1 /*
   2  * Copyright (c) 2008, 2015, 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 
  25 #include "precompiled.hpp"
  26 #include "classfile/javaClasses.inline.hpp"
  27 #include "classfile/stringTable.hpp"
  28 #include "code/codeCache.hpp"
  29 #include "code/codeCacheExtensions.hpp"
  30 #include "code/dependencyContext.hpp"
  31 #include "compiler/compileBroker.hpp"
  32 #include "interpreter/interpreter.hpp"
  33 #include "interpreter/oopMapCache.hpp"
  34 #include "interpreter/linkResolver.hpp"
  35 #include "memory/allocation.inline.hpp"
  36 #include "memory/oopFactory.hpp"
  37 #include "oops/objArrayOop.inline.hpp"
  38 #include "oops/oop.inline.hpp"
  39 #include "prims/methodHandles.hpp"
  40 #include "prims/jvmtiRedefineClassesTrace.hpp"
  41 #include "runtime/compilationPolicy.hpp"
  42 #include "runtime/javaCalls.hpp"

  43 #include "runtime/reflection.hpp"
  44 #include "runtime/signature.hpp"
  45 #include "runtime/stubRoutines.hpp"
  46 #include "utilities/exceptions.hpp"
  47 
  48 
  49 /*
  50  * JSR 292 reference implementation: method handles
  51  * The JDK 7 reference implementation represented method handle
  52  * combinations as chains.  Each link in the chain had a "vmentry"
  53  * field which pointed at a bit of assembly code which performed
  54  * one transformation before dispatching to the next link in the chain.
  55  *
  56  * The current reference implementation pushes almost all code generation
  57  * responsibility to (trusted) Java code.  A method handle contains a
  58  * pointer to its "LambdaForm", which embodies all details of the method
  59  * handle's behavior.  The LambdaForm is a normal Java object, managed
  60  * by a runtime coded in Java.
  61  */
  62 
  63 bool MethodHandles::_enabled = false; // set true after successful native linkage
  64 MethodHandlesAdapterBlob* MethodHandles::_adapter_code = NULL;
  65 
  66 
  67 /**
  68  * Generates method handle adapters. Returns 'false' if memory allocation
  69  * failed and true otherwise.
  70  */
  71 bool MethodHandles::generate_adapters() {
  72   if (SystemDictionary::MethodHandle_klass() == NULL) {
  73     return true;
  74   }
  75 
  76   assert(_adapter_code == NULL, "generate only once");
  77 
  78   ResourceMark rm;
  79   TraceTime timer("MethodHandles adapters generation", TraceStartupTime);
  80   _adapter_code = MethodHandlesAdapterBlob::create(adapter_code_size);
  81   if (_adapter_code == NULL) {
  82      return false;
  83   }
  84 
  85   CodeBuffer code(_adapter_code);
  86   MethodHandlesAdapterGenerator g(&code);
  87   g.generate();
  88   code.log_section_sizes("MethodHandlesAdapterBlob");
  89   return true;
  90 }
  91 
  92 //------------------------------------------------------------------------------
  93 // MethodHandlesAdapterGenerator::generate
  94 //
  95 void MethodHandlesAdapterGenerator::generate() {
  96   // Generate generic method handle adapters.
  97   // Generate interpreter entries
  98   for (Interpreter::MethodKind mk = Interpreter::method_handle_invoke_FIRST;
  99        mk <= Interpreter::method_handle_invoke_LAST;

   1 /*
   2  * Copyright (c) 2008, 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 
  25 #include "precompiled.hpp"
  26 #include "classfile/javaClasses.inline.hpp"
  27 #include "classfile/stringTable.hpp"
  28 #include "code/codeCache.hpp"
  29 #include "code/codeCacheExtensions.hpp"
  30 #include "code/dependencyContext.hpp"
  31 #include "compiler/compileBroker.hpp"
  32 #include "interpreter/interpreter.hpp"
  33 #include "interpreter/oopMapCache.hpp"
  34 #include "interpreter/linkResolver.hpp"
  35 #include "memory/allocation.inline.hpp"
  36 #include "memory/oopFactory.hpp"
  37 #include "oops/objArrayOop.inline.hpp"
  38 #include "oops/oop.inline.hpp"
  39 #include "prims/methodHandles.hpp"
  40 #include "prims/jvmtiRedefineClassesTrace.hpp"
  41 #include "runtime/compilationPolicy.hpp"
  42 #include "runtime/javaCalls.hpp"
  43 #include "runtime/logTimer.hpp"
  44 #include "runtime/reflection.hpp"
  45 #include "runtime/signature.hpp"
  46 #include "runtime/stubRoutines.hpp"
  47 #include "utilities/exceptions.hpp"
  48 
  49 
  50 /*
  51  * JSR 292 reference implementation: method handles
  52  * The JDK 7 reference implementation represented method handle
  53  * combinations as chains.  Each link in the chain had a "vmentry"
  54  * field which pointed at a bit of assembly code which performed
  55  * one transformation before dispatching to the next link in the chain.
  56  *
  57  * The current reference implementation pushes almost all code generation
  58  * responsibility to (trusted) Java code.  A method handle contains a
  59  * pointer to its "LambdaForm", which embodies all details of the method
  60  * handle's behavior.  The LambdaForm is a normal Java object, managed
  61  * by a runtime coded in Java.
  62  */
  63 
  64 bool MethodHandles::_enabled = false; // set true after successful native linkage
  65 MethodHandlesAdapterBlob* MethodHandles::_adapter_code = NULL;
  66 
  67 
  68 /**
  69  * Generates method handle adapters. Returns 'false' if memory allocation
  70  * failed and true otherwise.
  71  */
  72 bool MethodHandles::generate_adapters() {
  73   if (SystemDictionary::MethodHandle_klass() == NULL) {
  74     return true;
  75   }
  76 
  77   assert(_adapter_code == NULL, "generate only once");
  78 
  79   ResourceMark rm;
  80   TraceStartupTime timer("MethodHandles adapters generation");
  81   _adapter_code = MethodHandlesAdapterBlob::create(adapter_code_size);
  82   if (_adapter_code == NULL) {
  83      return false;
  84   }
  85 
  86   CodeBuffer code(_adapter_code);
  87   MethodHandlesAdapterGenerator g(&code);
  88   g.generate();
  89   code.log_section_sizes("MethodHandlesAdapterBlob");
  90   return true;
  91 }
  92 
  93 //------------------------------------------------------------------------------
  94 // MethodHandlesAdapterGenerator::generate
  95 //
  96 void MethodHandlesAdapterGenerator::generate() {
  97   // Generate generic method handle adapters.
  98   // Generate interpreter entries
  99   for (Interpreter::MethodKind mk = Interpreter::method_handle_invoke_FIRST;
 100        mk <= Interpreter::method_handle_invoke_LAST;