jdk8-mips64-public/hotspot: src/share/vm/compiler/abstractCompiler.hpp@f90c822e73f8

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http://hg.openjdk.java.net/jdk8u/jdk8u/hotspot/
changeset: 6782:28b50d07f6f8
tag: jdk8u25-b17

     1 /*

     2  * Copyright (c) 1999, 2013, 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  */

    25 #ifndef SHARE_VM_COMPILER_ABSTRACTCOMPILER_HPP

    26 #define SHARE_VM_COMPILER_ABSTRACTCOMPILER_HPP

    28 #include "ci/compilerInterface.hpp"

    30 class AbstractCompiler : public CHeapObj<mtCompiler> {

    31  private:

    32   volatile int _num_compiler_threads;

    34  protected:

    35   volatile int _compiler_state;

    36   // Used for tracking global state of compiler runtime initialization

    37   enum { uninitialized, initializing, initialized, failed, shut_down };

    39   // This method returns true for the first compiler thread that reaches that methods.

    40   // This thread will initialize the compiler runtime.

    41   bool should_perform_init();

    43  public:

    44   AbstractCompiler() : _compiler_state(uninitialized), _num_compiler_threads(0) {}

    46   // This function determines the compiler thread that will perform the

    47   // shutdown of the corresponding compiler runtime.

    48   bool should_perform_shutdown();

    50   // Name of this compiler

    51   virtual const char* name() = 0;

    53   // Missing feature tests

    54   virtual bool supports_native()                 { return true; }

    55   virtual bool supports_osr   ()                 { return true; }

    56   virtual bool can_compile_method(methodHandle method)  { return true; }

    57 #if defined(TIERED) || ( !defined(COMPILER1) && !defined(COMPILER2) && !defined(SHARK))

    58   virtual bool is_c1   ()                        { return false; }

    59   virtual bool is_c2   ()                        { return false; }

    60   virtual bool is_shark()                        { return false; }

    61 #else

    62 #ifdef COMPILER1

    63   bool is_c1   ()                                { return true; }

    64   bool is_c2   ()                                { return false; }

    65   bool is_shark()                                { return false; }

    66 #endif // COMPILER1

    67 #ifdef COMPILER2

    68   bool is_c1   ()                                { return false; }

    69   bool is_c2   ()                                { return true; }

    70   bool is_shark()                                { return false; }

    71 #endif // COMPILER2

    72 #ifdef SHARK

    73   bool is_c1   ()                                { return false; }

    74   bool is_c2   ()                                { return false; }

    75   bool is_shark()                                { return true; }

    76 #endif // SHARK

    77 #endif // TIERED

    79   // Customization

    80   virtual void initialize () = 0;

    82   void set_num_compiler_threads(int num) { _num_compiler_threads = num;  }

    83   int num_compiler_threads()             { return _num_compiler_threads; }

    85   // Get/set state of compiler objects

    86   bool is_initialized()           { return _compiler_state == initialized; }

    87   bool is_failed     ()           { return _compiler_state == failed;}

    88   void set_state     (int state);

    89   void set_shut_down ()           { set_state(shut_down); }

    90   // Compilation entry point for methods

    91   virtual void compile_method(ciEnv* env, ciMethod* target, int entry_bci) {

    92     ShouldNotReachHere();

    93   }

    96   // Print compilation timers and statistics

    97   virtual void print_timers() {

    98     ShouldNotReachHere();

    99   }

   100 };

   102 #endif // SHARE_VM_COMPILER_ABSTRACTCOMPILER_HPP

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