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src/hotspot/share/cds/lambdaFormInvokers.cpp

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  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 
 25 #include "precompiled.hpp"
 26 #include "cds/archiveBuilder.hpp"

 27 #include "cds/lambdaFormInvokers.hpp"
 28 #include "cds/metaspaceShared.hpp"
 29 #include "cds/regeneratedClasses.hpp"
 30 #include "classfile/classLoadInfo.hpp"
 31 #include "classfile/classFileStream.hpp"
 32 #include "classfile/javaClasses.inline.hpp"
 33 #include "classfile/klassFactory.hpp"
 34 #include "classfile/symbolTable.hpp"
 35 #include "classfile/systemDictionary.hpp"
 36 #include "classfile/systemDictionaryShared.hpp"
 37 #include "classfile/vmClasses.hpp"
 38 #include "classfile/vmSymbols.hpp"
 39 #include "logging/log.hpp"
 40 #include "memory/oopFactory.hpp"
 41 #include "memory/resourceArea.hpp"
 42 #include "oops/instanceKlass.hpp"
 43 #include "oops/klass.inline.hpp"
 44 #include "oops/objArrayKlass.hpp"
 45 #include "oops/objArrayOop.hpp"
 46 #include "oops/oop.inline.hpp"

 73   MutexLocker ml(Thread::current(), LambdaFormInvokers_lock);
 74   if (_lambdaform_lines == nullptr) {
 75     _lambdaform_lines = new GrowableArrayCHeap<char*, mtClassShared>(150);
 76   }
 77   _lambdaform_lines->append(line);
 78 }
 79 
 80 
 81 // convenient output
 82 class PrintLambdaFormMessage {
 83  public:
 84   PrintLambdaFormMessage() {
 85     log_info(cds)("Regenerate MethodHandle Holder classes...");
 86   }
 87   ~PrintLambdaFormMessage() {
 88     log_info(cds)("Regenerate MethodHandle Holder classes...done");
 89   }
 90 };
 91 
 92 void LambdaFormInvokers::regenerate_holder_classes(TRAPS) {



 93   PrintLambdaFormMessage plm;
 94   if (_lambdaform_lines == nullptr || _lambdaform_lines->length() == 0) {
 95     log_info(cds)("Nothing to regenerate for holder classes");
 96     return;
 97   }
 98 
 99   ResourceMark rm(THREAD);
100 
101   Symbol* cds_name  = vmSymbols::jdk_internal_misc_CDS();
102   Klass*  cds_klass = SystemDictionary::resolve_or_null(cds_name, THREAD);
103   guarantee(cds_klass != nullptr, "jdk/internal/misc/CDS must exist!");
104 
105   HandleMark hm(THREAD);
106   int len = _lambdaform_lines->length();
107   objArrayHandle list_lines;
108   {
109     MutexLocker ml(Thread::current(), LambdaFormInvokers_lock);
110     list_lines = oopFactory::new_objArray_handle(vmClasses::String_klass(), len, CHECK);
111     for (int i = 0; i < len; i++) {
112       Handle h_line = java_lang_String::create_from_str(_lambdaform_lines->at(i), CHECK);

150     if (strstr(class_name, "java/lang/invoke/BoundMethodHandle$Species_") != nullptr) {
151       // The species classes are already loaded into the system dictionary
152       // during the execution of CDS.generateLambdaFormHolderClasses(). No
153       // need to regenerate.
154       TempNewSymbol class_name_sym = SymbolTable::new_symbol(class_name);
155       Klass* klass = SystemDictionary::resolve_or_null(class_name_sym, THREAD);
156       assert(klass != nullptr, "must already be loaded");
157       if (!klass->is_shared() && klass->shared_classpath_index() < 0) {
158         // Fake it, so that it will be included into the archive.
159         klass->set_shared_classpath_index(0);
160         // Set the "generated" bit, so it won't interfere with JVMTI.
161         // See SystemDictionaryShared::find_builtin_class().
162         klass->set_is_generated_shared_class();
163       }
164     } else {
165       int len = h_bytes->length();
166       // make a copy of class bytes so GC will not affect us.
167       char *buf = NEW_RESOURCE_ARRAY(char, len);
168       memcpy(buf, (char*)h_bytes->byte_at_addr(0), len);
169       ClassFileStream st((u1*)buf, len, nullptr, ClassFileStream::verify);
170       regenerate_class(class_name, st, CHECK);


171     }
172   }
173 }
174 
175 void LambdaFormInvokers::regenerate_class(char* class_name, ClassFileStream& st, TRAPS) {
176   TempNewSymbol class_name_sym = SymbolTable::new_symbol(class_name);
177   Klass* klass = SystemDictionary::resolve_or_null(class_name_sym, THREAD);
178   assert(klass != nullptr, "must exist");
179   assert(klass->is_instance_klass(), "Should be");
180 
181   ClassLoaderData* cld = ClassLoaderData::the_null_class_loader_data();
182   Handle protection_domain;
183   ClassLoadInfo cl_info(protection_domain);
184 
185   InstanceKlass* result = KlassFactory::create_from_stream(&st,
186                                                    class_name_sym,
187                                                    cld,
188                                                    cl_info,
189                                                    CHECK);
190 

  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 
 25 #include "precompiled.hpp"
 26 #include "cds/archiveBuilder.hpp"
 27 #include "cds/cdsConfig.hpp"
 28 #include "cds/lambdaFormInvokers.hpp"
 29 #include "cds/metaspaceShared.hpp"
 30 #include "cds/regeneratedClasses.hpp"
 31 #include "classfile/classLoadInfo.hpp"
 32 #include "classfile/classFileStream.hpp"
 33 #include "classfile/javaClasses.inline.hpp"
 34 #include "classfile/klassFactory.hpp"
 35 #include "classfile/symbolTable.hpp"
 36 #include "classfile/systemDictionary.hpp"
 37 #include "classfile/systemDictionaryShared.hpp"
 38 #include "classfile/vmClasses.hpp"
 39 #include "classfile/vmSymbols.hpp"
 40 #include "logging/log.hpp"
 41 #include "memory/oopFactory.hpp"
 42 #include "memory/resourceArea.hpp"
 43 #include "oops/instanceKlass.hpp"
 44 #include "oops/klass.inline.hpp"
 45 #include "oops/objArrayKlass.hpp"
 46 #include "oops/objArrayOop.hpp"
 47 #include "oops/oop.inline.hpp"

 74   MutexLocker ml(Thread::current(), LambdaFormInvokers_lock);
 75   if (_lambdaform_lines == nullptr) {
 76     _lambdaform_lines = new GrowableArrayCHeap<char*, mtClassShared>(150);
 77   }
 78   _lambdaform_lines->append(line);
 79 }
 80 
 81 
 82 // convenient output
 83 class PrintLambdaFormMessage {
 84  public:
 85   PrintLambdaFormMessage() {
 86     log_info(cds)("Regenerate MethodHandle Holder classes...");
 87   }
 88   ~PrintLambdaFormMessage() {
 89     log_info(cds)("Regenerate MethodHandle Holder classes...done");
 90   }
 91 };
 92 
 93 void LambdaFormInvokers::regenerate_holder_classes(TRAPS) {
 94   if (!CDSConfig::is_dumping_regenerated_lambdaform_invokers()) {
 95     return;
 96   }
 97   PrintLambdaFormMessage plm;
 98   if (_lambdaform_lines == nullptr || _lambdaform_lines->length() == 0) {
 99     log_info(cds)("Nothing to regenerate for holder classes");
100     return;
101   }
102 
103   ResourceMark rm(THREAD);
104 
105   Symbol* cds_name  = vmSymbols::jdk_internal_misc_CDS();
106   Klass*  cds_klass = SystemDictionary::resolve_or_null(cds_name, THREAD);
107   guarantee(cds_klass != nullptr, "jdk/internal/misc/CDS must exist!");
108 
109   HandleMark hm(THREAD);
110   int len = _lambdaform_lines->length();
111   objArrayHandle list_lines;
112   {
113     MutexLocker ml(Thread::current(), LambdaFormInvokers_lock);
114     list_lines = oopFactory::new_objArray_handle(vmClasses::String_klass(), len, CHECK);
115     for (int i = 0; i < len; i++) {
116       Handle h_line = java_lang_String::create_from_str(_lambdaform_lines->at(i), CHECK);

154     if (strstr(class_name, "java/lang/invoke/BoundMethodHandle$Species_") != nullptr) {
155       // The species classes are already loaded into the system dictionary
156       // during the execution of CDS.generateLambdaFormHolderClasses(). No
157       // need to regenerate.
158       TempNewSymbol class_name_sym = SymbolTable::new_symbol(class_name);
159       Klass* klass = SystemDictionary::resolve_or_null(class_name_sym, THREAD);
160       assert(klass != nullptr, "must already be loaded");
161       if (!klass->is_shared() && klass->shared_classpath_index() < 0) {
162         // Fake it, so that it will be included into the archive.
163         klass->set_shared_classpath_index(0);
164         // Set the "generated" bit, so it won't interfere with JVMTI.
165         // See SystemDictionaryShared::find_builtin_class().
166         klass->set_is_generated_shared_class();
167       }
168     } else {
169       int len = h_bytes->length();
170       // make a copy of class bytes so GC will not affect us.
171       char *buf = NEW_RESOURCE_ARRAY(char, len);
172       memcpy(buf, (char*)h_bytes->byte_at_addr(0), len);
173       ClassFileStream st((u1*)buf, len, nullptr, ClassFileStream::verify);
174       if (!ArchiveInvokeDynamic /* disabled for ArchiveInvokeDynamic because of JDK-8310831 */) {
175         regenerate_class(class_name, st, CHECK);
176       }
177     }
178   }
179 }
180 
181 void LambdaFormInvokers::regenerate_class(char* class_name, ClassFileStream& st, TRAPS) {
182   TempNewSymbol class_name_sym = SymbolTable::new_symbol(class_name);
183   Klass* klass = SystemDictionary::resolve_or_null(class_name_sym, THREAD);
184   assert(klass != nullptr, "must exist");
185   assert(klass->is_instance_klass(), "Should be");
186 
187   ClassLoaderData* cld = ClassLoaderData::the_null_class_loader_data();
188   Handle protection_domain;
189   ClassLoadInfo cl_info(protection_domain);
190 
191   InstanceKlass* result = KlassFactory::create_from_stream(&st,
192                                                    class_name_sym,
193                                                    cld,
194                                                    cl_info,
195                                                    CHECK);
196 
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