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

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

src/share/vm/shark/sharkMemoryManager.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 6551: 81d7a4b28dc5
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, 2010, Oracle and/or its affiliates. All rights reserved.
  * Copyright 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.
  *
  */
 #ifndef SHARE_VM_SHARK_SHARKMEMORYMANAGER_HPP
 #define SHARE_VM_SHARK_SHARKMEMORYMANAGER_HPP
 #include "shark/llvmHeaders.hpp"
 #include "shark/sharkEntry.hpp"
 // SharkMemoryManager wraps the LLVM JIT Memory Manager.  We could use
 // this to run our own memory allocation policies, but for now all we
 // use it for is figuring out where the resulting native code ended up.
 class SharkMemoryManager : public llvm::JITMemoryManager {
  public:
   SharkMemoryManager()
     : _mm(llvm::JITMemoryManager::CreateDefaultMemManager()) {}
  private:
   llvm::JITMemoryManager* _mm;
  private:
   llvm::JITMemoryManager* mm() const {
     return _mm;
   }
  private:
   std::map<const llvm::Function*, SharkEntry*> _entry_map;
  public:
   void set_entry_for_function(const llvm::Function* function,
                               SharkEntry*           entry) {
     _entry_map[function] = entry;
   }
   SharkEntry* get_entry_for_function(const llvm::Function* function) {
     return _entry_map[function];
   }
  public:
   void AllocateGOT();
   unsigned char* getGOTBase() const;
   unsigned char* allocateStub(const llvm::GlobalValue* F,
                               unsigned StubSize,
                               unsigned Alignment);
   unsigned char* startFunctionBody(const llvm::Function* F,
                                    uintptr_t& ActualSize);
   void endFunctionBody(const llvm::Function* F,
                        unsigned char* FunctionStart,
                        unsigned char* FunctionEnd);
   unsigned char* startExceptionTable(const llvm::Function* F,
                                      uintptr_t& ActualSize);
   void endExceptionTable(const llvm::Function* F,
                          unsigned char* TableStart,
                          unsigned char* TableEnd,
                          unsigned char* FrameRegister);
   void *getPointerToNamedFunction(const std::string &Name, bool AbortOnFailure = true);
   uint8_t *allocateCodeSection(uintptr_t Size, unsigned Alignment, unsigned SectionID);
   uint8_t *allocateDataSection(uintptr_t Size, unsigned Alignment, unsigned SectionID);
   void setPoisonMemory(bool);
   uint8_t* allocateGlobal(uintptr_t, unsigned int);
   void setMemoryWritable();
   void setMemoryExecutable();
   void deallocateExceptionTable(void *ptr);
   void deallocateFunctionBody(void *ptr);
   unsigned char *allocateSpace(intptr_t Size,
                                unsigned int Alignment);
 };
 #endif // SHARE_VM_SHARK_SHARKMEMORYMANAGER_HPP

Mercurial > jdk8-mips64-public > hotspot / annotate

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

src/share/vm/shark/sharkMemoryManager.hpp