Mercurial > hg > graal-compiler
diff src/os/bsd/vm/threadCritical_bsd.cpp @ 3960:f08d439fab8c
7089790: integrate bsd-port changes
Reviewed-by: kvn, twisti, jrose
Contributed-by: Kurt Miller <kurt@intricatesoftware.com>, Greg Lewis <glewis@eyesbeyond.com>, Jung-uk Kim <jkim@freebsd.org>, Christos Zoulas <christos@zoulas.com>, Landon Fuller <landonf@plausible.coop>, The FreeBSD Foundation <board@freebsdfoundation.org>, Michael Franz <mvfranz@gmail.com>, Roger Hoover <rhoover@apple.com>, Alexander Strange <astrange@apple.com>
author | never |
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date | Sun, 25 Sep 2011 16:03:29 -0700 |
parents | |
children | f34d701e952e |
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--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/src/os/bsd/vm/threadCritical_bsd.cpp Sun Sep 25 16:03:29 2011 -0700 @@ -0,0 +1,67 @@ +/* + * Copyright (c) 2001, 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. + * + */ + +#include "precompiled.hpp" +#include "runtime/threadCritical.hpp" +#include "thread_bsd.inline.hpp" + +// put OS-includes here +# include <pthread.h> + +// +// See threadCritical.hpp for details of this class. +// + +static pthread_t tc_owner = 0; +static pthread_mutex_t tc_mutex = PTHREAD_MUTEX_INITIALIZER; +static int tc_count = 0; + +void ThreadCritical::initialize() { +} + +void ThreadCritical::release() { +} + +ThreadCritical::ThreadCritical() { + pthread_t self = pthread_self(); + if (self != tc_owner) { + int ret = pthread_mutex_lock(&tc_mutex); + guarantee(ret == 0, "fatal error with pthread_mutex_lock()"); + assert(tc_count == 0, "Lock acquired with illegal reentry count."); + tc_owner = self; + } + tc_count++; +} + +ThreadCritical::~ThreadCritical() { + assert(tc_owner == pthread_self(), "must have correct owner"); + assert(tc_count > 0, "must have correct count"); + + tc_count--; + if (tc_count == 0) { + tc_owner = 0; + int ret = pthread_mutex_unlock(&tc_mutex); + guarantee(ret == 0, "fatal error with pthread_mutex_unlock()"); + } +}