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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 b92c45f2bc75
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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_RUNTIME_FRAME_INLINE_HPP
#define SHARE_VM_RUNTIME_FRAME_INLINE_HPP

#include "interpreter/bytecodeInterpreter.hpp"
#include "interpreter/bytecodeInterpreter.inline.hpp"
#include "interpreter/interpreter.hpp"
#include "oops/methodOop.hpp"
#include "runtime/frame.hpp"
#include "runtime/signature.hpp"
#ifdef TARGET_ARCH_x86
# include "jniTypes_x86.hpp"
#endif
#ifdef TARGET_ARCH_sparc
# include "jniTypes_sparc.hpp"
#endif
#ifdef TARGET_ARCH_zero
# include "jniTypes_zero.hpp"
#endif
#ifdef ZERO
#ifdef TARGET_ARCH_zero
# include "entryFrame_zero.hpp"
# include "fakeStubFrame_zero.hpp"
# include "interpreterFrame_zero.hpp"
# include "sharkFrame_zero.hpp"
#endif
#endif

// This file holds platform-independent bodies of inline functions for frames.

// Note: The bcx usually contains the bcp; however during GC it contains the bci
//       (changed by gc_prologue() and gc_epilogue()) to be methodOop position
//       independent. These accessors make sure the correct value is returned
//       by testing the range of the bcx value. bcp's are guaranteed to be above
//       max_method_code_size, since methods are always allocated in OldSpace and
//       Eden is allocated before OldSpace.
//
//       The bcp is accessed sometimes during GC for ArgumentDescriptors; than
//       the correct translation has to be performed (was bug).

inline bool frame::is_bci(intptr_t bcx) {
#ifdef _LP64
  return ((uintptr_t) bcx) <= ((uintptr_t) max_method_code_size) ;
#else
  return 0 <= bcx && bcx <= max_method_code_size;
#endif
}

inline bool frame::is_entry_frame() const {
  return StubRoutines::returns_to_call_stub(pc());
}

inline bool frame::is_first_frame() const {
  return is_entry_frame() && entry_frame_is_first();
}

// here are the platform-dependent bodies:

#ifdef TARGET_ARCH_x86
# include "frame_x86.inline.hpp"
#endif
#ifdef TARGET_ARCH_sparc
# include "frame_sparc.inline.hpp"
#endif
#ifdef TARGET_ARCH_zero
# include "frame_zero.inline.hpp"
#endif


#endif // SHARE_VM_RUNTIME_FRAME_INLINE_HPP