Mercurial > hg > graal-compiler
view src/share/vm/shark/sharkNativeWrapper.hpp @ 2149:7e37af9d69ef
7011379: G1: overly long concurrent marking cycles
Summary: This changeset introduces filtering of SATB buffers at the point when they are about to be enqueued. If this filtering clears enough entries on each buffer, the buffer can then be re-used and not enqueued. This cuts down the number of SATB buffers that need to be processed by the concurrent marking threads.
Reviewed-by: johnc, ysr
author | tonyp |
---|---|
date | Wed, 19 Jan 2011 09:35:17 -0500 |
parents | f95d63e2154a |
children |
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/* * Copyright (c) 1999, 2010, Oracle and/or its affiliates. All rights reserved. * Copyright 2009 Red Hat, Inc. * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. * * This code is free software; you can redistribute it and/or modify it * under the terms of the GNU General Public License version 2 only, as * published by the Free Software Foundation. * * This code is distributed in the hope that it will be useful, but WITHOUT * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License * version 2 for more details (a copy is included in the LICENSE file that * accompanied this code). * * You should have received a copy of the GNU General Public License version * 2 along with this work; if not, write to the Free Software Foundation, * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. * * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA * or visit www.oracle.com if you need additional information or have any * questions. * */ #ifndef SHARE_VM_SHARK_SHARKNATIVEWRAPPER_HPP #define SHARE_VM_SHARK_SHARKNATIVEWRAPPER_HPP #include "runtime/handles.hpp" #include "shark/llvmHeaders.hpp" #include "shark/sharkBuilder.hpp" #include "shark/sharkContext.hpp" #include "shark/sharkInvariants.hpp" #include "shark/sharkStack.hpp" class SharkNativeWrapper : public SharkCompileInvariants { friend class SharkStackWithNativeFrame; public: static SharkNativeWrapper* build(SharkBuilder* builder, methodHandle target, const char* name, BasicType* arg_types, BasicType return_type) { return new SharkNativeWrapper(builder, target, name, arg_types, return_type); } private: SharkNativeWrapper(SharkBuilder* builder, methodHandle target, const char* name, BasicType* arg_types, BasicType return_type) : SharkCompileInvariants(NULL, builder), _target(target), _arg_types(arg_types), _return_type(return_type), _lock_slot_offset(0) { initialize(name); } private: void initialize(const char* name); private: methodHandle _target; BasicType* _arg_types; BasicType _return_type; llvm::Function* _function; SharkStack* _stack; llvm::Value* _oop_tmp_slot; OopMapSet* _oop_maps; int _receiver_slot_offset; int _lock_slot_offset; // The method being compiled. protected: methodHandle target() const { return _target; } // Properties of the method. protected: int arg_size() const { return target()->size_of_parameters(); } BasicType arg_type(int i) const { return _arg_types[i]; } BasicType return_type() const { return _return_type; } bool is_static() const { return target()->is_static(); } bool is_synchronized() const { return target()->is_synchronized(); } bool is_returning_oop() const { return target()->is_returning_oop(); } // The LLVM function we are building. public: llvm::Function* function() const { return _function; } // The Zero stack and our frame on it. protected: SharkStack* stack() const { return _stack; } // Temporary oop storage. protected: llvm::Value* oop_tmp_slot() const { assert(is_static() || is_returning_oop(), "should be"); return _oop_tmp_slot; } // Information required by nmethod::new_native_nmethod(). public: int frame_size() const { return stack()->oopmap_frame_size(); } ByteSize receiver_offset() const { return in_ByteSize(_receiver_slot_offset * wordSize); } ByteSize lock_offset() const { return in_ByteSize(_lock_slot_offset * wordSize); } OopMapSet* oop_maps() const { return _oop_maps; } // Helpers. private: llvm::BasicBlock* CreateBlock(const char* name = "") const { return llvm::BasicBlock::Create(SharkContext::current(), name, function()); } llvm::Value* thread_state_address() const { return builder()->CreateAddressOfStructEntry( thread(), JavaThread::thread_state_offset(), llvm::PointerType::getUnqual(SharkType::jint_type()), "thread_state_address"); } llvm::Value* pending_exception_address() const { return builder()->CreateAddressOfStructEntry( thread(), Thread::pending_exception_offset(), llvm::PointerType::getUnqual(SharkType::oop_type()), "pending_exception_address"); } void CreateSetThreadState(JavaThreadState state) const { builder()->CreateStore( LLVMValue::jint_constant(state), thread_state_address()); } void CreateWriteMemorySerializePage() const { builder()->CreateStore( LLVMValue::jint_constant(1), builder()->CreateIntToPtr( builder()->CreateAdd( LLVMValue::intptr_constant( (intptr_t) os::get_memory_serialize_page()), builder()->CreateAnd( builder()->CreateLShr( builder()->CreatePtrToInt(thread(), SharkType::intptr_type()), LLVMValue::intptr_constant(os::get_serialize_page_shift_count())), LLVMValue::intptr_constant(os::get_serialize_page_mask()))), llvm::PointerType::getUnqual(SharkType::jint_type()))); } void CreateResetHandleBlock() const { llvm::Value *active_handles = builder()->CreateValueOfStructEntry( thread(), JavaThread::active_handles_offset(), SharkType::jniHandleBlock_type(), "active_handles"); builder()->CreateStore( LLVMValue::intptr_constant(0), builder()->CreateAddressOfStructEntry( active_handles, in_ByteSize(JNIHandleBlock::top_offset_in_bytes()), llvm::PointerType::getUnqual(SharkType::intptr_type()), "top")); } llvm::LoadInst* CreateLoadPendingException() const { return builder()->CreateLoad( pending_exception_address(), "pending_exception"); } }; #endif // SHARE_VM_SHARK_SHARKNATIVEWRAPPER_HPP