jdk8-mips64-public/hotspot: src/share/vm/c1/c1_Compiler.cpp@01522ca68fc7 (annotated)

src/share/vm/c1/c1_Compiler.cpp@01522ca68fc7 (annotated)

src/share/vm/c1/c1_Compiler.cpp

Tue, 18 Jun 2013 12:31:07 -0700

author: johnc
date: Tue, 18 Jun 2013 12:31:07 -0700
changeset 5277: 01522ca68fc7
parent 5157: 01e51113b4f5
child 5919: 469216acdb28
permissions: -rw-r--r--

8015237: Parallelize string table scanning during strong root processing
Summary: Parallelize the scanning of the intern string table by having each GC worker claim a given number of buckets. Changes were also reviewed by Per Liden <per.liden@oracle.com>.
Reviewed-by: tschatzl, stefank, twisti

 /*
  * Copyright (c) 1999, 2012, 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 (mtCompiler) 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::get_buffer_blob(ciEnv* env) {
   // 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) {
     return 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();
   buffer_blob = BufferBlob::create("Compiler1 temporary CodeBuffer",
                                    code_buffer_size);
   if (buffer_blob == NULL) {
     CompileBroker::handle_full_code_cache();
     env->record_failure("CodeCache is full");
   } else {
     CompilerThread::current()->set_buffer_blob(buffer_blob);
   }
   return buffer_blob;
 }
 void Compiler::compile_method(ciEnv* env, ciMethod* method, int entry_bci) {
   BufferBlob* buffer_blob = Compiler::get_buffer_blob(env);
   if (buffer_blob == NULL) {
     return;
   }
   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();
 }

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src/share/vm/c1/c1_Compiler.cpp@01522ca68fc7 (annotated)

src/share/vm/c1/c1_Compiler.cpp