Mercurial > hg > graal-compiler
view src/share/vm/c1/c1_Compiler.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 | 06f017f7daa7 d2a62e0f25eb |
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/* * Copyright (c) 1999, 2010, Oracle and/or its affiliates. All rights reserved. * 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 "c1/c1_Compilation.hpp" #include "c1/c1_Compiler.hpp" #include "c1/c1_FrameMap.hpp" #include "c1/c1_GraphBuilder.hpp" #include "c1/c1_LinearScan.hpp" #include "c1/c1_MacroAssembler.hpp" #include "c1/c1_Runtime1.hpp" #include "c1/c1_ValueType.hpp" #include "compiler/compileBroker.hpp" #include "compiler/compilerOracle.hpp" #include "interpreter/linkResolver.hpp" #include "memory/allocation.hpp" #include "memory/allocation.inline.hpp" #include "memory/resourceArea.hpp" #include "prims/nativeLookup.hpp" #include "runtime/arguments.hpp" #include "runtime/interfaceSupport.hpp" #include "runtime/sharedRuntime.hpp" volatile int Compiler::_runtimes = uninitialized; Compiler::Compiler() { } Compiler::~Compiler() { Unimplemented(); } void Compiler::initialize_all() { BufferBlob* buffer_blob = CompilerThread::current()->get_buffer_blob(); Arena* arena = new Arena(); Runtime1::initialize(buffer_blob); FrameMap::initialize(); // initialize data structures ValueType::initialize(arena); // Instruction::initialize(); // BlockBegin::initialize(); GraphBuilder::initialize(); // note: to use more than one instance of LinearScan at a time this function call has to // be moved somewhere outside of this constructor: Interval::initialize(arena); } void Compiler::initialize() { if (_runtimes != initialized) { initialize_runtimes( initialize_all, &_runtimes); } mark_initialized(); } BufferBlob* Compiler::build_buffer_blob() { // setup CodeBuffer. Preallocate a BufferBlob of size // NMethodSizeLimit plus some extra space for constants. int code_buffer_size = Compilation::desired_max_code_buffer_size() + Compilation::desired_max_constant_size(); BufferBlob* blob = BufferBlob::create("Compiler1 temporary CodeBuffer", code_buffer_size); guarantee(blob != NULL, "must create initial code buffer"); return blob; } void Compiler::compile_method(ciEnv* env, ciMethod* method, int entry_bci) { // Allocate buffer blob once at startup since allocation for each // compilation seems to be too expensive (at least on Intel win32). BufferBlob* buffer_blob = CompilerThread::current()->get_buffer_blob(); if (buffer_blob == NULL) { buffer_blob = build_buffer_blob(); CompilerThread::current()->set_buffer_blob(buffer_blob); } if (!is_initialized()) { initialize(); } // invoke compilation { // We are nested here because we need for the destructor // of Compilation to occur before we release the any // competing compiler thread ResourceMark rm; Compilation c(this, env, method, entry_bci, buffer_blob); } } void Compiler::print_timers() { Compilation::print_timers(); }