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(instanceKlassHandle kh, Thread* thread) {
41 if (UseAOT) {
42 FOR_ALL_AOT_HEAPS(heap) {
43 (*heap)->load_klass_data(kh, 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 address AOTLoader::exception_begin(JavaThread* thread, CodeBlob* blob, address return_address) {
93 assert(blob->is_aot(), "sanity");
94 AOTCompiledMethod* aotm = (AOTCompiledMethod*)blob;
95 // Set flag if return address is a method handle call site.
96 thread->set_is_method_handle_return(aotm->is_method_handle_return(return_address));
97 return aotm->exception_begin();
98 }
99
100 // Flushing and deoptimization in case of evolution
101 void AOTLoader::flush_evol_dependents_on(instanceKlassHandle dependee) {
102 // make non entrant and mark for deoptimization
103 FOR_ALL_AOT_HEAPS(heap) {
104 (*heap)->flush_evol_dependents_on(dependee);
105 }
106 Deoptimization::deoptimize_dependents();
107 }
108
109 /**
110 * List of core modules for which we search for shared libraries.
111 */
112 static const char* modules[] = {
113 "java.base",
114 "java.logging",
115 "jdk.compiler",
116 "jdk.scripting.nashorn",
117 "jdk.vm.ci",
118 "jdk.vm.compiler"
119 };
120
121 void AOTLoader::initialize() {
122 if (FLAG_IS_DEFAULT(UseAOT) && AOTLibrary != NULL) {
123 // Don't need to set UseAOT on command line when AOTLibrary is specified
124 FLAG_SET_DEFAULT(UseAOT, true);
125 }
126 if (UseAOT) {
127 // EagerInitialization is not compatible with AOT
128 if (EagerInitialization) {
129 if (PrintAOT) {
130 warning("EagerInitialization is not compatible with AOT (switching AOT off)");
131 }
132 FLAG_SET_DEFAULT(UseAOT, false);
133 return;
134 }
135
136 // -Xint is not compatible with AOT
137 if (Arguments::is_interpreter_only()) {
138 if (PrintAOT) {
139 warning("-Xint is not compatible with AOT (switching AOT off)");
140 }
141 FLAG_SET_DEFAULT(UseAOT, false);
142 return;
143 }
144
145 const char* home = Arguments::get_java_home();
146 const char* file_separator = os::file_separator();
147
148 for (int i = 0; i < (int) (sizeof(modules) / sizeof(const char*)); i++) {
149 char library[JVM_MAXPATHLEN];
150 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());
151 load_library(library, false);
152 }
153
154 // Scan the AOTLibrary option.
155 if (AOTLibrary != NULL) {
156 const int len = (int)strlen(AOTLibrary);
157 char* cp = NEW_C_HEAP_ARRAY(char, len+1, mtCode);
158 if (cp != NULL) { // No memory?
159 memcpy(cp, AOTLibrary, len);
160 cp[len] = '\0';
161 char* end = cp + len;
162 while (cp < end) {
163 const char* name = cp;
164 while ((*cp) != '\0' && (*cp) != '\n' && (*cp) != ',' && (*cp) != ':' && (*cp) != ';') cp++;
165 cp[0] = '\0'; // Terminate name
166 cp++;
167 load_library(name, true);
168 }
169 }
170 }
171 }
172 }
173
174 void AOTLoader::universe_init() {
175 if (UseAOT && libraries_count() > 0) {
176 // Shifts are static values which initialized by 0 until java heap initialization.
177 // AOT libs are loaded before heap initialized so shift values are not set.
178 // It is okay since ObjectAlignmentInBytes flag which defines shifts value is set before AOT libs are loaded.
179 // Set shifts value based on first AOT library config.
180 if (UseCompressedOops && AOTLib::narrow_oop_shift_initialized()) {
181 int oop_shift = Universe::narrow_oop_shift();
182 if (oop_shift == 0) {
183 Universe::set_narrow_oop_shift(AOTLib::narrow_oop_shift());
184 } else {
185 FOR_ALL_AOT_LIBRARIES(lib) {
186 (*lib)->verify_flag(AOTLib::narrow_oop_shift(), oop_shift, "Universe::narrow_oop_shift");
187 }
188 }
189 if (UseCompressedClassPointers) { // It is set only if UseCompressedOops is set
190 int klass_shift = Universe::narrow_klass_shift();
191 if (klass_shift == 0) {
192 Universe::set_narrow_klass_shift(AOTLib::narrow_klass_shift());
193 } else {
194 FOR_ALL_AOT_LIBRARIES(lib) {
195 (*lib)->verify_flag(AOTLib::narrow_klass_shift(), klass_shift, "Universe::narrow_klass_shift");
196 }
197 }
198 }
199 }
200 // Create heaps for all the libraries
201 FOR_ALL_AOT_LIBRARIES(lib) {
202 if ((*lib)->is_valid()) {
203 AOTCodeHeap* heap = new AOTCodeHeap(*lib);
204 {
205 MutexLockerEx mu(CodeCache_lock, Mutex::_no_safepoint_check_flag);
206 add_heap(heap);
207 CodeCache::add_heap(heap);
208 }
209 }
210 }
211 }
212 if (heaps_count() == 0) {
213 if (FLAG_IS_DEFAULT(UseAOT)) {
214 FLAG_SET_DEFAULT(UseAOT, false);
215 }
216 }
217 }
218
219 void AOTLoader::set_narrow_klass_shift() {
220 // This method could be called from Metaspace::set_narrow_klass_base_and_shift().
221 // In case it is not called (during dump CDS, for example) the corresponding code in
222 // AOTLoader::universe_init(), which is called later, will set the shift value.
223 if (UseAOT && libraries_count() > 0 &&
224 UseCompressedOops && AOTLib::narrow_oop_shift_initialized() &&
225 UseCompressedClassPointers) {
226 int klass_shift = Universe::narrow_klass_shift();
227 if (klass_shift == 0) {
228 Universe::set_narrow_klass_shift(AOTLib::narrow_klass_shift());
229 } else {
230 FOR_ALL_AOT_LIBRARIES(lib) {
231 (*lib)->verify_flag(AOTLib::narrow_klass_shift(), klass_shift, "Universe::narrow_klass_shift");
232 }
233 }
234 }
235 }
236
237 void AOTLoader::load_library(const char* name, bool exit_on_error) {
238 char ebuf[1024];
239 void* handle = os::dll_load(name, ebuf, sizeof ebuf);
240 if (handle == NULL) {
241 if (exit_on_error) {
242 tty->print_cr("error opening file: %s", ebuf);
243 vm_exit(1);
244 }
245 return;
246 }
247 const int dso_id = libraries_count() + 1;
248 AOTLib* lib = new AOTLib(handle, name, dso_id);
249 if (!lib->is_valid()) {
250 delete lib;
251 os::dll_unload(handle);
252 return;
253 }
254 add_library(lib);
255 }
256
257 #ifndef PRODUCT
258 void AOTLoader::print_statistics() {
259 { ttyLocker ttyl;
260 tty->print_cr("--- AOT Statistics ---");
261 tty->print_cr("AOT libraries loaded: %d", heaps_count());
262 AOTCodeHeap::print_statistics();
263 }
264 }
265 #endif