Mercurial > hg > graal-compiler
view src/share/vm/runtime/osThread.cpp @ 1518:3bfae429e2cf
6948537: CMS: BOT walkers observe out-of-thin-air zeros on sun4v sparc/CMT
Summary: On sun4v/CMT avoid use of memset() in BOT updates so as to prevent concurrent BOT readers from seeing the phantom zeros arising from memset()'s use of BIS.
Reviewed-by: jmasa, johnc, minqi, poonam, tonyp
author | ysr |
---|---|
date | Mon, 03 May 2010 10:24:51 -0700 |
parents | a61af66fc99e |
children | c18cbe5936b8 |
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/* * Copyright 1997-2005 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. * */ # include "incls/_precompiled.incl" # include "incls/_osThread.cpp.incl" OSThread::OSThread(OSThreadStartFunc start_proc, void* start_parm) { pd_initialize(); set_start_proc(start_proc); set_start_parm(start_parm); set_interrupted(false); } OSThread::~OSThread() { pd_destroy(); } // Printing void OSThread::print_on(outputStream *st) const { st->print("nid=0x%lx ", thread_id()); switch (_state) { case ALLOCATED: st->print("allocated "); break; case INITIALIZED: st->print("initialized "); break; case RUNNABLE: st->print("runnable "); break; case MONITOR_WAIT: st->print("waiting for monitor entry "); break; case CONDVAR_WAIT: st->print("waiting on condition "); break; case OBJECT_WAIT: st->print("in Object.wait() "); break; case BREAKPOINTED: st->print("at breakpoint"); break; case SLEEPING: st->print("sleeping"); break; case ZOMBIE: st->print("zombie"); break; default: st->print("unknown state %d", _state); break; } }