Mercurial > hg > truffle
view src/os/solaris/vm/threadCritical_solaris.cpp @ 670:c7bbabdcadfb
Merge
author | phh |
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date | Tue, 24 Mar 2009 19:05:23 -0700 |
parents | a61af66fc99e |
children | f03d0a26bf83 |
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/* * Copyright 2001-2003 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. * */ #include "incls/_precompiled.incl" #include "incls/_threadCritical_solaris.cpp.incl" // OS-includes here #include <thread.h> #include <synch.h> // // See threadCritical.hpp for details of this class. // // For some reason, we don't do locking until the // os::init() call completes. I'm not sure why this // is, and have left it that way for now. This should // be reviewed later. static mutex_t global_mut; static thread_t global_mut_owner = -1; static int global_mut_count = 0; static bool initialized = false; ThreadCritical::ThreadCritical() { if (initialized) { thread_t owner = thr_self(); if (global_mut_owner != owner) { if (os::Solaris::mutex_lock(&global_mut)) fatal1("ThreadCritical::ThreadCritical: mutex_lock failed (%s)", strerror(errno)); assert(global_mut_count == 0, "must have clean count"); assert(global_mut_owner == -1, "must have clean owner"); } global_mut_owner = owner; ++global_mut_count; } else { assert (Threads::number_of_threads() == 0, "valid only during initialization"); } } ThreadCritical::~ThreadCritical() { if (initialized) { assert(global_mut_owner == thr_self(), "must have correct owner"); assert(global_mut_count > 0, "must have correct count"); --global_mut_count; if (global_mut_count == 0) { global_mut_owner = -1; if (os::Solaris::mutex_unlock(&global_mut)) fatal1("ThreadCritical::~ThreadCritical: mutex_unlock failed (%s)", strerror(errno)); } } else { assert (Threads::number_of_threads() == 0, "valid only during initialization"); } } void ThreadCritical::initialize() { // This method is called at the end of os::init(). Until // then, we don't do real locking. initialized = true; } void ThreadCritical::release() { }