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view src/os_cpu/solaris_sparc/vm/prefetch_solaris_sparc.inline.hpp @ 4712:e7dead7e90af
7117303: VM uses non-monotonic time source and complains that it is non-monotonic
Summary: Replaces calls to os::javaTimeMillis(), which does not (and cannot) guarantee monotonicity, in GC code to an equivalent expression that uses os::javaTimeNanos(). os::javaTimeNanos is guaranteed monotonically non-decreasing if the underlying platform provides a monotonic time source. Changes in OS files are to make use of the newly defined constants in globalDefinitions.hpp.
Reviewed-by: dholmes, ysr
author | johnc |
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date | Mon, 19 Dec 2011 10:02:05 -0800 |
parents | f95d63e2154a |
children |
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/* * Copyright (c) 2003, 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 OS_CPU_SOLARIS_SPARC_VM_PREFETCH_SOLARIS_SPARC_INLINE_HPP #define OS_CPU_SOLARIS_SPARC_VM_PREFETCH_SOLARIS_SPARC_INLINE_HPP #include "runtime/prefetch.hpp" #if defined(COMPILER2) || defined(_LP64) // For Sun Studio inplementation is in solaris_sparc.il // For gcc inplementation is just below extern "C" void _Prefetch_read (void *loc, intx interval); extern "C" void _Prefetch_write(void *loc, intx interval); inline void Prefetch::read(void *loc, intx interval) { _Prefetch_read(loc, interval); } inline void Prefetch::write(void *loc, intx interval) { _Prefetch_write(loc, interval); } #ifdef _GNU_SOURCE extern "C" { inline void _Prefetch_read (void *loc, intx interval) { __asm__ volatile ("prefetch [%0+%1], 0" : : "r" (loc), "r" (interval) : "memory" ); } inline void _Prefetch_write(void *loc, intx interval) { __asm__ volatile ("prefetch [%0+%1], 2" : : "r" (loc), "r" (interval) : "memory" ); } } #endif // _GNU_SOURCE #else // defined(COMPILER2) || defined(_LP64) inline void Prefetch::read (void *loc, intx interval) {} inline void Prefetch::write(void *loc, intx interval) {} #endif // defined(COMPILER2) || defined(_LP64) #endif // OS_CPU_SOLARIS_SPARC_VM_PREFETCH_SOLARIS_SPARC_INLINE_HPP