Mercurial > hg > graal-compiler
view src/share/vm/shark/sharkValue.cpp @ 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 | 2cd5e15048e6 |
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/* * Copyright (c) 1999, 2010, Oracle and/or its affiliates. All rights reserved. * Copyright 2008, 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. * */ #include "precompiled.hpp" #include "ci/ciType.hpp" #include "shark/llvmHeaders.hpp" #include "shark/llvmValue.hpp" #include "shark/sharkBuilder.hpp" #include "shark/sharkValue.hpp" using namespace llvm; // Cloning SharkValue* SharkNormalValue::clone() const { return SharkValue::create_generic(type(), generic_value(), zero_checked()); } SharkValue* SharkPHIValue::clone() const { return SharkValue::create_phi(type(), (PHINode *) generic_value(), this); } SharkValue* SharkAddressValue::clone() const { return SharkValue::address_constant(address_value()); } // Casting bool SharkValue::is_phi() const { return false; } bool SharkPHIValue::is_phi() const { return true; } SharkPHIValue* SharkValue::as_phi() { ShouldNotCallThis(); } SharkPHIValue* SharkPHIValue::as_phi() { return this; } // Comparison bool SharkNormalValue::equal_to(SharkValue *other) const { return (this->type() == other->type() && this->generic_value() == other->generic_value() && this->zero_checked() == other->zero_checked()); } bool SharkAddressValue::equal_to(SharkValue *other) const { return (this->address_value() == other->address_value()); } // Type access ciType* SharkValue::type() const { ShouldNotCallThis(); } ciType* SharkNormalValue::type() const { return _type; } BasicType SharkNormalValue::basic_type() const { return type()->basic_type(); } BasicType SharkAddressValue::basic_type() const { return T_ADDRESS; } int SharkNormalValue::size() const { return type()->size(); } int SharkAddressValue::size() const { return 1; } bool SharkValue::is_jint() const { return false; } bool SharkValue::is_jlong() const { return false; } bool SharkValue::is_jfloat() const { return false; } bool SharkValue::is_jdouble() const { return false; } bool SharkValue::is_jobject() const { return false; } bool SharkValue::is_jarray() const { return false; } bool SharkValue::is_address() const { return false; } bool SharkNormalValue::is_jint() const { return llvm_value()->getType() == SharkType::jint_type(); } bool SharkNormalValue::is_jlong() const { return llvm_value()->getType() == SharkType::jlong_type(); } bool SharkNormalValue::is_jfloat() const { return llvm_value()->getType() == SharkType::jfloat_type(); } bool SharkNormalValue::is_jdouble() const { return llvm_value()->getType() == SharkType::jdouble_type(); } bool SharkNormalValue::is_jobject() const { return llvm_value()->getType() == SharkType::oop_type(); } bool SharkNormalValue::is_jarray() const { return basic_type() == T_ARRAY; } bool SharkAddressValue::is_address() const { return true; } // Typed conversions from SharkValues Value* SharkValue::jint_value() const { ShouldNotCallThis(); } Value* SharkValue::jlong_value() const { ShouldNotCallThis(); } Value* SharkValue::jfloat_value() const { ShouldNotCallThis(); } Value* SharkValue::jdouble_value() const { ShouldNotCallThis(); } Value* SharkValue::jobject_value() const { ShouldNotCallThis(); } Value* SharkValue::jarray_value() const { ShouldNotCallThis(); } int SharkValue::address_value() const { ShouldNotCallThis(); } Value* SharkNormalValue::jint_value() const { assert(is_jint(), "should be"); return llvm_value(); } Value* SharkNormalValue::jlong_value() const { assert(is_jlong(), "should be"); return llvm_value(); } Value* SharkNormalValue::jfloat_value() const { assert(is_jfloat(), "should be"); return llvm_value(); } Value* SharkNormalValue::jdouble_value() const { assert(is_jdouble(), "should be"); return llvm_value(); } Value* SharkNormalValue::jobject_value() const { assert(is_jobject(), "should be"); return llvm_value(); } Value* SharkNormalValue::jarray_value() const { // XXX assert(is_jarray(), "should be"); // XXX http://icedtea.classpath.org/bugzilla/show_bug.cgi?id=324 assert(is_jobject(), "should be"); return llvm_value(); } int SharkAddressValue::address_value() const { return _bci; } // Type-losing conversions -- use with care! Value* SharkNormalValue::generic_value() const { return llvm_value(); } Value* SharkAddressValue::generic_value() const { return LLVMValue::intptr_constant(address_value()); } Value* SharkValue::intptr_value(SharkBuilder* builder) const { ShouldNotCallThis(); } Value* SharkNormalValue::intptr_value(SharkBuilder* builder) const { return builder->CreatePtrToInt(jobject_value(), SharkType::intptr_type()); } // Phi-style stuff for SharkPHIState::add_incoming void SharkValue::addIncoming(SharkValue *value, BasicBlock* block) { ShouldNotCallThis(); } void SharkPHIValue::addIncoming(SharkValue *value, BasicBlock* block) { assert(!is_clone(), "shouldn't be"); ((llvm::PHINode *) generic_value())->addIncoming( value->generic_value(), block); if (!value->zero_checked()) _all_incomers_zero_checked = false; } void SharkAddressValue::addIncoming(SharkValue *value, BasicBlock* block) { assert(this->equal_to(value), "should be"); } // Phi-style stuff for SharkState::merge SharkValue* SharkNormalValue::merge(SharkBuilder* builder, SharkValue* other, BasicBlock* other_block, BasicBlock* this_block, const char* name) { assert(type() == other->type(), "should be"); assert(zero_checked() == other->zero_checked(), "should be"); PHINode *phi = builder->CreatePHI(SharkType::to_stackType(type()), name); phi->addIncoming(this->generic_value(), this_block); phi->addIncoming(other->generic_value(), other_block); return SharkValue::create_generic(type(), phi, zero_checked()); } SharkValue* SharkAddressValue::merge(SharkBuilder* builder, SharkValue* other, BasicBlock* other_block, BasicBlock* this_block, const char* name) { assert(this->equal_to(other), "should be"); return this; } // Repeated null and divide-by-zero check removal bool SharkValue::zero_checked() const { ShouldNotCallThis(); } void SharkValue::set_zero_checked(bool zero_checked) { ShouldNotCallThis(); } bool SharkNormalValue::zero_checked() const { return _zero_checked; } void SharkNormalValue::set_zero_checked(bool zero_checked) { _zero_checked = zero_checked; }