), |
|
775 |
"Class loader is not a subclass of java.lang.ClassLoader", JNI_FALSE); |
|
776 |
} |
|
777 |
||
778 |
if (strlen(package_str) == 0) { |
|
779 |
// Return the unnamed module |
|
780 |
ModuleEntryTable* module_table = get_module_entry_table(h_loader, CHECK_NULL); |
|
781 |
if (NULL == module_table) return NULL; |
|
782 |
const ModuleEntry* const unnamed_module = module_table->unnamed_module(); |
|
783 |
return JNIHandles::make_local(THREAD, JNIHandles::resolve(unnamed_module->module())); |
|
784 |
||
785 |
} else { |
|
786 |
TempNewSymbol package_sym = SymbolTable::new_symbol(package_str, CHECK_NULL); |
|
787 |
return get_module(package_sym, h_loader, CHECK_NULL); |
|
788 |
} |
|
789 |
return NULL; |
|
790 |
} |
|
791 |
||
792 |
||
39706 | 793 |
jobject Modules::get_named_module(Handle h_loader, const char* package_str, TRAPS) { |
794 |
assert(ModuleEntryTable::javabase_defined(), |
|
795 |
"Attempt to call get_named_module before java.base is defined"); |
|
796 |
assert(h_loader.is_null() || java_lang_ClassLoader::is_subclass(h_loader->klass()), |
|
797 |
"Class loader is not a subclass of java.lang.ClassLoader"); |
|
798 |
assert(package_str != NULL, "the package_str should not be NULL"); |
|
799 |
||
800 |
if (strlen(package_str) == 0) { |
|
801 |
return NULL; |
|
802 |
} |
|
803 |
TempNewSymbol package_sym = SymbolTable::new_symbol(package_str, CHECK_NULL); |
|
804 |
const PackageEntry* const pkg_entry = |
|
805 |
get_package_entry_by_name(package_sym, h_loader, THREAD); |
|
806 |
const ModuleEntry* const module_entry = (pkg_entry != NULL ? pkg_entry->module() : NULL); |
|
807 |
||
808 |
if (module_entry != NULL && module_entry->module() != NULL && module_entry->is_named()) { |
|
809 |
return JNIHandles::make_local(THREAD, JNIHandles::resolve(module_entry->module())); |
|
810 |
} |
|
811 |
return NULL; |
|
812 |
} |
|
813 |
||
814 |
||
36508 | 815 |
// This method is called by JFR and by the above method. |
816 |
jobject Modules::get_module(Symbol* package_name, Handle h_loader, TRAPS) { |
|
817 |
const PackageEntry* const pkg_entry = |
|
818 |
get_package_entry_by_name(package_name, h_loader, THREAD); |
|
819 |
const ModuleEntry* const module_entry = (pkg_entry != NULL ? pkg_entry->module() : NULL); |
|
820 |
||
821 |
if (module_entry != NULL && |
|
822 |
module_entry->module() != NULL) { |
|
823 |
return JNIHandles::make_local(THREAD, JNIHandles::resolve(module_entry->module())); |
|
824 |
} |
|
825 |
||
826 |
return NULL; |
|
827 |
} |
|
828 |
||
829 |
void Modules::add_module_package(jobject module, jstring package, TRAPS) { |
|
830 |
ResourceMark rm(THREAD); |
|
831 |
||
832 |
if (module == NULL) { |
|
833 |
THROW_MSG(vmSymbols::java_lang_NullPointerException(), |
|
834 |
"module is null"); |
|
835 |
} |
|
836 |
if (package == NULL) { |
|
837 |
THROW_MSG(vmSymbols::java_lang_NullPointerException(), |
|
838 |
"package is null"); |
|
839 |
} |
|
840 |
ModuleEntry* module_entry = get_module_entry(module, CHECK); |
|
841 |
if (module_entry == NULL) { |
|
842 |
THROW_MSG(vmSymbols::java_lang_IllegalArgumentException(), |
|
843 |
"module is invalid"); |
|
844 |
} |
|
845 |
if (!module_entry->is_named()) { |
|
846 |
THROW_MSG(vmSymbols::java_lang_IllegalArgumentException(), |
|
847 |
"module cannot be an unnamed module"); |
|
848 |
} |
|
849 |
char *package_name = java_lang_String::as_utf8_string( |
|
850 |
JNIHandles::resolve_non_null(package)); |
|
851 |
if (package_name == NULL) { |
|
852 |
THROW_MSG(vmSymbols::java_lang_IllegalArgumentException(), "Bad package"); |
|
853 |
} |
|
854 |
if (!verify_package_name(package_name)) { |
|
855 |
THROW_MSG(vmSymbols::java_lang_IllegalArgumentException(), |
|
856 |
err_msg("Invalid package name: %s", package_name)); |
|
857 |
} |
|
858 |
||
859 |
log_debug(modules)("add_module_package(): Adding package %s to module %s", |
|
860 |
package_name, module_entry->name()->as_C_string()); |
|
861 |
||
862 |
TempNewSymbol pkg_symbol = SymbolTable::new_symbol(package_name, CHECK); |
|
39616
f82b1f888578
8159262: Walking PackageEntry Export and ModuleEntry Reads Must Occur Only When Neccessary And Wait Until ClassLoader's Aliveness Determined
lfoltan
parents:
39290
diff
changeset
|
863 |
PackageEntryTable* package_table = module_entry->loader_data()->packages(); |
36508 | 864 |
assert(package_table != NULL, "Missing package_table"); |
865 |
||
866 |
bool pkg_exists = false; |
|
867 |
{ |
|
868 |
MutexLocker ml(Module_lock, THREAD); |
|
869 |
||
870 |
// Check that the package does not exist in the class loader's package table. |
|
871 |
if (!package_table->lookup_only(pkg_symbol)) { |
|
872 |
PackageEntry* pkg = package_table->locked_create_entry_or_null(pkg_symbol, module_entry); |
|
873 |
assert(pkg != NULL, "Unable to create a module's package entry"); |
|
874 |
} else { |
|
875 |
pkg_exists = true; |
|
876 |
} |
|
877 |
} |
|
878 |
if (pkg_exists) { |
|
879 |
THROW_MSG(vmSymbols::java_lang_IllegalArgumentException(), |
|
880 |
err_msg("Package %s already exists for class loader", package_name)); |
|
881 |
} |
|
882 |
} |
|
883 |
||
884 |
// Export package in module to all unnamed modules. |
|
885 |
void Modules::add_module_exports_to_all_unnamed(jobject module, jstring package, TRAPS) { |
|
886 |
if (module == NULL) { |
|
887 |
THROW_MSG(vmSymbols::java_lang_NullPointerException(), |
|
888 |
"module is null"); |
|
889 |
} |
|
890 |
if (package == NULL) { |
|
891 |
THROW_MSG(vmSymbols::java_lang_NullPointerException(), |
|
892 |
"package is null"); |
|
893 |
} |
|
894 |
ModuleEntry* module_entry = get_module_entry(module, CHECK); |
|
895 |
if (module_entry == NULL) { |
|
896 |
THROW_MSG(vmSymbols::java_lang_IllegalArgumentException(), |
|
897 |
"module is invalid"); |
|
898 |
} |
|
899 |
||
900 |
if (module_entry->is_named()) { // No-op for unnamed module. |
|
901 |
PackageEntry *package_entry = get_package_entry(module_entry, package, CHECK); |
|
902 |
ResourceMark rm(THREAD); |
|
903 |
if (package_entry == NULL) { |
|
904 |
const char *package_name = java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(package)); |
|
905 |
THROW_MSG(vmSymbols::java_lang_IllegalArgumentException(), |
|
906 |
err_msg("Package %s not found in module %s", |
|
907 |
package_name != NULL ? package_name : "", |
|
908 |
module_entry->name()->as_C_string())); |
|
909 |
} |
|
910 |
if (package_entry->module() != module_entry) { |
|
911 |
THROW_MSG(vmSymbols::java_lang_IllegalArgumentException(), |
|
912 |
err_msg("Package: %s found in module %s, not in module: %s", |
|
913 |
package_entry->name()->as_C_string(), |
|
914 |
package_entry->module()->name()->as_C_string(), |
|
915 |
module_entry->name()->as_C_string())); |
|
916 |
} |
|
917 |
||
918 |
log_debug(modules)("add_module_exports_to_all_unnamed(): package %s in module" |
|
919 |
" %s is exported to all unnamed modules", |
|
920 |
package_entry->name()->as_C_string(), |
|
921 |
module_entry->name()->as_C_string()); |
|
922 |
||
923 |
// Mark package as exported to all unnamed modules, unless already |
|
924 |
// unqualifiedly exported. |
|
925 |
if (!package_entry->is_unqual_exported()) { |
|
926 |
package_entry->set_is_exported_allUnnamed(); |
|
927 |
} |
|
928 |
} |
|
929 |
} |