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 (ik->is_anonymous()) { 44 // don't even bother 45 return; 46 } 47 if (UseAOT) { 48 FOR_ALL_AOT_HEAPS(heap) { 49 (*heap)->load_klass_data(ik, thread); 50 } 51 } 52 } 53 54 uint64_t AOTLoader::get_saved_fingerprint(InstanceKlass* ik) { 55 if (ik->is_anonymous()) { 56 // don't even bother 57 return 0; 58 } 59 FOR_ALL_AOT_HEAPS(heap) { 60 AOTKlassData* klass_data = (*heap)->find_klass(ik); 61 if (klass_data != NULL) { 62 return klass_data->_fingerprint; 63 } 64 } 65 return 0; 66 } 67 68 bool AOTLoader::find_klass(InstanceKlass* ik) { 69 FOR_ALL_AOT_HEAPS(heap) { 70 if ((*heap)->find_klass(ik) != NULL) { 71 return true; 72 } 73 } 74 return false; 75 } 76 77 bool AOTLoader::contains(address p) { 78 FOR_ALL_AOT_HEAPS(heap) { 79 if ((*heap)->contains(p)) { 80 return true; 81 } 82 } 83 return false; 84 } 85 86 void AOTLoader::oops_do(OopClosure* f) { 87 if (UseAOT) { 88 FOR_ALL_AOT_HEAPS(heap) { 89 (*heap)->oops_do(f); 90 } 91 } 92 } 93 94 void AOTLoader::metadata_do(void f(Metadata*)) { 95 if (UseAOT) { 96 FOR_ALL_AOT_HEAPS(heap) { 97 (*heap)->metadata_do(f); 98 } 99 } 100 } 101 102 // Flushing and deoptimization in case of evolution 103 void AOTLoader::flush_evol_dependents_on(InstanceKlass* dependee) { 104 // make non entrant and mark for deoptimization 105 FOR_ALL_AOT_HEAPS(heap) { 106 (*heap)->flush_evol_dependents_on(dependee); 107 } 108 Deoptimization::deoptimize_dependents(); 109 } 110 111 /** 112 * List of core modules for which we search for shared libraries. 113 */ 114 static const char* modules[] = { 115 "java.base", 116 "java.logging", 117 "jdk.compiler", 118 "jdk.scripting.nashorn", 119 "jdk.internal.vm.ci", 120 "jdk.internal.vm.compiler" 121 }; 122 123 void AOTLoader::initialize() { 124 TraceTime timer("AOT initialization", TRACETIME_LOG(Info, aot, startuptime)); 125 126 if (FLAG_IS_DEFAULT(UseAOT) && AOTLibrary != NULL) { 127 // Don't need to set UseAOT on command line when AOTLibrary is specified 128 FLAG_SET_DEFAULT(UseAOT, true); 129 } 130 if (UseAOT) { 131 // EagerInitialization is not compatible with AOT 132 if (EagerInitialization) { 133 if (PrintAOT) { 134 warning("EagerInitialization is not compatible with AOT (switching AOT off)"); 135 } 136 FLAG_SET_DEFAULT(UseAOT, false); 137 return; 138 } 139 140 // -Xint is not compatible with AOT 141 if (Arguments::is_interpreter_only()) { 142 if (PrintAOT) { 143 warning("-Xint is not compatible with AOT (switching AOT off)"); 144 } 145 FLAG_SET_DEFAULT(UseAOT, false); 146 return; 147 } 148 149 const char* home = Arguments::get_java_home(); 150 const char* file_separator = os::file_separator(); 151 152 for (int i = 0; i < (int) (sizeof(modules) / sizeof(const char*)); i++) { 153 char library[JVM_MAXPATHLEN]; 154 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()); 155 load_library(library, false); 156 } 157 158 // Scan the AOTLibrary option. 159 if (AOTLibrary != NULL) { 160 const int len = (int)strlen(AOTLibrary); 161 char* cp = NEW_C_HEAP_ARRAY(char, len+1, mtCode); 162 if (cp != NULL) { // No memory? 163 memcpy(cp, AOTLibrary, len); 164 cp[len] = '\0'; 165 char* end = cp + len; 166 while (cp < end) { 167 const char* name = cp; 168 while ((*cp) != '\0' && (*cp) != '\n' && (*cp) != ',' && (*cp) != ':' && (*cp) != ';') cp++; 169 cp[0] = '\0'; // Terminate name 170 cp++; 171 load_library(name, true); 172 } 173 } 174 } 175 } 176 } 177 178 void AOTLoader::universe_init() { 179 if (UseAOT && libraries_count() > 0) { 180 // Shifts are static values which initialized by 0 until java heap initialization. 181 // AOT libs are loaded before heap initialized so shift values are not set. 182 // It is okay since ObjectAlignmentInBytes flag which defines shifts value is set before AOT libs are loaded. 183 // Set shifts value based on first AOT library config. 184 if (UseCompressedOops && AOTLib::narrow_oop_shift_initialized()) { 185 int oop_shift = Universe::narrow_oop_shift(); 186 if (oop_shift == 0) { 187 Universe::set_narrow_oop_shift(AOTLib::narrow_oop_shift()); 188 } else { 189 FOR_ALL_AOT_LIBRARIES(lib) { 190 (*lib)->verify_flag(AOTLib::narrow_oop_shift(), oop_shift, "Universe::narrow_oop_shift"); 191 } 192 } 193 if (UseCompressedClassPointers) { // It is set only if UseCompressedOops is set 194 int klass_shift = Universe::narrow_klass_shift(); 195 if (klass_shift == 0) { 196 Universe::set_narrow_klass_shift(AOTLib::narrow_klass_shift()); 197 } else { 198 FOR_ALL_AOT_LIBRARIES(lib) { 199 (*lib)->verify_flag(AOTLib::narrow_klass_shift(), klass_shift, "Universe::narrow_klass_shift"); 200 } 201 } 202 } 203 } 204 // Create heaps for all the libraries 205 FOR_ALL_AOT_LIBRARIES(lib) { 206 if ((*lib)->is_valid()) { 207 AOTCodeHeap* heap = new AOTCodeHeap(*lib); 208 { 209 MutexLockerEx mu(CodeCache_lock, Mutex::_no_safepoint_check_flag); 210 add_heap(heap); 211 CodeCache::add_heap(heap); 212 } 213 } 214 } 215 } 216 if (heaps_count() == 0) { 217 if (FLAG_IS_DEFAULT(UseAOT)) { 218 FLAG_SET_DEFAULT(UseAOT, false); 219 } 220 } 221 } 222 223 void AOTLoader::set_narrow_klass_shift() { 224 // This method could be called from Metaspace::set_narrow_klass_base_and_shift(). 225 // In case it is not called (during dump CDS, for example) the corresponding code in 226 // AOTLoader::universe_init(), which is called later, will set the shift value. 227 if (UseAOT && libraries_count() > 0 && 228 UseCompressedOops && AOTLib::narrow_oop_shift_initialized() && 229 UseCompressedClassPointers) { 230 int klass_shift = Universe::narrow_klass_shift(); 231 if (klass_shift == 0) { 232 Universe::set_narrow_klass_shift(AOTLib::narrow_klass_shift()); 233 } else { 234 FOR_ALL_AOT_LIBRARIES(lib) { 235 (*lib)->verify_flag(AOTLib::narrow_klass_shift(), klass_shift, "Universe::narrow_klass_shift"); 236 } 237 } 238 } 239 } 240 241 void AOTLoader::load_library(const char* name, bool exit_on_error) { 242 char ebuf[1024]; 243 void* handle = os::dll_load(name, ebuf, sizeof ebuf); 244 if (handle == NULL) { 245 if (exit_on_error) { 246 tty->print_cr("error opening file: %s", ebuf); 247 vm_exit(1); 248 } 249 return; 250 } 251 const int dso_id = libraries_count() + 1; 252 AOTLib* lib = new AOTLib(handle, name, dso_id); 253 if (!lib->is_valid()) { 254 delete lib; 255 os::dll_unload(handle); 256 return; 257 } 258 add_library(lib); 259 } 260 261 #ifndef PRODUCT 262 void AOTLoader::print_statistics() { 263 { ttyLocker ttyl; 264 tty->print_cr("--- AOT Statistics ---"); 265 tty->print_cr("AOT libraries loaded: %d", heaps_count()); 266 AOTCodeHeap::print_statistics(); 267 } 268 } 269 #endif 270 271 272 bool AOTLoader::reconcile_dynamic_invoke(InstanceKlass* holder, int index, Method* adapter_method, Klass* appendix_klass) { 273 if (!UseAOT) { 274 return true; 275 } 276 JavaThread* thread = JavaThread::current(); 277 ResourceMark rm(thread); 278 RegisterMap map(thread, false); 279 frame caller_frame = thread->last_frame().sender(&map); // Skip stub 280 CodeBlob* caller_cb = caller_frame.cb(); 281 guarantee(caller_cb != NULL && caller_cb->is_compiled(), "must be called from compiled method"); 282 CompiledMethod* cm = caller_cb->as_compiled_method(); 283 284 if (!cm->is_aot()) { 285 return true; 286 } 287 AOTCompiledMethod* aot = (AOTCompiledMethod*)cm; 288 289 AOTCodeHeap* caller_heap = NULL; 290 FOR_ALL_AOT_HEAPS(heap) { 291 if ((*heap)->contains_blob(aot)) { 292 caller_heap = *heap; 293 break; 294 } 295 } 296 guarantee(caller_heap != NULL, "CodeHeap not found"); 297 bool success = caller_heap->reconcile_dynamic_invoke(aot, holder, index, adapter_method, appendix_klass); 298 vmassert(success || thread->last_frame().sender(&map).is_deoptimized_frame(), "caller not deoptimized on failure"); 299 return success; 300 }