view src/share/vm/asm/assembler.inline.hpp @ 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 2f644f85485d
children 6ab62ad83507
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/*
 * Copyright (c) 1997, 2010, Oracle and/or its affiliates. All rights reserved.
 * 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_ASM_ASSEMBLER_INLINE_HPP
#define SHARE_VM_ASM_ASSEMBLER_INLINE_HPP

#include "asm/assembler.hpp"
#include "asm/codeBuffer.hpp"
#include "compiler/disassembler.hpp"
#include "runtime/threadLocalStorage.hpp"

inline void AbstractAssembler::sync() {
  CodeSection* cs = code_section();
  guarantee(cs->start() == _code_begin, "must not shift code buffer");
  cs->set_end(_code_pos);
}

inline void AbstractAssembler::emit_byte(int x) {
  assert(isByte(x), "not a byte");
  *(unsigned char*)_code_pos = (unsigned char)x;
  _code_pos += sizeof(unsigned char);
  sync();
}


inline void AbstractAssembler::emit_word(int x) {
  *(short*)_code_pos = (short)x;
  _code_pos += sizeof(short);
  sync();
}


inline void AbstractAssembler::emit_long(jint x) {
  *(jint*)_code_pos = x;
  _code_pos += sizeof(jint);
  sync();
}

inline void AbstractAssembler::emit_address(address x) {
  *(address*)_code_pos = x;
  _code_pos += sizeof(address);
  sync();
}

inline address AbstractAssembler::inst_mark() const {
  return code_section()->mark();
}


inline void AbstractAssembler::set_inst_mark() {
  code_section()->set_mark();
}


inline void AbstractAssembler::clear_inst_mark() {
  code_section()->clear_mark();
}


inline void AbstractAssembler::relocate(RelocationHolder const& rspec, int format) {
  assert(!pd_check_instruction_mark()
         || inst_mark() == NULL || inst_mark() == _code_pos,
         "call relocate() between instructions");
  code_section()->relocate(_code_pos, rspec, format);
}


inline CodeBuffer* AbstractAssembler::code() const {
  return code_section()->outer();
}

inline int AbstractAssembler::sect() const {
  return code_section()->index();
}

inline int AbstractAssembler::locator() const {
  return CodeBuffer::locator(offset(), sect());
}

inline address AbstractAssembler::target(Label& L) {
  return code_section()->target(L, pc());
}

inline int Label::loc_pos() const {
  return CodeBuffer::locator_pos(loc());
}

inline int Label::loc_sect() const {
  return CodeBuffer::locator_sect(loc());
}

inline void Label::bind_loc(int pos, int sect) {
  bind_loc(CodeBuffer::locator(pos, sect));
}

#endif // SHARE_VM_ASM_ASSEMBLER_INLINE_HPP