Mercurial > hg > truffle
view src/os_cpu/linux_x86/vm/os_linux_x86.hpp @ 12169:29aa8936f03c
8023597: Optimize G1 barriers code for unsafe load_store
Summary: Avoid loading old values in G1 pre-barriers for inlined unsafe load_store nodes.
Reviewed-by: kvn, tonyp
Contributed-by: Martin Doerr <martin.doerr@sap.com>
author | kvn |
---|---|
date | Wed, 28 Aug 2013 11:22:43 +0200 |
parents | b9a9ed0f8eeb |
children | 899ecf76b570 |
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/* * Copyright (c) 1999, 2012, 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 OS_CPU_LINUX_X86_VM_OS_LINUX_X86_HPP #define OS_CPU_LINUX_X86_VM_OS_LINUX_X86_HPP static void setup_fpu(); static bool supports_sse(); static jlong rdtsc(); static bool is_allocatable(size_t bytes); // Used to register dynamic code cache area with the OS // Note: Currently only used in 64 bit Windows implementations static bool register_code_area(char *low, char *high) { return true; } #endif // OS_CPU_LINUX_X86_VM_OS_LINUX_X86_HPP