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

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

src/share/vm/shark/sharkStack.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 2008, 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_SHARKSTACK_HPP
 #define SHARE_VM_SHARK_SHARKSTACK_HPP
 #include "shark/llvmHeaders.hpp"
 #include "shark/sharkInvariants.hpp"
 #include "shark/sharkType.hpp"
 class SharkFunction;
 class SharkNativeWrapper;
 class SharkStackWithNormalFrame;
 class SharkStackWithNativeFrame;
 class SharkStack : public SharkCompileInvariants {
  public:
   static SharkStack* CreateBuildAndPushFrame(
     SharkFunction* function, llvm::Value* method);
   static SharkStack* CreateBuildAndPushFrame(
     SharkNativeWrapper* wrapper, llvm::Value* method);
  protected:
   SharkStack(const SharkCompileInvariants* parent)
     : SharkCompileInvariants(parent) {}
  protected:
   void initialize(llvm::Value* method);
  protected:
   void CreateStackOverflowCheck(llvm::Value* sp);
   // Properties of the method being compiled
  protected:
   virtual int arg_size() const = 0;
   virtual int max_locals() const = 0;
   virtual int max_stack() const = 0;
   virtual int max_monitors() const = 0;
   // BasicBlock creation
  protected:
   virtual llvm::BasicBlock* CreateBlock(const char* name = "") const = 0;
   // Interpreter entry point for bailouts
  protected:
   virtual address interpreter_entry_point() const = 0;
   // Interface with the Zero stack
  private:
   llvm::Value* zero_stack() const {
     return builder()->CreateAddressOfStructEntry(
       thread(),
       JavaThread::zero_stack_offset(),
       SharkType::zeroStack_type(),
       "zero_stack");
   }
   llvm::Value* stack_base() const {
     return builder()->CreateValueOfStructEntry(
       zero_stack(),
       ZeroStack::base_offset(),
       SharkType::intptr_type(),
       "stack_base");
   }
   llvm::Value* stack_pointer_addr() const {
     return builder()->CreateAddressOfStructEntry(
       zero_stack(),
       ZeroStack::sp_offset(),
       llvm::PointerType::getUnqual(SharkType::intptr_type()),
       "stack_pointer_addr");
   }
   llvm::Value* frame_pointer_addr() const {
     return builder()->CreateAddressOfStructEntry(
       thread(),
       JavaThread::top_zero_frame_offset(),
       llvm::PointerType::getUnqual(SharkType::intptr_type()),
       "frame_pointer_addr");
   }
  public:
   llvm::LoadInst* CreateLoadStackPointer(const char *name = "") {
     return builder()->CreateLoad(stack_pointer_addr(), name);
   }
   llvm::StoreInst* CreateStoreStackPointer(llvm::Value* value) {
     return builder()->CreateStore(value, stack_pointer_addr());
   }
   llvm::LoadInst* CreateLoadFramePointer(const char *name = "") {
     return builder()->CreateLoad(frame_pointer_addr(), name);
   }
   llvm::StoreInst* CreateStoreFramePointer(llvm::Value* value) {
     return builder()->CreateStore(value, frame_pointer_addr());
   }
   llvm::Value* CreatePopFrame(int result_slots);
   // Interface with the frame anchor
  private:
   llvm::Value* last_Java_sp_addr() const {
     return builder()->CreateAddressOfStructEntry(
       thread(),
       JavaThread::last_Java_sp_offset(),
       llvm::PointerType::getUnqual(SharkType::intptr_type()),
       "last_Java_sp_addr");
   }
   llvm::Value* last_Java_fp_addr() const {
     return builder()->CreateAddressOfStructEntry(
       thread(),
       JavaThread::last_Java_fp_offset(),
       llvm::PointerType::getUnqual(SharkType::intptr_type()),
       "last_Java_fp_addr");
   }
  public:
   void CreateSetLastJavaFrame() {
     // Note that whenever _last_Java_sp != NULL other anchor fields
     // must be valid.  The profiler apparently depends on this.
     NOT_PRODUCT(CreateAssertLastJavaSPIsNull());
     builder()->CreateStore(CreateLoadFramePointer(), last_Java_fp_addr());
     // XXX There's last_Java_pc as well, but I don't think anything uses it
     // Also XXX: should we fence here?  Zero doesn't...
     builder()->CreateStore(CreateLoadStackPointer(), last_Java_sp_addr());
     // Also also XXX: we could probably cache the sp (and the fp we know??)
   }
   void CreateResetLastJavaFrame() {
     builder()->CreateStore(LLVMValue::intptr_constant(0), last_Java_sp_addr());
   }
  private:
   void CreateAssertLastJavaSPIsNull() const PRODUCT_RETURN;
   // Our method's frame
  private:
   llvm::Value* _frame;
   int          _extended_frame_size;
   int          _stack_slots_offset;
  public:
   int extended_frame_size() const {
     return _extended_frame_size;
   }
   int oopmap_frame_size() const {
     return extended_frame_size() - arg_size();
   }
   // Offsets of things in the frame
  private:
   int _monitors_slots_offset;
   int _oop_tmp_slot_offset;
   int _method_slot_offset;
   int _pc_slot_offset;
   int _locals_slots_offset;
  public:
   int stack_slots_offset() const {
     return _stack_slots_offset;
   }
   int oop_tmp_slot_offset() const {
     return _oop_tmp_slot_offset;
   }
   int method_slot_offset() const {
     return _method_slot_offset;
   }
   int pc_slot_offset() const {
     return _pc_slot_offset;
   }
   int locals_slots_offset() const {
     return _locals_slots_offset;
   }
   int monitor_offset(int index) const {
     assert(index >= 0 && index < max_monitors(), "invalid monitor index");
     return _monitors_slots_offset +
       (max_monitors() - 1 - index) * frame::interpreter_frame_monitor_size();
   }
   int monitor_object_offset(int index) const {
     return monitor_offset(index) +
       (BasicObjectLock::obj_offset_in_bytes() >> LogBytesPerWord);
   }
   int monitor_header_offset(int index) const {
     return monitor_offset(index) +
       ((BasicObjectLock::lock_offset_in_bytes() +
         BasicLock::displaced_header_offset_in_bytes()) >> LogBytesPerWord);
   }
   // Addresses of things in the frame
  public:
   llvm::Value* slot_addr(int               offset,
                          llvm::Type* type = NULL,
                          const char*       name = "") const;
   llvm::Value* monitor_addr(int index) const {
     return slot_addr(
       monitor_offset(index),
       SharkType::monitor_type(),
       "monitor");
   }
   llvm::Value* monitor_object_addr(int index) const {
     return slot_addr(
       monitor_object_offset(index),
       SharkType::oop_type(),
       "object_addr");
   }
   llvm::Value* monitor_header_addr(int index) const {
     return slot_addr(
       monitor_header_offset(index),
       SharkType::intptr_type(),
       "displaced_header_addr");
   }
   // oopmap helpers
  public:
   static int oopmap_slot_munge(int offset) {
     return offset << (LogBytesPerWord - LogBytesPerInt);
   }
   static VMReg slot2reg(int offset) {
     return VMRegImpl::stack2reg(oopmap_slot_munge(offset));
   }
 };
 class SharkStackWithNormalFrame : public SharkStack {
   friend class SharkStack;
  protected:
   SharkStackWithNormalFrame(SharkFunction* function, llvm::Value* method);
  private:
   SharkFunction* _function;
  private:
   SharkFunction* function() const {
     return _function;
   }
   // Properties of the method being compiled
  private:
   int arg_size() const;
   int max_locals() const;
   int max_stack() const;
   int max_monitors() const;
   // BasicBlock creation
  private:
   llvm::BasicBlock* CreateBlock(const char* name = "") const;
   // Interpreter entry point for bailouts
  private:
   address interpreter_entry_point() const;
 };
 class SharkStackWithNativeFrame : public SharkStack {
   friend class SharkStack;
  protected:
   SharkStackWithNativeFrame(SharkNativeWrapper* wrapper, llvm::Value* method);
  private:
   SharkNativeWrapper* _wrapper;
  private:
   SharkNativeWrapper* wrapper() const {
     return _wrapper;
   }
   // Properties of the method being compiled
  private:
   int arg_size() const;
   int max_locals() const;
   int max_stack() const;
   int max_monitors() const;
   // BasicBlock creation
  private:
   llvm::BasicBlock* CreateBlock(const char* name = "") const;
   // Interpreter entry point for bailouts
  private:
   address interpreter_entry_point() const;
 };
 #endif // SHARE_VM_SHARK_SHARKSTACK_HPP

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

src/share/vm/shark/sharkStack.hpp