aoqi@0: /*
aoqi@0:  * Copyright (c) 1999, 2013, Oracle and/or its affiliates. All rights reserved.
aoqi@0:  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
aoqi@0:  *
aoqi@0:  * This code is free software; you can redistribute it and/or modify it
aoqi@0:  * under the terms of the GNU General Public License version 2 only, as
aoqi@0:  * published by the Free Software Foundation.
aoqi@0:  *
aoqi@0:  * This code is distributed in the hope that it will be useful, but WITHOUT
aoqi@0:  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
aoqi@0:  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
aoqi@0:  * version 2 for more details (a copy is included in the LICENSE file that
aoqi@0:  * accompanied this code).
aoqi@0:  *
aoqi@0:  * You should have received a copy of the GNU General Public License version
aoqi@0:  * 2 along with this work; if not, write to the Free Software Foundation,
aoqi@0:  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
aoqi@0:  *
aoqi@0:  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
aoqi@0:  * or visit www.oracle.com if you need additional information or have any
aoqi@0:  * questions.
aoqi@0:  *
aoqi@0:  */
aoqi@0: 
aoqi@0: #ifndef SHARE_VM_COMPILER_ABSTRACTCOMPILER_HPP
aoqi@0: #define SHARE_VM_COMPILER_ABSTRACTCOMPILER_HPP
aoqi@0: 
aoqi@0: #include "ci/compilerInterface.hpp"
aoqi@0: 
aoqi@0: class AbstractCompiler : public CHeapObj<mtCompiler> {
aoqi@0:  private:
aoqi@0:   volatile int _num_compiler_threads;
aoqi@0: 
aoqi@0:  protected:
aoqi@0:   volatile int _compiler_state;
aoqi@0:   // Used for tracking global state of compiler runtime initialization
aoqi@0:   enum { uninitialized, initializing, initialized, failed, shut_down };
aoqi@0: 
aoqi@0:   // This method returns true for the first compiler thread that reaches that methods.
aoqi@0:   // This thread will initialize the compiler runtime.
aoqi@0:   bool should_perform_init();
aoqi@0: 
aoqi@0:  public:
aoqi@0:   AbstractCompiler() : _compiler_state(uninitialized), _num_compiler_threads(0) {}
aoqi@0: 
aoqi@0:   // This function determines the compiler thread that will perform the
aoqi@0:   // shutdown of the corresponding compiler runtime.
aoqi@0:   bool should_perform_shutdown();
aoqi@0: 
aoqi@0:   // Name of this compiler
aoqi@0:   virtual const char* name() = 0;
aoqi@0: 
aoqi@0:   // Missing feature tests
aoqi@0:   virtual bool supports_native()                 { return true; }
aoqi@0:   virtual bool supports_osr   ()                 { return true; }
aoqi@0:   virtual bool can_compile_method(methodHandle method)  { return true; }
aoqi@0: #if defined(TIERED) || ( !defined(COMPILER1) && !defined(COMPILER2) && !defined(SHARK))
aoqi@0:   virtual bool is_c1   ()                        { return false; }
aoqi@0:   virtual bool is_c2   ()                        { return false; }
aoqi@0:   virtual bool is_shark()                        { return false; }
aoqi@0: #else
aoqi@0: #ifdef COMPILER1
aoqi@0:   bool is_c1   ()                                { return true; }
aoqi@0:   bool is_c2   ()                                { return false; }
aoqi@0:   bool is_shark()                                { return false; }
aoqi@0: #endif // COMPILER1
aoqi@0: #ifdef COMPILER2
aoqi@0:   bool is_c1   ()                                { return false; }
aoqi@0:   bool is_c2   ()                                { return true; }
aoqi@0:   bool is_shark()                                { return false; }
aoqi@0: #endif // COMPILER2
aoqi@0: #ifdef SHARK
aoqi@0:   bool is_c1   ()                                { return false; }
aoqi@0:   bool is_c2   ()                                { return false; }
aoqi@0:   bool is_shark()                                { return true; }
aoqi@0: #endif // SHARK
aoqi@0: #endif // TIERED
aoqi@0: 
aoqi@0:   // Customization
aoqi@0:   virtual void initialize () = 0;
aoqi@0: 
aoqi@0:   void set_num_compiler_threads(int num) { _num_compiler_threads = num;  }
aoqi@0:   int num_compiler_threads()             { return _num_compiler_threads; }
aoqi@0: 
aoqi@0:   // Get/set state of compiler objects
aoqi@0:   bool is_initialized()           { return _compiler_state == initialized; }
aoqi@0:   bool is_failed     ()           { return _compiler_state == failed;}
aoqi@0:   void set_state     (int state);
aoqi@0:   void set_shut_down ()           { set_state(shut_down); }
aoqi@0:   // Compilation entry point for methods
aoqi@0:   virtual void compile_method(ciEnv* env, ciMethod* target, int entry_bci) {
aoqi@0:     ShouldNotReachHere();
aoqi@0:   }
aoqi@0: 
aoqi@0: 
aoqi@0:   // Print compilation timers and statistics
aoqi@0:   virtual void print_timers() {
aoqi@0:     ShouldNotReachHere();
aoqi@0:   }
aoqi@0: };
aoqi@0: 
aoqi@0: #endif // SHARE_VM_COMPILER_ABSTRACTCOMPILER_HPP