1 /* 2 * Copyright (c) 2016, 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 31 GrowableArray<AOTCodeHeap*>* AOTLoader::_heaps = new(ResourceObj::C_HEAP, mtCode) GrowableArray<AOTCodeHeap*> (2, true); 32 33 // Iterate over all AOT CodeHeaps 34 #define FOR_ALL_AOT_HEAPS(heap) for (GrowableArrayIterator<AOTCodeHeap*> heap = heaps()->begin(); heap != heaps()->end(); ++heap) 35 36 void AOTLoader::load_for_klass(instanceKlassHandle kh, Thread* thread) { 37 if (UseAOT) { 38 FOR_ALL_AOT_HEAPS(heap) { 39 (*heap)->load_klass_data(kh, thread); 40 } 41 } 42 } 43 44 uint64_t AOTLoader::get_saved_fingerprint(InstanceKlass* ik) { 45 FOR_ALL_AOT_HEAPS(heap) { 46 AOTKlassData* klass_data = (*heap)->find_klass(ik); 47 if (klass_data != NULL) { 48 return klass_data->_fingerprint; 49 } 50 } 51 return 0; 52 } 53 54 bool AOTLoader::find_klass(InstanceKlass* ik) { 55 FOR_ALL_AOT_HEAPS(heap) { 56 if ((*heap)->find_klass(ik) != NULL) { 57 return true; 58 } 59 } 60 return false; 61 } 62 63 bool AOTLoader::contains(address p) { 64 FOR_ALL_AOT_HEAPS(heap) { 65 if ((*heap)->contains(p)) { 66 return true; 67 } 68 } 69 return false; 70 } 71 72 void AOTLoader::oops_do(OopClosure* f) { 73 if (UseAOT) { 74 FOR_ALL_AOT_HEAPS(heap) { 75 (*heap)->oops_do(f); 76 } 77 } 78 } 79 80 void AOTLoader::metadata_do(void f(Metadata*)) { 81 if (UseAOT) { 82 FOR_ALL_AOT_HEAPS(heap) { 83 (*heap)->metadata_do(f); 84 } 85 } 86 } 87 88 address AOTLoader::exception_begin(JavaThread* thread, CodeBlob* blob, address return_address) { 89 assert(blob->is_aot(), "sanity"); 90 AOTCompiledMethod* aotm = (AOTCompiledMethod*)blob; 91 // Set flag if return address is a method handle call site. 92 thread->set_is_method_handle_return(aotm->is_method_handle_return(return_address)); 93 return aotm->exception_begin(); 94 } 95 96 // Flushing and deoptimization in case of evolution 97 void AOTLoader::flush_evol_dependents_on(instanceKlassHandle dependee) { 98 // make non entrant and mark for deoptimization 99 FOR_ALL_AOT_HEAPS(heap) { 100 (*heap)->flush_evol_dependents_on(dependee); 101 } 102 Deoptimization::deoptimize_dependents(); 103 } 104 105 /** 106 * List of core modules for which we search for shared libraries. 107 */ 108 static const char* modules[] = { 109 "java.base", 110 "java.logging", 111 "jdk.compiler", 112 "jdk.scripting.nashorn", 113 "jdk.vm.ci", 114 "jdk.vm.compiler" 115 }; 116 117 void AOTLoader::initialize() { 118 // Probe if we have libraries for core modules and load them if available. 119 bool libraries_found = false; 120 121 if (FLAG_IS_DEFAULT(UseAOT) && AOTLibrary != NULL) { 122 // Don't need to set UseAOT on command line when AOTLibrary is specified 123 FLAG_SET_DEFAULT(UseAOT, true); 124 } 125 if (UseAOT) { 126 // EagerInitialization is not compatible with AOT 127 if (EagerInitialization) { 128 warning("EagerInitialization is not compatible with AOT (switching AOT off)"); 129 FLAG_SET_DEFAULT(UseAOT, false); 130 return; 131 } 132 133 // -Xint is not compatible with AOT 134 if (Arguments::is_interpreter_only()) { 135 warning("-Xint is not compatible with AOT (switching AOT off)"); 136 FLAG_SET_DEFAULT(UseAOT, false); 137 return; 138 } 139 140 const char* home = Arguments::get_java_home(); 141 const char* file_separator = os::file_separator(); 142 143 for (int i = 0; i < (int) (sizeof(modules) / sizeof(const char*)); i++) { 144 char library[JVM_MAXPATHLEN]; 145 jio_snprintf(library, sizeof(library), "%s%slib%slib%s%s%s.so", home, file_separator, file_separator, modules[i], UseCompressedOops ? "-coop" : "", UseG1GC ? "" : "-nong1"); 146 bool found = load_library(library, false); 147 if (found) { 148 libraries_found = true; 149 } 150 } 151 152 // Scan the AOTLibrary option. 153 if (AOTLibrary != NULL) { 154 const int len = strlen(AOTLibrary); 155 char* cp = NEW_C_HEAP_ARRAY(char, len+1, mtCode); 156 memcpy(cp, AOTLibrary, len); 157 cp[len] = '\0'; 158 char* end = cp + len; 159 while (cp < end) { 160 const char* name = cp; 161 while ((*cp) != '\0' && (*cp) != '\n' && (*cp) != ',' && (*cp) != ':' && (*cp) != ';') cp++; 162 cp[0] = '\0'; // Terminate name 163 cp++; 164 bool found = load_library(name, true); 165 if (found) { 166 libraries_found = true; 167 } 168 } 169 } 170 171 // If we didn't find a library we are turning AOT off, if not requested otherwise. 172 if (!libraries_found) { 173 if (FLAG_IS_DEFAULT(UseAOT)) { 174 FLAG_SET_DEFAULT(UseAOT, false); 175 } 176 } 177 } 178 } 179 180 void AOTLoader::universe_init() { 181 if (UseAOT && heaps_count() > 0) { 182 // Shifts are static values which initialized by 0 until java heap initialization. 183 // AOT libs are loaded before heap initialized so shift values are not set. 184 // It is okay since ObjectAlignmentInBytes flag which defines shifts value is set before AOT libs are loaded. 185 // Set shifts value based on first AOT library config. 186 if (UseCompressedOops && AOTCodeHeap::narrow_oop_shift_initialized()) { 187 int oop_shift = Universe::narrow_oop_shift(); 188 if (oop_shift == 0) { 189 Universe::set_narrow_oop_shift(AOTCodeHeap::narrow_oop_shift()); 190 } else { 191 FOR_ALL_AOT_HEAPS(heap) { 192 (*heap)->verify_flag(AOTCodeHeap::narrow_oop_shift(), oop_shift, "Universe::narrow_oop_shift"); 193 } 194 } 195 if (UseCompressedClassPointers) { // It is set only if UseCompressedOops is set 196 int klass_shift = Universe::narrow_klass_shift(); 197 if (klass_shift == 0) { 198 Universe::set_narrow_klass_shift(AOTCodeHeap::narrow_klass_shift()); 199 } else { 200 FOR_ALL_AOT_HEAPS(heap) { 201 (*heap)->verify_flag(AOTCodeHeap::narrow_klass_shift(), klass_shift, "Universe::narrow_klass_shift"); 202 } 203 } 204 } 205 } 206 } 207 } 208 209 void AOTLoader::set_narrow_klass_shift() { 210 // This method could be called from Metaspace::set_narrow_klass_base_and_shift(). 211 // In case it is not called (during dump CDS, for example) the corresponding code in 212 // AOTLoader::universe_init(), which is called later, will set the shift value. 213 if (UseAOT && heaps_count() > 0 && 214 UseCompressedOops && AOTCodeHeap::narrow_oop_shift_initialized() && 215 UseCompressedClassPointers) { 216 int klass_shift = Universe::narrow_klass_shift(); 217 if (klass_shift == 0) { 218 Universe::set_narrow_klass_shift(AOTCodeHeap::narrow_klass_shift()); 219 } else { 220 FOR_ALL_AOT_HEAPS(heap) { 221 (*heap)->verify_flag(AOTCodeHeap::narrow_klass_shift(), klass_shift, "Universe::narrow_klass_shift"); 222 } 223 } 224 } 225 } 226 227 bool AOTLoader::load_library(const char* name, bool exit_on_error) { 228 void* handle = dlopen(name, RTLD_LAZY); 229 if (handle == NULL) { 230 if (exit_on_error) { 231 tty->print_cr("error opening file: %s", dlerror()); 232 vm_exit(1); 233 } 234 return false; 235 } 236 const int dso_id = heaps_count() + 1; 237 AOTCodeHeap* heap = new AOTCodeHeap(handle, name, dso_id); 238 if (!heap->is_valid()) { 239 delete heap; 240 dlclose(handle); 241 return false; 242 } 243 { 244 MutexLockerEx mu(CodeCache_lock, Mutex::_no_safepoint_check_flag); 245 add_heap(heap); 246 CodeCache::add_heap(heap); 247 } 248 return true; 249 } 250 251 #ifndef PRODUCT 252 void AOTLoader::print_statistics() { 253 { ttyLocker ttyl; 254 tty->print_cr("--- AOT Statistics ---"); 255 tty->print_cr("AOT libraries loaded: %d", heaps_count()); 256 AOTCodeHeap::print_statistics(); 257 } 258 } 259 #endif