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

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

src/share/vm/shark/sharkInvariants.hpp

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

author: johnc
date: Tue, 18 Jun 2013 12:31:07 -0700
changeset 5277: 01522ca68fc7
parent 4443: c095a7f289aa
child 6198: 55fb97c4c58d
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 2008, 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_SHARKINVARIANTS_HPP
 #define SHARE_VM_SHARK_SHARKINVARIANTS_HPP
 #include "ci/ciEnv.hpp"
 #include "ci/ciInstanceKlass.hpp"
 #include "ci/ciMethod.hpp"
 #include "ci/ciTypeFlow.hpp"
 #include "code/debugInfoRec.hpp"
 #include "code/dependencies.hpp"
 #include "memory/allocation.hpp"
 #include "shark/llvmHeaders.hpp"
 #include "shark/sharkBuilder.hpp"
 // Base classes used to track various values through the compilation.
 // SharkCompileInvariants is used to track values which remain the
 // same for the top-level method and any inlined methods it may have
 // (ie for the whole compilation).  SharkTargetInvariants is used to
 // track values which differ between methods.
 class SharkCompileInvariants : public ResourceObj {
  protected:
   SharkCompileInvariants(ciEnv* env, SharkBuilder* builder)
     : _env(env),
       _builder(builder),
       _thread(NULL) {}
   SharkCompileInvariants(const SharkCompileInvariants* parent)
     : _env(parent->_env),
       _builder(parent->_builder),
       _thread(parent->_thread) {}
  private:
   ciEnv*        _env;
   SharkBuilder* _builder;
   llvm::Value*  _thread;
   // Top-level broker for HotSpot's Compiler Interface.
   //
   // Its main purpose is to allow the various CI classes to access
   // oops in the VM without having to worry about safepointing.  In
   // addition to this it acts as a holder for various recorders and
   // memory allocators.
   //
   // Accessing this directly is kind of ugly, so it's private.  Add
   // new accessors below if you need something from it.
  protected:
   ciEnv* env() const {
     assert(_env != NULL, "env not available");
     return _env;
   }
   // The SharkBuilder that is used to build LLVM IR.
  protected:
   SharkBuilder* builder() const {
     return _builder;
   }
   // Pointer to this thread's JavaThread object.  This is not
   // available until a short way into SharkFunction creation
   // so a setter is required.  Assertions are used to enforce
   // invariance.
  protected:
   llvm::Value* thread() const {
     assert(_thread != NULL, "thread not available");
     return _thread;
   }
   void set_thread(llvm::Value* thread) {
     assert(_thread == NULL, "thread already set");
     _thread = thread;
   }
   // Objects that handle various aspects of the compilation.
  protected:
   DebugInformationRecorder* debug_info() const {
     return env()->debug_info();
   }
   SharkCodeBuffer* code_buffer() const {
     return builder()->code_buffer();
   }
  public:
   Dependencies* dependencies() const {
     return env()->dependencies();
   }
   // Commonly used classes
  protected:
   ciInstanceKlass* java_lang_Object_klass() const {
     return env()->Object_klass();
   }
   ciInstanceKlass* java_lang_Throwable_klass() const {
     return env()->Throwable_klass();
   }
 };
 class SharkTargetInvariants : public SharkCompileInvariants {
  protected:
   SharkTargetInvariants(ciEnv* env, SharkBuilder* builder, ciTypeFlow* flow)
     : SharkCompileInvariants(env, builder),
       _target(flow->method()),
       _flow(flow),
       _max_monitors(count_monitors()) {}
   SharkTargetInvariants(const SharkCompileInvariants* parent, ciMethod* target)
     : SharkCompileInvariants(parent),
       _target(target),
       _flow(NULL),
       _max_monitors(count_monitors()) {}
   SharkTargetInvariants(const SharkTargetInvariants* parent)
     : SharkCompileInvariants(parent),
       _target(parent->_target),
       _flow(parent->_flow),
       _max_monitors(parent->_max_monitors) {}
  private:
   int count_monitors();
  private:
   ciMethod*   _target;
   ciTypeFlow* _flow;
   int         _max_monitors;
   // The method being compiled.
  protected:
   ciMethod* target() const {
     return _target;
   }
   // Typeflow analysis of the method being compiled.
  protected:
   ciTypeFlow* flow() const {
     assert(_flow != NULL, "typeflow not available");
     return _flow;
   }
   // Properties of the method.
  protected:
   int max_locals() const {
     return target()->max_locals();
   }
   int max_stack() const {
     return target()->max_stack();
   }
   int max_monitors() const {
     return _max_monitors;
   }
   int arg_size() const {
     return target()->arg_size();
   }
   bool is_static() const {
     return target()->is_static();
   }
   bool is_synchronized() const {
     return target()->is_synchronized();
   }
 };
 #endif // SHARE_VM_SHARK_SHARKINVARIANTS_HPP

Mercurial > jdk8-mips64-public > hotspot / annotate

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

src/share/vm/shark/sharkInvariants.hpp