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

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

src/share/vm/shark/sharkCodeBuffer.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, 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_SHARKCODEBUFFER_HPP
 #define SHARE_VM_SHARK_SHARKCODEBUFFER_HPP
 #include "asm/codeBuffer.hpp"
 #include "memory/allocation.hpp"
 #include "shark/llvmHeaders.hpp"
 class SharkCodeBuffer : public StackObj {
  public:
   SharkCodeBuffer(MacroAssembler* masm)
     : _masm(masm), _base_pc(NULL) {}
  private:
   MacroAssembler* _masm;
   llvm::Value*    _base_pc;
  private:
   MacroAssembler* masm() const {
     return _masm;
   }
  public:
   llvm::Value* base_pc() const {
     return _base_pc;
   }
   void set_base_pc(llvm::Value* base_pc) {
     assert(_base_pc == NULL, "only do this once");
     _base_pc = base_pc;
   }
   // Allocate some space in the buffer and return its address.
   // This buffer will have been relocated by the time the method
   // is installed, so you can't inline the result in code.
  public:
   void* malloc(size_t size) const {
     masm()->align(BytesPerWord);
     void *result = masm()->pc();
     masm()->advance(size);
     return result;
   }
   // Create a unique offset in the buffer.
  public:
   int create_unique_offset() const {
     int offset = masm()->offset();
     masm()->advance(1);
     return offset;
   }
   // Inline an oop into the buffer and return its offset.
  public:
   int inline_oop(jobject object) const {
     masm()->align(BytesPerWord);
     int offset = masm()->offset();
     masm()->store_oop(object);
     return offset;
   }
   int inline_Metadata(Metadata* metadata) const {
     masm()->align(BytesPerWord);
     int offset = masm()->offset();
     masm()->store_Metadata(metadata);
     return offset;
   }
   // Inline a block of non-oop data into the buffer and return its offset.
  public:
   int inline_data(void *src, size_t size) const {
     masm()->align(BytesPerWord);
     int offset = masm()->offset();
     void *dst = masm()->pc();
     masm()->advance(size);
     memcpy(dst, src, size);
     return offset;
   }
 };
 #endif // SHARE_VM_SHARK_SHARKCODEBUFFER_HPP

Mercurial > jdk8-mips64-public > hotspot / annotate

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

src/share/vm/shark/sharkCodeBuffer.hpp