1 /* 2 * Copyright (c) 1999, 2015, Oracle and/or its affiliates. All rights reserved. 3 * Copyright 2008, 2009, 2010, 2011 Red Hat, Inc. 4 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. 5 * 6 * This code is free software; you can redistribute it and/or modify it 7 * under the terms of the GNU General Public License version 2 only, as 8 * published by the Free Software Foundation. 9 * 10 * This code is distributed in the hope that it will be useful, but WITHOUT 11 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 12 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 13 * version 2 for more details (a copy is included in the LICENSE file that 14 * accompanied this code). 15 * 16 * You should have received a copy of the GNU General Public License version 17 * 2 along with this work; if not, write to the Free Software Foundation, 18 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. 19 * 20 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 21 * or visit www.oracle.com if you need additional information or have any 22 * questions. 23 * 24 */ 25 26 #ifndef SHARE_VM_SHARK_SHARKCOMPILER_HPP 27 #define SHARE_VM_SHARK_SHARKCOMPILER_HPP 28 29 #include "ci/ciEnv.hpp" 30 #include "ci/ciMethod.hpp" 31 #include "compiler/abstractCompiler.hpp" 32 #include "compiler/compileBroker.hpp" 33 #include "compiler/compilerDirectives.hpp" 34 #include "shark/llvmHeaders.hpp" 35 #include "shark/sharkMemoryManager.hpp" 36 37 class SharkContext; 38 39 class SharkCompiler : public AbstractCompiler { 40 public: 41 // Creation 42 SharkCompiler(); 43 44 // Name of this compiler 45 const char *name() { return "shark"; } 46 47 // Missing feature tests 48 bool supports_native() { return true; } 49 bool supports_osr() { return true; } 50 bool can_compile_method(const methodHandle& method) { 51 return ! (method->is_method_handle_intrinsic() || method->is_compiled_lambda_form()); 52 } 53 54 // Initialization 55 void initialize(); 56 57 // Compile a normal (bytecode) method and install it in the VM 58 void compile_method(ciEnv* env, ciMethod* target, int entry_bci, DirectiveSet* dirset); 59 60 // Print compilation timers and statistics 61 void print_timers(); 62 63 // Generate a wrapper for a native (JNI) method 64 nmethod* generate_native_wrapper(MacroAssembler* masm, 65 const methodHandle& target, 66 int compile_id, 67 BasicType* arg_types, 68 BasicType return_type); 69 70 // Free compiled methods (and native wrappers) 71 void free_compiled_method(address code); 72 73 // Each thread generating IR needs its own context. The normal 74 // context is used for bytecode methods, and is protected from 75 // multiple simultaneous accesses by being restricted to the 76 // compiler thread. The native context is used for JNI methods, 77 // and is protected from multiple simultaneous accesses by the 78 // adapter handler library lock. 79 private: 80 SharkContext* _normal_context; 81 SharkContext* _native_context; 82 83 public: 84 SharkContext* context() const { 85 if (JavaThread::current()->is_Compiler_thread()) { 86 return _normal_context; 87 } 88 else { 89 assert(AdapterHandlerLibrary_lock->owned_by_self(), "should be"); 90 return _native_context; 91 } 92 } 93 94 // The LLVM execution engine is the JIT we use to generate native 95 // code. It is thread safe, but we need to protect it with a lock 96 // of our own because otherwise LLVM's lock and HotSpot's locks 97 // interleave and deadlock. The SharkMemoryManager is not thread 98 // safe, and is protected by the same lock as the execution engine. 99 private: 100 Monitor* _execution_engine_lock; 101 SharkMemoryManager* _memory_manager; 102 llvm::ExecutionEngine* _execution_engine; 103 104 private: 105 Monitor* execution_engine_lock() const { 106 return _execution_engine_lock; 107 } 108 SharkMemoryManager* memory_manager() const { 109 assert(execution_engine_lock()->owned_by_self(), "should be"); 110 return _memory_manager; 111 } 112 llvm::ExecutionEngine* execution_engine() const { 113 assert(execution_engine_lock()->owned_by_self(), "should be"); 114 return _execution_engine; 115 } 116 117 // Global access 118 public: 119 static SharkCompiler* compiler() { 120 AbstractCompiler *compiler = 121 CompileBroker::compiler(CompLevel_full_optimization); 122 assert(compiler->is_shark() && compiler->is_initialized(), "should be"); 123 return (SharkCompiler *) compiler; 124 } 125 126 // Helpers 127 private: 128 static const char* methodname(const char* klass, const char* method); 129 void generate_native_code(SharkEntry* entry, 130 llvm::Function* function, 131 const char* name); 132 void free_queued_methods(); 133 }; 134 135 #endif // SHARE_VM_SHARK_SHARKCOMPILER_HPP