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1 /* |
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2 * Copyright 1999-2007 Sun Microsystems, Inc. All Rights Reserved. |
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3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
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4 * |
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5 * This code is free software; you can redistribute it and/or modify it |
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6 * under the terms of the GNU General Public License version 2 only, as |
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7 * published by the Free Software Foundation. |
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8 * |
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9 * This code is distributed in the hope that it will be useful, but WITHOUT |
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10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
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11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
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12 * version 2 for more details (a copy is included in the LICENSE file that |
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13 * accompanied this code). |
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14 * |
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15 * You should have received a copy of the GNU General Public License version |
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16 * 2 along with this work; if not, write to the Free Software Foundation, |
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17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
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18 * |
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19 * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara, |
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20 * CA 95054 USA or visit www.sun.com if you need additional information or |
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21 * have any questions. |
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22 * |
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23 */ |
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24 |
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25 typedef void (*initializer)(void); |
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26 |
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27 class AbstractCompiler : public CHeapObj { |
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28 private: |
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29 bool _is_initialized; // Mark whether compiler object is initialized |
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30 |
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31 protected: |
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32 // Used for tracking global state of compiler runtime initialization |
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33 enum { uninitialized, initializing, initialized }; |
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34 |
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35 // This method will call the initialization method "f" once (per compiler class/subclass) |
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36 // and do so without holding any locks |
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37 void initialize_runtimes(initializer f, volatile int* state); |
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38 |
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39 public: |
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40 AbstractCompiler() : _is_initialized(false) {} |
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41 |
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42 // Name of this compiler |
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43 virtual const char* name() = 0; |
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44 |
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45 // Missing feature tests |
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46 virtual bool supports_native() { return true; } |
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47 virtual bool supports_osr () { return true; } |
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48 #if defined(TIERED) || ( !defined(COMPILER1) && !defined(COMPILER2)) |
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49 virtual bool is_c1 () { return false; } |
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50 virtual bool is_c2 () { return false; } |
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51 #else |
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52 #ifdef COMPILER1 |
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53 bool is_c1 () { return true; } |
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54 bool is_c2 () { return false; } |
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55 #endif // COMPILER1 |
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56 #ifdef COMPILER2 |
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57 bool is_c1 () { return false; } |
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58 bool is_c2 () { return true; } |
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59 #endif // COMPILER2 |
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60 #endif // TIERED |
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61 |
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62 // Customization |
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63 virtual bool needs_stubs () = 0; |
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64 |
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65 void mark_initialized() { _is_initialized = true; } |
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66 bool is_initialized() { return _is_initialized; } |
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67 |
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68 virtual void initialize() = 0; |
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69 |
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70 // Compilation entry point for methods |
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71 virtual void compile_method(ciEnv* env, |
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72 ciMethod* target, |
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73 int entry_bci) { |
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74 ShouldNotReachHere(); |
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75 } |
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76 |
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77 |
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78 // Print compilation timers and statistics |
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79 virtual void print_timers() { |
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80 ShouldNotReachHere(); |
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81 } |
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82 }; |