Mercurial > hg > truffle
view src/cpu/x86/vm/copy_x86.hpp @ 1213:6deeaebad47a
6902182: 4/4 Starting with jdwp agent should not incur performance penalty
Summary: Rename can_post_exceptions support to can_post_on_exceptions. Add support for should_post_on_exceptions flag to permit per JavaThread optimizations.
Reviewed-by: never, kvn, dcubed
Contributed-by: tom.deneau@amd.com
author | dcubed |
---|---|
date | Mon, 01 Feb 2010 17:35:05 -0700 |
parents | a61af66fc99e |
children | c18cbe5936b8 |
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/* * Copyright 2003-2004 Sun Microsystems, Inc. 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 Sun Microsystems, Inc., 4150 Network Circle, Santa Clara, * CA 95054 USA or visit www.sun.com if you need additional information or * have any questions. * */ // Inline functions for memory copy and fill. // Contains inline asm implementations #include "incls/_copy_pd.inline.hpp.incl" static void pd_fill_to_words(HeapWord* tohw, size_t count, juint value) { #ifdef AMD64 julong* to = (julong*) tohw; julong v = ((julong) value << 32) | value; while (count-- > 0) { *to++ = v; } #else juint* to = (juint*)tohw; count *= HeapWordSize / BytesPerInt; while (count-- > 0) { *to++ = value; } #endif // AMD64 } static void pd_fill_to_aligned_words(HeapWord* tohw, size_t count, juint value) { pd_fill_to_words(tohw, count, value); } static void pd_fill_to_bytes(void* to, size_t count, jubyte value) { (void)memset(to, value, count); } static void pd_zero_to_words(HeapWord* tohw, size_t count) { pd_fill_to_words(tohw, count, 0); } static void pd_zero_to_bytes(void* to, size_t count) { (void)memset(to, 0, count); }