1 /* 2 * Copyright (c) 1999, 2014, Oracle and/or its affiliates. All rights reserved. 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. 4 * 5 * This code is free software; you can redistribute it and/or modify it 6 * under the terms of the GNU General Public License version 2 only, as 7 * published by the Free Software Foundation. 8 * 9 * This code is distributed in the hope that it will be useful, but WITHOUT 10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 12 * version 2 for more details (a copy is included in the LICENSE file that 13 * accompanied this code). 14 * 15 * You should have received a copy of the GNU General Public License version 16 * 2 along with this work; if not, write to the Free Software Foundation, 17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. 18 * 19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 20 * or visit www.oracle.com if you need additional information or have any 21 * questions. 22 * 23 */ 24 25 #ifndef SHARE_VM_COMPILER_ABSTRACTCOMPILER_HPP 26 #define SHARE_VM_COMPILER_ABSTRACTCOMPILER_HPP 27 28 #include "ci/compilerInterface.hpp" 29 30 class AbstractCompiler : public CHeapObj<mtCompiler> { 31 private: 32 volatile int _num_compiler_threads; 33 34 protected: 35 volatile int _compiler_state; 36 // Used for tracking global state of compiler runtime initialization 37 enum { uninitialized, initializing, initialized, failed, shut_down }; 38 39 // This method returns true for the first compiler thread that reaches that methods. 40 // This thread will initialize the compiler runtime. 41 bool should_perform_init(); 42 43 // The (closed set) of concrete compiler classes. 44 enum Type { 45 none, 46 c1, 47 c2, 48 shark 49 }; 50 51 private: 52 Type _type; 53 54 public: 55 AbstractCompiler(Type type) : _type(type), _compiler_state(uninitialized), _num_compiler_threads(0) {} 56 57 // This function determines the compiler thread that will perform the 58 // shutdown of the corresponding compiler runtime. 59 bool should_perform_shutdown(); 60 61 // Name of this compiler 62 virtual const char* name() = 0; 63 64 // Missing feature tests 65 virtual bool supports_native() { return true; } 66 virtual bool supports_osr () { return true; } 67 virtual bool can_compile_method(methodHandle method) { return true; } 68 69 // Compiler type queries. 70 bool is_c1() { return _type == c1; } 71 bool is_c2() { return _type == c2; } 72 bool is_shark() { return _type == shark; } 73 74 // Customization 75 virtual void initialize () = 0; 76 77 void set_num_compiler_threads(int num) { _num_compiler_threads = num; } 78 int num_compiler_threads() { return _num_compiler_threads; } 79 80 // Get/set state of compiler objects 81 bool is_initialized() { return _compiler_state == initialized; } 82 bool is_failed () { return _compiler_state == failed;} 83 void set_state (int state); 84 void set_shut_down () { set_state(shut_down); } 85 // Compilation entry point for methods 86 virtual void compile_method(ciEnv* env, ciMethod* target, int entry_bci) { 87 ShouldNotReachHere(); 88 } 89 90 91 // Print compilation timers and statistics 92 virtual void print_timers() { 93 ShouldNotReachHere(); 94 } 95 }; 96 97 #endif // SHARE_VM_COMPILER_ABSTRACTCOMPILER_HPP