1.1 --- /dev/null Thu Jan 01 00:00:00 1970 +0000
1.2 +++ b/src/share/vm/shark/sharkCompiler.hpp Wed Apr 27 01:25:04 2016 +0800
1.3 @@ -0,0 +1,131 @@
1.4 +/*
1.5 + * Copyright (c) 1999, 2013, Oracle and/or its affiliates. All rights reserved.
1.6 + * Copyright 2008, 2009, 2010, 2011 Red Hat, Inc.
1.7 + * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
1.8 + *
1.9 + * This code is free software; you can redistribute it and/or modify it
1.10 + * under the terms of the GNU General Public License version 2 only, as
1.11 + * published by the Free Software Foundation.
1.12 + *
1.13 + * This code is distributed in the hope that it will be useful, but WITHOUT
1.14 + * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
1.15 + * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
1.16 + * version 2 for more details (a copy is included in the LICENSE file that
1.17 + * accompanied this code).
1.18 + *
1.19 + * You should have received a copy of the GNU General Public License version
1.20 + * 2 along with this work; if not, write to the Free Software Foundation,
1.21 + * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
1.22 + *
1.23 + * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
1.24 + * or visit www.oracle.com if you need additional information or have any
1.25 + * questions.
1.26 + *
1.27 + */
1.28 +
1.29 +#ifndef SHARE_VM_SHARK_SHARKCOMPILER_HPP
1.30 +#define SHARE_VM_SHARK_SHARKCOMPILER_HPP
1.31 +
1.32 +#include "ci/ciEnv.hpp"
1.33 +#include "ci/ciMethod.hpp"
1.34 +#include "compiler/abstractCompiler.hpp"
1.35 +#include "compiler/compileBroker.hpp"
1.36 +#include "shark/llvmHeaders.hpp"
1.37 +#include "shark/sharkMemoryManager.hpp"
1.38 +
1.39 +class SharkContext;
1.40 +
1.41 +class SharkCompiler : public AbstractCompiler {
1.42 + public:
1.43 + // Creation
1.44 + SharkCompiler();
1.45 +
1.46 + // Name of this compiler
1.47 + const char *name() { return "shark"; }
1.48 +
1.49 + // Missing feature tests
1.50 + bool supports_native() { return true; }
1.51 + bool supports_osr() { return true; }
1.52 + bool can_compile_method(methodHandle method) {
1.53 + return ! (method->is_method_handle_intrinsic() || method->is_compiled_lambda_form());
1.54 + }
1.55 +
1.56 + // Initialization
1.57 + void initialize();
1.58 +
1.59 + // Compile a normal (bytecode) method and install it in the VM
1.60 + void compile_method(ciEnv* env, ciMethod* target, int entry_bci);
1.61 +
1.62 + // Generate a wrapper for a native (JNI) method
1.63 + nmethod* generate_native_wrapper(MacroAssembler* masm,
1.64 + methodHandle target,
1.65 + int compile_id,
1.66 + BasicType* arg_types,
1.67 + BasicType return_type);
1.68 +
1.69 + // Free compiled methods (and native wrappers)
1.70 + void free_compiled_method(address code);
1.71 +
1.72 + // Each thread generating IR needs its own context. The normal
1.73 + // context is used for bytecode methods, and is protected from
1.74 + // multiple simultaneous accesses by being restricted to the
1.75 + // compiler thread. The native context is used for JNI methods,
1.76 + // and is protected from multiple simultaneous accesses by the
1.77 + // adapter handler library lock.
1.78 + private:
1.79 + SharkContext* _normal_context;
1.80 + SharkContext* _native_context;
1.81 +
1.82 + public:
1.83 + SharkContext* context() const {
1.84 + if (JavaThread::current()->is_Compiler_thread()) {
1.85 + return _normal_context;
1.86 + }
1.87 + else {
1.88 + assert(AdapterHandlerLibrary_lock->owned_by_self(), "should be");
1.89 + return _native_context;
1.90 + }
1.91 + }
1.92 +
1.93 + // The LLVM execution engine is the JIT we use to generate native
1.94 + // code. It is thread safe, but we need to protect it with a lock
1.95 + // of our own because otherwise LLVM's lock and HotSpot's locks
1.96 + // interleave and deadlock. The SharkMemoryManager is not thread
1.97 + // safe, and is protected by the same lock as the execution engine.
1.98 + private:
1.99 + Monitor* _execution_engine_lock;
1.100 + SharkMemoryManager* _memory_manager;
1.101 + llvm::ExecutionEngine* _execution_engine;
1.102 +
1.103 + private:
1.104 + Monitor* execution_engine_lock() const {
1.105 + return _execution_engine_lock;
1.106 + }
1.107 + SharkMemoryManager* memory_manager() const {
1.108 + assert(execution_engine_lock()->owned_by_self(), "should be");
1.109 + return _memory_manager;
1.110 + }
1.111 + llvm::ExecutionEngine* execution_engine() const {
1.112 + assert(execution_engine_lock()->owned_by_self(), "should be");
1.113 + return _execution_engine;
1.114 + }
1.115 +
1.116 + // Global access
1.117 + public:
1.118 + static SharkCompiler* compiler() {
1.119 + AbstractCompiler *compiler =
1.120 + CompileBroker::compiler(CompLevel_full_optimization);
1.121 + assert(compiler->is_shark() && compiler->is_initialized(), "should be");
1.122 + return (SharkCompiler *) compiler;
1.123 + }
1.124 +
1.125 + // Helpers
1.126 + private:
1.127 + static const char* methodname(const char* klass, const char* method);
1.128 + void generate_native_code(SharkEntry* entry,
1.129 + llvm::Function* function,
1.130 + const char* name);
1.131 + void free_queued_methods();
1.132 +};
1.133 +
1.134 +#endif // SHARE_VM_SHARK_SHARKCOMPILER_HPP
