/*

 * Copyright (c) 2011, 2019, Oracle and/or its affiliates. All rights reserved.

 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.

 *

 * This code is free software; you can redistribute it and/or modify it

 * under the terms of the GNU General Public License version 2 only, as

 * published by the Free Software Foundation.

 *

 * This code is distributed in the hope that it will be useful, but WITHOUT

 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or

 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License

 * version 2 for more details (a copy is included in the LICENSE file that

 * accompanied this code).

 *

 * You should have received a copy of the GNU General Public License version

 * 2 along with this work; if not, write to the Free Software Foundation,

 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.

 *

 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA

 * or visit www.oracle.com if you need additional information or have any

 * questions.

 */

#ifndef SHARE_JVMCI_JVMCICOMPILER_HPP

#define SHARE_JVMCI_JVMCICOMPILER_HPP

#include "compiler/abstractCompiler.hpp"

class JVMCICompiler : public AbstractCompiler {

private:

  bool _bootstrapping;

  /**

   * True if we have seen a bootstrap compilation request.

   */

  volatile bool _bootstrap_compilation_request_handled;

  /**

   * Number of methods successfully compiled by a call to

   * JVMCICompiler::compile_method().

   */

  volatile int _methods_compiled;

  static JVMCICompiler* _instance;

  static elapsedTimer _codeInstallTimer;

  /**

   * Exits the VM due to an unexpected exception.

   */

  static void exit_on_pending_exception(oop exception, const char* message);

public:

  JVMCICompiler();

  static JVMCICompiler* instance(bool require_non_null, TRAPS) {

    if (!EnableJVMCI) {

      THROW_MSG_NULL(vmSymbols::java_lang_InternalError(), "JVMCI is not enabled")

    }

    if (_instance == NULL && require_non_null) {

      THROW_MSG_NULL(vmSymbols::java_lang_InternalError(), "The JVMCI compiler instance has not been created");

    }

    return _instance;

  }

  virtual const char* name() { return UseJVMCINativeLibrary ? "JVMCI-native" : "JVMCI"; }

  virtual bool supports_native()                 { return true; }

  virtual bool supports_osr   ()                 { return true; }

  bool is_jvmci()                                { return true; }

  bool is_c1   ()                                { return false; }

  bool is_c2   ()                                { return false; }

  bool needs_stubs            () { return false; }

  // Initialization

  virtual void initialize();

  /**

   * Initialize the compile queue with the methods in java.lang.Object and

   * then wait until the queue is empty.

   */

  void bootstrap(TRAPS);

  // Should force compilation of method at CompLevel_simple?

  bool is_bootstrapping() const { return _bootstrapping; }

  void set_bootstrap_compilation_request_handled() {

    _instance->_bootstrap_compilation_request_handled = true;

  }

  // Compilation entry point for methods

  virtual void compile_method(ciEnv* env, ciMethod* target, int entry_bci, DirectiveSet* directive);

  // Print compilation timers and statistics

  virtual void print_timers();

  /**

   * Gets the number of methods that have been successfully compiled by

   * a call to JVMCICompiler::compile_method().

   */

  int methods_compiled() { return _methods_compiled; }

  void inc_methods_compiled() {

    Atomic::inc(&_methods_compiled);

  }

  // Print compilation timers and statistics

  static void print_compilation_timers();

  static elapsedTimer* codeInstallTimer() { return &_codeInstallTimer; }

};

#endif // SHARE_JVMCI_JVMCICOMPILER_HPP