costModel.hpp

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00001 /* Copyright 1994 - 1996 LongView Technologies L.L.C. $Revision: 1.1 $ */
00002 /* Copyright (c) 2006, Sun Microsystems, Inc.
00003 All rights reserved.
00004 
00005 Redistribution and use in source and binary forms, with or without modification, are permitted provided that the 
00006 following conditions are met:
00007 
00008     * Redistributions of source code must retain the above copyright notice, this list of conditions and the following disclaimer.
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00020 
00021 
00022 */
00023 
00024 # ifdef DELTA_COMPILER
00025 
00026 // CostModel holds the 'costs' for all bytecodes. These costs
00027 // are used to estimate the inline cost for a given methodOop.
00028 
00029 class CostModel: AllStatic {
00030  private:
00031   static int _cost[Bytecodes::number_of_codes];
00032 
00033  public:
00034   static int  cost_for(Bytecodes::Code code)                            { return _cost[(int)code]; }
00035 
00036   static void set_default_costs();                                      // sets default costs
00037   static void set_cost_for_all(int cost);                               // sets cost for all instructions
00038   static void set_cost_for_code(Bytecodes::Code     code, int cost);    // sets cost for individual instruction
00039   static void set_cost_for_type(Bytecodes::CodeType type, int cost);    // sets cost for all instructions of a certain type
00040   static void set_cost_for_send(Bytecodes::SendType send, int cost);    // sets cost for all sends of a certain type
00041 
00042   static void print();
00043 };
00044 
00045 # endif

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