1 /*
2 * Copyright (c) 2016, 2017, 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 #include "precompiled.hpp"
25
26 #include "aot/aotCodeHeap.hpp"
27 #include "aot/aotLoader.inline.hpp"
28 #include "jvmci/jvmciRuntime.hpp"
29 #include "oops/method.hpp"
30 #include "runtime/os.hpp"
31
32 GrowableArray<AOTCodeHeap*>* AOTLoader::_heaps = new(ResourceObj::C_HEAP, mtCode) GrowableArray<AOTCodeHeap*> (2, true);
33 GrowableArray<AOTLib*>* AOTLoader::_libraries = new(ResourceObj::C_HEAP, mtCode) GrowableArray<AOTLib*> (2, true);
34
35 // Iterate over all AOT CodeHeaps
36 #define FOR_ALL_AOT_HEAPS(heap) for (GrowableArrayIterator<AOTCodeHeap*> heap = heaps()->begin(); heap != heaps()->end(); ++heap)
37 // Iterate over all AOT Libraries
38 #define FOR_ALL_AOT_LIBRARIES(lib) for (GrowableArrayIterator<AOTLib*> lib = libraries()->begin(); lib != libraries()->end(); ++lib)
39
40 void AOTLoader::load_for_klass(InstanceKlass* ik, Thread* thread) {
41 if (UseAOT) {
42 FOR_ALL_AOT_HEAPS(heap) {
43 (*heap)->load_klass_data(ik, thread);
44 }
45 }
46 }
47
48 uint64_t AOTLoader::get_saved_fingerprint(InstanceKlass* ik) {
49 FOR_ALL_AOT_HEAPS(heap) {
50 AOTKlassData* klass_data = (*heap)->find_klass(ik);
51 if (klass_data != NULL) {
52 return klass_data->_fingerprint;
53 }
54 }
55 return 0;
56 }
57
58 bool AOTLoader::find_klass(InstanceKlass* ik) {
59 FOR_ALL_AOT_HEAPS(heap) {
60 if ((*heap)->find_klass(ik) != NULL) {
61 return true;
62 }
63 }
64 return false;
65 }
66
67 bool AOTLoader::contains(address p) {
68 FOR_ALL_AOT_HEAPS(heap) {
69 if ((*heap)->contains(p)) {
70 return true;
71 }
72 }
73 return false;
74 }
75
76 void AOTLoader::oops_do(OopClosure* f) {
77 if (UseAOT) {
78 FOR_ALL_AOT_HEAPS(heap) {
79 (*heap)->oops_do(f);
80 }
81 }
82 }
83
84 void AOTLoader::metadata_do(void f(Metadata*)) {
85 if (UseAOT) {
86 FOR_ALL_AOT_HEAPS(heap) {
87 (*heap)->metadata_do(f);
88 }
89 }
90 }
91
92 // Flushing and deoptimization in case of evolution
93 void AOTLoader::flush_evol_dependents_on(InstanceKlass* dependee) {
94 // make non entrant and mark for deoptimization
95 FOR_ALL_AOT_HEAPS(heap) {
96 (*heap)->flush_evol_dependents_on(dependee);
97 }
98 Deoptimization::deoptimize_dependents();
99 }
100
101 /**
102 * List of core modules for which we search for shared libraries.
103 */
104 static const char* modules[] = {
105 "java.base",
106 "java.logging",
107 "jdk.compiler",
108 "jdk.scripting.nashorn",
109 "jdk.internal.vm.ci",
110 "jdk.internal.vm.compiler"
111 };
112
113 void AOTLoader::initialize() {
114 if (FLAG_IS_DEFAULT(UseAOT) && AOTLibrary != NULL) {
115 // Don't need to set UseAOT on command line when AOTLibrary is specified
116 FLAG_SET_DEFAULT(UseAOT, true);
117 }
118 if (UseAOT) {
119 // EagerInitialization is not compatible with AOT
120 if (EagerInitialization) {
121 if (PrintAOT) {
122 warning("EagerInitialization is not compatible with AOT (switching AOT off)");
123 }
124 FLAG_SET_DEFAULT(UseAOT, false);
125 return;
126 }
127
128 // -Xint is not compatible with AOT
129 if (Arguments::is_interpreter_only()) {
130 if (PrintAOT) {
131 warning("-Xint is not compatible with AOT (switching AOT off)");
132 }
133 FLAG_SET_DEFAULT(UseAOT, false);
134 return;
135 }
136
137 const char* home = Arguments::get_java_home();
138 const char* file_separator = os::file_separator();
139
140 for (int i = 0; i < (int) (sizeof(modules) / sizeof(const char*)); i++) {
141 char library[JVM_MAXPATHLEN];
142 jio_snprintf(library, sizeof(library), "%s%slib%slib%s%s%s%s", home, file_separator, file_separator, modules[i], UseCompressedOops ? "-coop" : "", UseG1GC ? "" : "-nong1", os::dll_file_extension());
143 load_library(library, false);
144 }
145
146 // Scan the AOTLibrary option.
147 if (AOTLibrary != NULL) {
148 const int len = (int)strlen(AOTLibrary);
149 char* cp = NEW_C_HEAP_ARRAY(char, len+1, mtCode);
150 if (cp != NULL) { // No memory?
151 memcpy(cp, AOTLibrary, len);
152 cp[len] = '\0';
153 char* end = cp + len;
154 while (cp < end) {
155 const char* name = cp;
156 while ((*cp) != '\0' && (*cp) != '\n' && (*cp) != ',' && (*cp) != ':' && (*cp) != ';') cp++;
157 cp[0] = '\0'; // Terminate name
158 cp++;
159 load_library(name, true);
160 }
161 }
162 }
163 }
164 }
165
166 void AOTLoader::universe_init() {
167 if (UseAOT && libraries_count() > 0) {
168 // Shifts are static values which initialized by 0 until java heap initialization.
169 // AOT libs are loaded before heap initialized so shift values are not set.
170 // It is okay since ObjectAlignmentInBytes flag which defines shifts value is set before AOT libs are loaded.
171 // Set shifts value based on first AOT library config.
172 if (UseCompressedOops && AOTLib::narrow_oop_shift_initialized()) {
173 int oop_shift = Universe::narrow_oop_shift();
174 if (oop_shift == 0) {
175 Universe::set_narrow_oop_shift(AOTLib::narrow_oop_shift());
176 } else {
177 FOR_ALL_AOT_LIBRARIES(lib) {
178 (*lib)->verify_flag(AOTLib::narrow_oop_shift(), oop_shift, "Universe::narrow_oop_shift");
179 }
180 }
181 if (UseCompressedClassPointers) { // It is set only if UseCompressedOops is set
182 int klass_shift = Universe::narrow_klass_shift();
183 if (klass_shift == 0) {
184 Universe::set_narrow_klass_shift(AOTLib::narrow_klass_shift());
185 } else {
186 FOR_ALL_AOT_LIBRARIES(lib) {
187 (*lib)->verify_flag(AOTLib::narrow_klass_shift(), klass_shift, "Universe::narrow_klass_shift");
188 }
189 }
190 }
191 }
192 // Create heaps for all the libraries
193 FOR_ALL_AOT_LIBRARIES(lib) {
194 if ((*lib)->is_valid()) {
195 AOTCodeHeap* heap = new AOTCodeHeap(*lib);
196 {
197 MutexLockerEx mu(CodeCache_lock, Mutex::_no_safepoint_check_flag);
198 add_heap(heap);
199 CodeCache::add_heap(heap);
200 }
201 }
202 }
203 }
204 if (heaps_count() == 0) {
205 if (FLAG_IS_DEFAULT(UseAOT)) {
206 FLAG_SET_DEFAULT(UseAOT, false);
207 }
208 }
209 }
210
211 void AOTLoader::set_narrow_klass_shift() {
212 // This method could be called from Metaspace::set_narrow_klass_base_and_shift().
213 // In case it is not called (during dump CDS, for example) the corresponding code in
214 // AOTLoader::universe_init(), which is called later, will set the shift value.
215 if (UseAOT && libraries_count() > 0 &&
216 UseCompressedOops && AOTLib::narrow_oop_shift_initialized() &&
217 UseCompressedClassPointers) {
218 int klass_shift = Universe::narrow_klass_shift();
219 if (klass_shift == 0) {
220 Universe::set_narrow_klass_shift(AOTLib::narrow_klass_shift());
221 } else {
222 FOR_ALL_AOT_LIBRARIES(lib) {
223 (*lib)->verify_flag(AOTLib::narrow_klass_shift(), klass_shift, "Universe::narrow_klass_shift");
224 }
225 }
226 }
227 }
228
229 void AOTLoader::load_library(const char* name, bool exit_on_error) {
230 char ebuf[1024];
231 void* handle = os::dll_load(name, ebuf, sizeof ebuf);
232 if (handle == NULL) {
233 if (exit_on_error) {
234 tty->print_cr("error opening file: %s", ebuf);
235 vm_exit(1);
236 }
237 return;
238 }
239 const int dso_id = libraries_count() + 1;
240 AOTLib* lib = new AOTLib(handle, name, dso_id);
241 if (!lib->is_valid()) {
242 delete lib;
243 os::dll_unload(handle);
244 return;
245 }
246 add_library(lib);
247 }
248
249 #ifndef PRODUCT
250 void AOTLoader::print_statistics() {
251 { ttyLocker ttyl;
252 tty->print_cr("--- AOT Statistics ---");
253 tty->print_cr("AOT libraries loaded: %d", heaps_count());
254 AOTCodeHeap::print_statistics();
255 }
256 }
257 #endif