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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 };
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