| /* |
| * 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/thread.inline.hpp" |
| #include "runtime/threadCritical.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()"); |
| } |
| } |