Mercurial > hg > graal-compiler
view src/share/vm/runtime/prefetch.hpp @ 1438:a7a0ef3c6858
Added timing printout on VM shutdown.
author | Thomas Wuerthinger <wuerthinger@ssw.jku.at> |
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date | Mon, 25 Oct 2010 18:35:34 +0200 |
parents | a61af66fc99e |
children | c18cbe5936b8 |
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/* * Copyright 2003 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. * */ // If calls to prefetch methods are in a loop, the loop should be cloned // such that if Prefetch{Scan,Copy}Interval and/or PrefetchFieldInterval // say not to do prefetching, these methods aren't called. At the very // least, they take up a memory issue slot. They should be implemented // as inline assembly code: doing an actual call isn't worth the cost. class Prefetch : AllStatic { public: enum style { do_none, // Do no prefetching do_read, // Do read prefetching do_write // Do write prefetching }; // Prefetch anticipating read; must not fault, semantically a no-op static void read(void* loc, intx interval); // Prefetch anticipating write; must not fault, semantically a no-op static void write(void* loc, intx interval); };