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