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

src/share/vm/shark/sharkContext.cpp@01522ca68fc7 (annotated)

src/share/vm/shark/sharkContext.cpp

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

author: johnc
date: Tue, 18 Jun 2013 12:31:07 -0700
changeset 5277: 01522ca68fc7
parent 4314: 2cd5e15048e6
child 6876: 710a3c8b516e
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.
  * Copyright 2009, 2010 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 "oops/arrayOop.hpp"
 #include "oops/oop.hpp"
 #include "shark/llvmHeaders.hpp"
 #include "shark/sharkContext.hpp"
 #include "utilities/globalDefinitions.hpp"
 #include "memory/allocation.hpp"
 using namespace llvm;
 SharkContext::SharkContext(const char* name)
   : LLVMContext(),
     _free_queue(NULL) {
   // Create a module to build our functions into
   _module = new Module(name, *this);
   // Create basic types
   _void_type    = Type::getVoidTy(*this);
   _bit_type     = Type::getInt1Ty(*this);
   _jbyte_type   = Type::getInt8Ty(*this);
   _jshort_type  = Type::getInt16Ty(*this);
   _jint_type    = Type::getInt32Ty(*this);
   _jlong_type   = Type::getInt64Ty(*this);
   _jfloat_type  = Type::getFloatTy(*this);
   _jdouble_type = Type::getDoubleTy(*this);
   // Create compound types
   _itableOffsetEntry_type = PointerType::getUnqual(
     ArrayType::get(jbyte_type(), itableOffsetEntry::size() * wordSize));
   _Metadata_type = PointerType::getUnqual(
     ArrayType::get(jbyte_type(), sizeof(Metadata)));
   _klass_type = PointerType::getUnqual(
     ArrayType::get(jbyte_type(), sizeof(Klass)));
   _jniEnv_type = PointerType::getUnqual(
     ArrayType::get(jbyte_type(), sizeof(JNIEnv)));
   _jniHandleBlock_type = PointerType::getUnqual(
     ArrayType::get(jbyte_type(), sizeof(JNIHandleBlock)));
   _Method_type = PointerType::getUnqual(
     ArrayType::get(jbyte_type(), sizeof(Method)));
   _monitor_type = ArrayType::get(
     jbyte_type(), frame::interpreter_frame_monitor_size() * wordSize);
   _oop_type = PointerType::getUnqual(
     ArrayType::get(jbyte_type(), sizeof(oopDesc)));
   _thread_type = PointerType::getUnqual(
     ArrayType::get(jbyte_type(), sizeof(JavaThread)));
   _zeroStack_type = PointerType::getUnqual(
     ArrayType::get(jbyte_type(), sizeof(ZeroStack)));
   std::vector<Type*> params;
   params.push_back(Method_type());
   params.push_back(intptr_type());
   params.push_back(thread_type());
   _entry_point_type = FunctionType::get(jint_type(), params, false);
   params.clear();
   params.push_back(Method_type());
   params.push_back(PointerType::getUnqual(jbyte_type()));
   params.push_back(intptr_type());
   params.push_back(thread_type());
   _osr_entry_point_type = FunctionType::get(jint_type(), params, false);
   // Create mappings
   for (int i = 0; i < T_CONFLICT; i++) {
     switch (i) {
     case T_BOOLEAN:
       _to_stackType[i] = jint_type();
       _to_arrayType[i] = jbyte_type();
       break;
     case T_BYTE:
       _to_stackType[i] = jint_type();
       _to_arrayType[i] = jbyte_type();
       break;
     case T_CHAR:
       _to_stackType[i] = jint_type();
       _to_arrayType[i] = jshort_type();
       break;
     case T_SHORT:
       _to_stackType[i] = jint_type();
       _to_arrayType[i] = jshort_type();
       break;
     case T_INT:
       _to_stackType[i] = jint_type();
       _to_arrayType[i] = jint_type();
       break;
     case T_LONG:
       _to_stackType[i] = jlong_type();
       _to_arrayType[i] = jlong_type();
       break;
     case T_FLOAT:
       _to_stackType[i] = jfloat_type();
       _to_arrayType[i] = jfloat_type();
       break;
     case T_DOUBLE:
       _to_stackType[i] = jdouble_type();
       _to_arrayType[i] = jdouble_type();
       break;
     case T_OBJECT:
     case T_ARRAY:
       _to_stackType[i] = oop_type();
       _to_arrayType[i] = oop_type();
       break;
     case T_ADDRESS:
       _to_stackType[i] = intptr_type();
       _to_arrayType[i] = NULL;
       break;
     default:
       _to_stackType[i] = NULL;
       _to_arrayType[i] = NULL;
     }
   }
 }
 class SharkFreeQueueItem : public CHeapObj<mtNone> {
  public:
   SharkFreeQueueItem(llvm::Function* function, SharkFreeQueueItem *next)
     : _function(function), _next(next) {}
  private:
   llvm::Function*     _function;
   SharkFreeQueueItem* _next;
  public:
   llvm::Function* function() const {
     return _function;
   }
   SharkFreeQueueItem* next() const {
     return _next;
   }
 };
 void SharkContext::push_to_free_queue(Function* function) {
   _free_queue = new SharkFreeQueueItem(function, _free_queue);
 }
 Function* SharkContext::pop_from_free_queue() {
   if (_free_queue == NULL)
     return NULL;
   SharkFreeQueueItem *item = _free_queue;
   Function *function = item->function();
   _free_queue = item->next();
   delete item;
   return function;
 }

Mercurial > jdk8-mips64-public > hotspot / annotate

src/share/vm/shark/sharkContext.cpp@01522ca68fc7 (annotated)

src/share/vm/shark/sharkContext.cpp