view src/share/vm/shark/sharkMemoryManager.cpp @ 2149:7e37af9d69ef

7011379: G1: overly long concurrent marking cycles Summary: This changeset introduces filtering of SATB buffers at the point when they are about to be enqueued. If this filtering clears enough entries on each buffer, the buffer can then be re-used and not enqueued. This cuts down the number of SATB buffers that need to be processed by the concurrent marking threads. Reviewed-by: johnc, ysr
author tonyp
date Wed, 19 Jan 2011 09:35:17 -0500
parents f95d63e2154a
children 2cd5e15048e6
line wrap: on
line source

/*
 * 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.
 *
 */

#include "precompiled.hpp"
#include "shark/llvmHeaders.hpp"
#include "shark/sharkEntry.hpp"
#include "shark/sharkMemoryManager.hpp"

using namespace llvm;

void SharkMemoryManager::AllocateGOT() {
  mm()->AllocateGOT();
}

unsigned char* SharkMemoryManager::getGOTBase() const {
  return mm()->getGOTBase();
}

unsigned char* SharkMemoryManager::allocateStub(const GlobalValue* F,
                                                unsigned StubSize,
                                                unsigned Alignment) {
  return mm()->allocateStub(F, StubSize, Alignment);
}

unsigned char* SharkMemoryManager::startFunctionBody(const Function* F,
                                                     uintptr_t& ActualSize) {
  return mm()->startFunctionBody(F, ActualSize);
}

void SharkMemoryManager::endFunctionBody(const Function* F,
                                         unsigned char* FunctionStart,
                                         unsigned char* FunctionEnd) {
  mm()->endFunctionBody(F, FunctionStart, FunctionEnd);

  SharkEntry *entry = get_entry_for_function(F);
  if (entry != NULL)
    entry->set_code_limit(FunctionEnd);
}

unsigned char* SharkMemoryManager::startExceptionTable(const Function* F,
                                                       uintptr_t& ActualSize) {
  return mm()->startExceptionTable(F, ActualSize);
}

void SharkMemoryManager::endExceptionTable(const Function* F,
                                           unsigned char* TableStart,
                                           unsigned char* TableEnd,
                                           unsigned char* FrameRegister) {
  mm()->endExceptionTable(F, TableStart, TableEnd, FrameRegister);
}

void SharkMemoryManager::setMemoryWritable() {
  mm()->setMemoryWritable();
}

void SharkMemoryManager::setMemoryExecutable() {
  mm()->setMemoryExecutable();
}

#if SHARK_LLVM_VERSION >= 27
void SharkMemoryManager::deallocateExceptionTable(void *ptr) {
  mm()->deallocateExceptionTable(ptr);
}

void SharkMemoryManager::deallocateFunctionBody(void *ptr) {
  mm()->deallocateFunctionBody(ptr);
}
#else
void SharkMemoryManager::deallocateMemForFunction(const Function* F) {
  return mm()->deallocateMemForFunction(F);
}
#endif

uint8_t* SharkMemoryManager::allocateGlobal(uintptr_t Size,
                                            unsigned int Alignment) {
  return mm()->allocateGlobal(Size, Alignment);
}

#if SHARK_LLVM_VERSION < 27
void* SharkMemoryManager::getDlsymTable() const {
  return mm()->getDlsymTable();
}

void SharkMemoryManager::SetDlsymTable(void *ptr) {
  mm()->SetDlsymTable(ptr);
}
#endif

void SharkMemoryManager::setPoisonMemory(bool poison) {
  mm()->setPoisonMemory(poison);
}

unsigned char *SharkMemoryManager::allocateSpace(intptr_t Size,
                                                 unsigned int Alignment) {
  return mm()->allocateSpace(Size, Alignment);
}