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

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

src/share/vm/shark/sharkContext.hpp

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.
  *
  */
 #ifndef SHARE_VM_SHARK_SHARKCONTEXT_HPP
 #define SHARE_VM_SHARK_SHARKCONTEXT_HPP
 #include "shark/llvmHeaders.hpp"
 #include "shark/sharkCompiler.hpp"
 // The LLVMContext class allows multiple instances of LLVM to operate
 // independently of each other in a multithreaded context.  We extend
 // this here to store things in Shark that are LLVMContext-specific.
 class SharkFreeQueueItem;
 class SharkContext : public llvm::LLVMContext {
  public:
   SharkContext(const char* name);
  private:
   llvm::Module* _module;
  public:
   llvm::Module* module() const {
     return _module;
   }
   // Get this thread's SharkContext
  public:
   static SharkContext& current() {
     return *SharkCompiler::compiler()->context();
   }
   // Module accessors
  public:
   void add_function(llvm::Function* function) const {
     module()->getFunctionList().push_back(function);
   }
   llvm::Constant* get_external(const char*               name,
                                llvm::FunctionType* sig) {
     return module()->getOrInsertFunction(name, sig);
   }
   // Basic types
  private:
   llvm::Type*        _void_type;
   llvm::IntegerType* _bit_type;
   llvm::IntegerType* _jbyte_type;
   llvm::IntegerType* _jshort_type;
   llvm::IntegerType* _jint_type;
   llvm::IntegerType* _jlong_type;
   llvm::Type*        _jfloat_type;
   llvm::Type*        _jdouble_type;
  public:
   llvm::Type* void_type() const {
     return _void_type;
   }
   llvm::IntegerType* bit_type() const {
     return _bit_type;
   }
   llvm::IntegerType* jbyte_type() const {
     return _jbyte_type;
   }
   llvm::IntegerType* jshort_type() const {
     return _jshort_type;
   }
   llvm::IntegerType* jint_type() const {
     return _jint_type;
   }
   llvm::IntegerType* jlong_type() const {
     return _jlong_type;
   }
   llvm::Type* jfloat_type() const {
     return _jfloat_type;
   }
   llvm::Type* jdouble_type() const {
     return _jdouble_type;
   }
   llvm::IntegerType* intptr_type() const {
     return LP64_ONLY(jlong_type()) NOT_LP64(jint_type());
   }
   // Compound types
  private:
   llvm::PointerType*  _itableOffsetEntry_type;
   llvm::PointerType*  _jniEnv_type;
   llvm::PointerType*  _jniHandleBlock_type;
   llvm::PointerType*  _Metadata_type;
   llvm::PointerType*  _klass_type;
   llvm::PointerType*  _Method_type;
   llvm::ArrayType*    _monitor_type;
   llvm::PointerType*  _oop_type;
   llvm::PointerType*  _thread_type;
   llvm::PointerType*  _zeroStack_type;
   llvm::FunctionType* _entry_point_type;
   llvm::FunctionType* _osr_entry_point_type;
  public:
   llvm::PointerType* itableOffsetEntry_type() const {
     return _itableOffsetEntry_type;
   }
   llvm::PointerType* jniEnv_type() const {
     return _jniEnv_type;
   }
   llvm::PointerType* jniHandleBlock_type() const {
     return _jniHandleBlock_type;
   }
   llvm::PointerType* Metadata_type() const {
     return _Metadata_type;
   }
   llvm::PointerType* klass_type() const {
     return _klass_type;
   }
   llvm::PointerType* Method_type() const {
     return _Method_type;
   }
   llvm::ArrayType* monitor_type() const {
     return _monitor_type;
   }
   llvm::PointerType* oop_type() const {
     return _oop_type;
   }
   llvm::PointerType* thread_type() const {
     return _thread_type;
   }
   llvm::PointerType* zeroStack_type() const {
     return _zeroStack_type;
   }
   llvm::FunctionType* entry_point_type() const {
     return _entry_point_type;
   }
   llvm::FunctionType* osr_entry_point_type() const {
     return _osr_entry_point_type;
   }
   // Mappings
  private:
   llvm::Type* _to_stackType[T_CONFLICT];
   llvm::Type* _to_arrayType[T_CONFLICT];
  private:
   llvm::Type* map_type(llvm::Type* const* table,
                              BasicType                type) const {
     assert(type >= 0 && type < T_CONFLICT, "unhandled type");
     llvm::Type* result = table[type];
     assert(result != NULL, "unhandled type");
     return result;
   }
  public:
   llvm::Type* to_stackType(BasicType type) const {
     return map_type(_to_stackType, type);
   }
   llvm::Type* to_arrayType(BasicType type) const {
     return map_type(_to_arrayType, type);
   }
   // Functions queued for freeing
  private:
   SharkFreeQueueItem* _free_queue;
  public:
   void push_to_free_queue(llvm::Function* function);
   llvm::Function* pop_from_free_queue();
 };
 #endif // SHARE_VM_SHARK_SHARKCONTEXT_HPP

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

src/share/vm/shark/sharkContext.hpp