1 /*
   2  * Copyright (c) 2011, 2019, 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_JVMCI_JVMCICOMPILER_HPP
  25 #define SHARE_JVMCI_JVMCICOMPILER_HPP
  26 
  27 #include "compiler/abstractCompiler.hpp"
  28 
  29 class JVMCICompiler : public AbstractCompiler {
  30 private:
  31   bool _bootstrapping;
  32 
  33   /**
  34    * True if we have seen a bootstrap compilation request.
  35    */
  36   volatile bool _bootstrap_compilation_request_handled;
  37 
  38   /**
  39    * Number of methods successfully compiled by a call to
  40    * JVMCICompiler::compile_method().
  41    */
  42   volatile int _methods_compiled;
  43 
  44   static JVMCICompiler* _instance;
  45 
  46   static elapsedTimer _codeInstallTimer;
  47 
  48   /**
  49    * Exits the VM due to an unexpected exception.
  50    */
  51   static void exit_on_pending_exception(oop exception, const char* message);
  52 
  53 public:
  54   JVMCICompiler();
  55 
  56   static JVMCICompiler* instance(bool require_non_null, TRAPS) {
  57     if (!EnableJVMCI) {
  58       THROW_MSG_NULL(vmSymbols::java_lang_InternalError(), "JVMCI is not enabled")
  59     }
  60     if (_instance == NULL && require_non_null) {
  61       THROW_MSG_NULL(vmSymbols::java_lang_InternalError(), "The JVMCI compiler instance has not been created");
  62     }
  63     return _instance;
  64   }
  65 
  66   virtual const char* name() { return UseJVMCINativeLibrary ? "JVMCI-native" : "JVMCI"; }
  67 
  68   virtual bool supports_native()                 { return true; }
  69   virtual bool supports_osr   ()                 { return true; }
  70 
  71   bool is_jvmci()                                { return true; }
  72   bool is_c1   ()                                { return false; }
  73   bool is_c2   ()                                { return false; }
  74 
  75   bool needs_stubs            () { return false; }
  76 
  77   // Initialization
  78   virtual void initialize();
  79 
  80   /**
  81    * Initialize the compile queue with the methods in java.lang.Object and
  82    * then wait until the queue is empty.
  83    */
  84   void bootstrap(TRAPS);
  85 
  86   bool is_bootstrapping() const { return _bootstrapping; }
  87 
  88   void set_bootstrap_compilation_request_handled() {
  89     _instance->_bootstrap_compilation_request_handled = true;
  90   }
  91 
  92   // Compilation entry point for methods
  93   virtual void compile_method(ciEnv* env, ciMethod* target, int entry_bci, DirectiveSet* directive);
  94 
  95   // Print compilation timers and statistics
  96   virtual void print_timers();
  97 
  98   /**
  99    * Gets the number of methods that have been successfully compiled by
 100    * a call to JVMCICompiler::compile_method().
 101    */
 102   int methods_compiled() { return _methods_compiled; }
 103 
 104   void inc_methods_compiled() {
 105     Atomic::inc(&_methods_compiled);
 106   }
 107 
 108   // Print compilation timers and statistics
 109   static void print_compilation_timers();
 110 
 111   static elapsedTimer* codeInstallTimer() { return &_codeInstallTimer; }
 112 };
 113 
 114 #endif // SHARE_JVMCI_JVMCICOMPILER_HPP