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 #include "runtime/timerTrace.hpp"
33
34 GrowableArray<AOTCodeHeap*>* AOTLoader::_heaps = new(ResourceObj::C_HEAP, mtCode) GrowableArray<AOTCodeHeap*> (2, true);
35 GrowableArray<AOTLib*>* AOTLoader::_libraries = new(ResourceObj::C_HEAP, mtCode) GrowableArray<AOTLib*> (2, true);
36
37 // Iterate over all AOT CodeHeaps
38 #define FOR_ALL_AOT_HEAPS(heap) for (GrowableArrayIterator<AOTCodeHeap*> heap = heaps()->begin(); heap != heaps()->end(); ++heap)
39 // Iterate over all AOT Libraries
40 #define FOR_ALL_AOT_LIBRARIES(lib) for (GrowableArrayIterator<AOTLib*> lib = libraries()->begin(); lib != libraries()->end(); ++lib)
41
42 void AOTLoader::load_for_klass(InstanceKlass* ik, Thread* thread) {
43 if (UseAOT) {
44 FOR_ALL_AOT_HEAPS(heap) {
45 (*heap)->load_klass_data(ik, thread);
46 }
47 }
48 }
49
50 uint64_t AOTLoader::get_saved_fingerprint(InstanceKlass* ik) {
51 FOR_ALL_AOT_HEAPS(heap) {
52 AOTKlassData* klass_data = (*heap)->find_klass(ik);
53 if (klass_data != NULL) {
54 return klass_data->_fingerprint;
55 }
56 }
57 return 0;
58 }
59
60 bool AOTLoader::find_klass(InstanceKlass* ik) {
61 FOR_ALL_AOT_HEAPS(heap) {
62 if ((*heap)->find_klass(ik) != NULL) {
63 return true;
64 }
65 }
66 return false;
67 }
68
69 bool AOTLoader::contains(address p) {
70 FOR_ALL_AOT_HEAPS(heap) {
71 if ((*heap)->contains(p)) {
72 return true;
73 }
74 }
75 return false;
76 }
77
78 void AOTLoader::oops_do(OopClosure* f) {
79 if (UseAOT) {
80 FOR_ALL_AOT_HEAPS(heap) {
81 (*heap)->oops_do(f);
82 }
83 }
84 }
85
86 void AOTLoader::metadata_do(void f(Metadata*)) {
87 if (UseAOT) {
88 FOR_ALL_AOT_HEAPS(heap) {
89 (*heap)->metadata_do(f);
90 }
91 }
92 }
93
94 // Flushing and deoptimization in case of evolution
95 void AOTLoader::flush_evol_dependents_on(InstanceKlass* dependee) {
96 // make non entrant and mark for deoptimization
97 FOR_ALL_AOT_HEAPS(heap) {
98 (*heap)->flush_evol_dependents_on(dependee);
99 }
100 Deoptimization::deoptimize_dependents();
101 }
102
103 /**
104 * List of core modules for which we search for shared libraries.
105 */
106 static const char* modules[] = {
107 "java.base",
108 "java.logging",
109 "jdk.compiler",
110 "jdk.scripting.nashorn",
111 "jdk.internal.vm.ci",
112 "jdk.internal.vm.compiler"
113 };
114
115 void AOTLoader::initialize() {
116 TraceTime timer("AOT initialization", TRACETIME_LOG(Info, aot, startuptime));
117
118 if (FLAG_IS_DEFAULT(UseAOT) && AOTLibrary != NULL) {
119 // Don't need to set UseAOT on command line when AOTLibrary is specified
120 FLAG_SET_DEFAULT(UseAOT, true);
121 }
122 if (UseAOT) {
123 // EagerInitialization is not compatible with AOT
124 if (EagerInitialization) {
125 if (PrintAOT) {
126 warning("EagerInitialization is not compatible with AOT (switching AOT off)");
127 }
128 FLAG_SET_DEFAULT(UseAOT, false);
129 return;
130 }
131
132 // -Xint is not compatible with AOT
133 if (Arguments::is_interpreter_only()) {
134 if (PrintAOT) {
135 warning("-Xint is not compatible with AOT (switching AOT off)");
136 }
137 FLAG_SET_DEFAULT(UseAOT, false);
138 return;
139 }
140
141 const char* home = Arguments::get_java_home();
142 const char* file_separator = os::file_separator();
143
144 for (int i = 0; i < (int) (sizeof(modules) / sizeof(const char*)); i++) {
145 char library[JVM_MAXPATHLEN];
146 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());
147 load_library(library, false);
148 }
149
150 // Scan the AOTLibrary option.
151 if (AOTLibrary != NULL) {
152 const int len = (int)strlen(AOTLibrary);
153 char* cp = NEW_C_HEAP_ARRAY(char, len+1, mtCode);
154 if (cp != NULL) { // No memory?
155 memcpy(cp, AOTLibrary, len);
156 cp[len] = '\0';
157 char* end = cp + len;
158 while (cp < end) {
159 const char* name = cp;
160 while ((*cp) != '\0' && (*cp) != '\n' && (*cp) != ',' && (*cp) != ':' && (*cp) != ';') cp++;
161 cp[0] = '\0'; // Terminate name
162 cp++;
163 load_library(name, true);
164 }
165 }
166 }
167 }
168 }
169
170 void AOTLoader::universe_init() {
171 if (UseAOT && libraries_count() > 0) {
172 // Shifts are static values which initialized by 0 until java heap initialization.
173 // AOT libs are loaded before heap initialized so shift values are not set.
174 // It is okay since ObjectAlignmentInBytes flag which defines shifts value is set before AOT libs are loaded.
175 // Set shifts value based on first AOT library config.
176 if (UseCompressedOops && AOTLib::narrow_oop_shift_initialized()) {
177 int oop_shift = Universe::narrow_oop_shift();
178 if (oop_shift == 0) {
179 Universe::set_narrow_oop_shift(AOTLib::narrow_oop_shift());
180 } else {
181 FOR_ALL_AOT_LIBRARIES(lib) {
182 (*lib)->verify_flag(AOTLib::narrow_oop_shift(), oop_shift, "Universe::narrow_oop_shift");
183 }
184 }
185 if (UseCompressedClassPointers) { // It is set only if UseCompressedOops is set
186 int klass_shift = Universe::narrow_klass_shift();
187 if (klass_shift == 0) {
188 Universe::set_narrow_klass_shift(AOTLib::narrow_klass_shift());
189 } else {
190 FOR_ALL_AOT_LIBRARIES(lib) {
191 (*lib)->verify_flag(AOTLib::narrow_klass_shift(), klass_shift, "Universe::narrow_klass_shift");
192 }
193 }
194 }
195 }
196 // Create heaps for all the libraries
197 FOR_ALL_AOT_LIBRARIES(lib) {
198 if ((*lib)->is_valid()) {
199 AOTCodeHeap* heap = new AOTCodeHeap(*lib);
200 {
201 MutexLockerEx mu(CodeCache_lock, Mutex::_no_safepoint_check_flag);
202 add_heap(heap);
203 CodeCache::add_heap(heap);
204 }
205 }
206 }
207 }
208 if (heaps_count() == 0) {
209 if (FLAG_IS_DEFAULT(UseAOT)) {
210 FLAG_SET_DEFAULT(UseAOT, false);
211 }
212 }
213 }
214
215 void AOTLoader::set_narrow_klass_shift() {
216 // This method could be called from Metaspace::set_narrow_klass_base_and_shift().
217 // In case it is not called (during dump CDS, for example) the corresponding code in
218 // AOTLoader::universe_init(), which is called later, will set the shift value.
219 if (UseAOT && libraries_count() > 0 &&
220 UseCompressedOops && AOTLib::narrow_oop_shift_initialized() &&
221 UseCompressedClassPointers) {
222 int klass_shift = Universe::narrow_klass_shift();
223 if (klass_shift == 0) {
224 Universe::set_narrow_klass_shift(AOTLib::narrow_klass_shift());
225 } else {
226 FOR_ALL_AOT_LIBRARIES(lib) {
227 (*lib)->verify_flag(AOTLib::narrow_klass_shift(), klass_shift, "Universe::narrow_klass_shift");
228 }
229 }
230 }
231 }
232
233 void AOTLoader::load_library(const char* name, bool exit_on_error) {
234 char ebuf[1024];
235 void* handle = os::dll_load(name, ebuf, sizeof ebuf);
236 if (handle == NULL) {
237 if (exit_on_error) {
238 tty->print_cr("error opening file: %s", ebuf);
239 vm_exit(1);
240 }
241 return;
242 }
243 const int dso_id = libraries_count() + 1;
244 AOTLib* lib = new AOTLib(handle, name, dso_id);
245 if (!lib->is_valid()) {
246 delete lib;
247 os::dll_unload(handle);
248 return;
249 }
250 add_library(lib);
251 }
252
253 #ifndef PRODUCT
254 void AOTLoader::print_statistics() {
255 { ttyLocker ttyl;
256 tty->print_cr("--- AOT Statistics ---");
257 tty->print_cr("AOT libraries loaded: %d", heaps_count());
258 AOTCodeHeap::print_statistics();
259 }
260 }
261 #endif