135 lines
4.6 KiB
C++
135 lines
4.6 KiB
C++
/*
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* Copyright (c) 1999, 2013, Oracle and/or its affiliates. All rights reserved.
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* Copyright 2008, 2009, 2010, 2011 Red Hat, Inc.
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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*
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* This code is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License version 2 only, as
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* published by the Free Software Foundation.
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*
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* This code is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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* version 2 for more details (a copy is included in the LICENSE file that
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* accompanied this code).
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*
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* You should have received a copy of the GNU General Public License version
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* 2 along with this work; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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*
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* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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* or visit www.oracle.com if you need additional information or have any
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* questions.
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*
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*/
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#ifndef SHARE_VM_SHARK_SHARKCOMPILER_HPP
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#define SHARE_VM_SHARK_SHARKCOMPILER_HPP
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#include "ci/ciEnv.hpp"
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#include "ci/ciMethod.hpp"
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#include "compiler/abstractCompiler.hpp"
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#include "compiler/compileBroker.hpp"
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#include "shark/llvmHeaders.hpp"
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#include "shark/sharkMemoryManager.hpp"
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class SharkContext;
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class SharkCompiler : public AbstractCompiler {
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public:
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// Creation
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SharkCompiler();
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// Name of this compiler
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const char *name() { return "shark"; }
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// Missing feature tests
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bool supports_native() { return true; }
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bool supports_osr() { return true; }
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bool can_compile_method(methodHandle method) {
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return ! (method->is_method_handle_intrinsic() || method->is_compiled_lambda_form());
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}
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// Initialization
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void initialize();
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// Compile a normal (bytecode) method and install it in the VM
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void compile_method(ciEnv* env, ciMethod* target, int entry_bci);
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// Print compilation timers and statistics
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void print_timers();
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// Generate a wrapper for a native (JNI) method
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nmethod* generate_native_wrapper(MacroAssembler* masm,
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methodHandle target,
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int compile_id,
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BasicType* arg_types,
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BasicType return_type);
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// Free compiled methods (and native wrappers)
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void free_compiled_method(address code);
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// Each thread generating IR needs its own context. The normal
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// context is used for bytecode methods, and is protected from
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// multiple simultaneous accesses by being restricted to the
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// compiler thread. The native context is used for JNI methods,
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// and is protected from multiple simultaneous accesses by the
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// adapter handler library lock.
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private:
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SharkContext* _normal_context;
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SharkContext* _native_context;
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public:
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SharkContext* context() const {
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if (JavaThread::current()->is_Compiler_thread()) {
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return _normal_context;
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}
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else {
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assert(AdapterHandlerLibrary_lock->owned_by_self(), "should be");
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return _native_context;
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}
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}
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// The LLVM execution engine is the JIT we use to generate native
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// code. It is thread safe, but we need to protect it with a lock
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// of our own because otherwise LLVM's lock and HotSpot's locks
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// interleave and deadlock. The SharkMemoryManager is not thread
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// safe, and is protected by the same lock as the execution engine.
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private:
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Monitor* _execution_engine_lock;
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SharkMemoryManager* _memory_manager;
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llvm::ExecutionEngine* _execution_engine;
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private:
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Monitor* execution_engine_lock() const {
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return _execution_engine_lock;
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}
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SharkMemoryManager* memory_manager() const {
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assert(execution_engine_lock()->owned_by_self(), "should be");
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return _memory_manager;
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}
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llvm::ExecutionEngine* execution_engine() const {
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assert(execution_engine_lock()->owned_by_self(), "should be");
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return _execution_engine;
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}
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// Global access
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public:
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static SharkCompiler* compiler() {
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AbstractCompiler *compiler =
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CompileBroker::compiler(CompLevel_full_optimization);
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assert(compiler->is_shark() && compiler->is_initialized(), "should be");
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return (SharkCompiler *) compiler;
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}
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// Helpers
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private:
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static const char* methodname(const char* klass, const char* method);
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void generate_native_code(SharkEntry* entry,
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llvm::Function* function,
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const char* name);
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void free_queued_methods();
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};
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#endif // SHARE_VM_SHARK_SHARKCOMPILER_HPP
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