1 /*
   2  * Copyright (c) 2011, 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 #ifndef SHARE_VM_JVMCI_JVMCI_COMPILER_HPP
  25 #define SHARE_VM_JVMCI_JVMCI_COMPILER_HPP
  26 
  27 #include "compiler/abstractCompiler.hpp"
  28 #include "jvmci/jvmciEnv.hpp"
  29 #include "utilities/exceptions.hpp"
  30 
  31 class JVMCICompiler : public AbstractCompiler {
  32 private:
  33   bool _bootstrapping;
  34 
  35   /**
  36    * True if we have seen a bootstrap compilation request.
  37    */
  38   volatile bool _bootstrap_compilation_request_handled;
  39 
  40   /**
  41    * Number of methods successfully compiled by a call to
  42    * JVMCICompiler::compile_method().
  43    */
  44   volatile int _methods_compiled;
  45 
  46   static JVMCICompiler* _instance;
  47 
  48   static elapsedTimer _codeInstallTimer;
  49 
  50   /**
  51    * Exits the VM due to an unexpected exception.
  52    */
  53   static void exit_on_pending_exception(oop exception, const char* message);
  54 
  55 public:
  56   JVMCICompiler();
  57 
  58   static JVMCICompiler* instance(TRAPS) {
  59     if (!EnableJVMCI) {
  60       THROW_MSG_NULL(vmSymbols::java_lang_InternalError(), "JVMCI is not enabled")
  61     }
  62     return _instance;
  63   }
  64 
  65   virtual const char* name() { return "JVMCI"; }
  66 
  67   virtual bool supports_native()                 { return true; }
  68   virtual bool supports_osr   ()                 { return true; }
  69 
  70   bool is_jvmci()                                { return true; }
  71   bool is_c1   ()                                { return false; }
  72   bool is_c2   ()                                { return false; }
  73 
  74   bool needs_stubs            () { return false; }
  75 
  76   // Initialization
  77   virtual void initialize();
  78 
  79   /**
  80    * Initialize the compile queue with the methods in java.lang.Object and
  81    * then wait until the queue is empty.
  82    */
  83   void bootstrap(TRAPS);
  84 
  85   bool is_bootstrapping() const { return _bootstrapping; }
  86 
  87   // Compilation entry point for methods
  88   virtual void compile_method(ciEnv* env, ciMethod* target, int entry_bci, DirectiveSet* directive);
  89 
  90   void compile_method(const methodHandle& target, int entry_bci, JVMCIEnv* env);
  91 
  92   virtual bool is_trivial(Method* method);
  93 
  94   // Print compilation timers and statistics
  95   virtual void print_timers();
  96 
  97   /**
  98    * Gets the number of methods that have been successfully compiled by
  99    * a call to JVMCICompiler::compile_method().
 100    */
 101   int methods_compiled() { return _methods_compiled; }
 102 
 103   // Print compilation timers and statistics
 104   static void print_compilation_timers();
 105 
 106   static elapsedTimer* codeInstallTimer() { return &_codeInstallTimer; }
 107 };
 108 
 109 #endif // SHARE_VM_JVMCI_JVMCI_COMPILER_HPP