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annotate src/share/vm/compiler/abstractCompiler.hpp @ 14225:16e101c8691f

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8029305: add type tag to AbstractCompiler Reviewed-by: iveresov, kvn
author twisti
date Mon, 06 Jan 2014 17:23:07 -0800
parents de6a9e811145
children d8041d695d19
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1 /*
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2 * Copyright (c) 1999, 2014, Oracle and/or its affiliates. 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 Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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20 * or visit www.oracle.com if you need additional information or have any
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21 * questions.
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22 *
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23 */
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24
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25 #ifndef SHARE_VM_COMPILER_ABSTRACTCOMPILER_HPP
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26 #define SHARE_VM_COMPILER_ABSTRACTCOMPILER_HPP
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27
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28 #include "ci/compilerInterface.hpp"
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29
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30 class AbstractCompiler : public CHeapObj<mtCompiler> {
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31 private:
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32 volatile int _num_compiler_threads;
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33
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34 protected:
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35 volatile int _compiler_state;
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36 // Used for tracking global state of compiler runtime initialization
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37 enum { uninitialized, initializing, initialized, failed, shut_down };
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38
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39 // This method returns true for the first compiler thread that reaches that methods.
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40 // This thread will initialize the compiler runtime.
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41 bool should_perform_init();
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42
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43 // The (closed set) of concrete compiler classes.
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44 enum Type {
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45 none,
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46 c1,
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47 c2,
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48 shark
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49 };
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50
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51 private:
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52 Type _type;
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53
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54 public:
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55 AbstractCompiler(Type type) : _type(type), _compiler_state(uninitialized), _num_compiler_threads(0) {}
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56
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57 // This function determines the compiler thread that will perform the
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58 // shutdown of the corresponding compiler runtime.
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59 bool should_perform_shutdown();
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60
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61 // Name of this compiler
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62 virtual const char* name() = 0;
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63
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64 // Missing feature tests
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65 virtual bool supports_native() { return true; }
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66 virtual bool supports_osr () { return true; }
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67 virtual bool can_compile_method(methodHandle method) { return true; }
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68
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69 // Compiler type queries.
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70 bool is_c1() { return _type == c1; }
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71 bool is_c2() { return _type == c2; }
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72 bool is_shark() { return _type == shark; }
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73
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74 // Customization
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75 virtual void initialize () = 0;
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76
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77 void set_num_compiler_threads(int num) { _num_compiler_threads = num; }
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78 int num_compiler_threads() { return _num_compiler_threads; }
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79
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80 // Get/set state of compiler objects
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81 bool is_initialized() { return _compiler_state == initialized; }
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82 bool is_failed () { return _compiler_state == failed;}
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83 void set_state (int state);
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84 void set_shut_down () { set_state(shut_down); }
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85 // Compilation entry point for methods
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86 virtual void compile_method(ciEnv* env, ciMethod* target, int entry_bci) {
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87 ShouldNotReachHere();
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88 }
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89
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91 // Print compilation timers and statistics
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92 virtual void print_timers() {
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93 ShouldNotReachHere();
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94 }
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95 };
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96
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97 #endif // SHARE_VM_COMPILER_ABSTRACTCOMPILER_HPP