1 /* 2 * Copyright (c) 1999, 2010, 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 typedef void (*initializer)(void); 26 27 class AbstractCompiler : public CHeapObj { 28 private: 29 bool _is_initialized; // Mark whether compiler object is initialized 30 31 protected: 32 // Used for tracking global state of compiler runtime initialization 33 enum { uninitialized, initializing, initialized }; 34 35 // This method will call the initialization method "f" once (per compiler class/subclass) 36 // and do so without holding any locks 37 void initialize_runtimes(initializer f, volatile int* state); 38 39 public: 40 AbstractCompiler() : _is_initialized(false) {} 41 42 // Name of this compiler 43 virtual const char* name() = 0; 44 45 // Missing feature tests 46 virtual bool supports_native() { return true; } 47 virtual bool supports_osr () { return true; } 48 #if defined(TIERED) || ( !defined(COMPILER1) && !defined(COMPILER2) && !defined(SHARK)) 49 virtual bool is_c1 () { return false; } 50 virtual bool is_c2 () { return false; } 51 virtual bool is_shark() { return false; } 52 #else 53 #ifdef COMPILER1 54 bool is_c1 () { return true; } 55 bool is_c2 () { return false; } 56 bool is_shark() { return false; } 57 #endif // COMPILER1 58 #ifdef COMPILER2 59 bool is_c1 () { return false; } 60 bool is_c2 () { return true; } 61 bool is_shark() { return false; } 62 #endif // COMPILER2 63 #ifdef SHARK 64 bool is_c1 () { return false; } 65 bool is_c2 () { return false; } 66 bool is_shark() { return true; } 67 #endif // SHARK 68 #endif // TIERED 69 70 // Customization 71 virtual bool needs_stubs () = 0; 72 73 void mark_initialized() { _is_initialized = true; } 74 bool is_initialized() { return _is_initialized; } 75 76 virtual void initialize() = 0; 77 78 // Compilation entry point for methods 79 virtual void compile_method(ciEnv* env, 80 ciMethod* target, 81 int entry_bci) { 82 ShouldNotReachHere(); 83 } 84 85 86 // Print compilation timers and statistics 87 virtual void print_timers() { 88 ShouldNotReachHere(); 89 } 90 };