jdk8-mips64-public/hotspot: src/os/aix/vm/threadCritical

     1 /*

     2  * Copyright (c) 2001, 2013, Oracle and/or its affiliates. All rights reserved.

     3  * Copyright 2012, 2013 SAP AG. All rights reserved.

     4  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.

     5  *

     6  * This code is free software; you can redistribute it and/or modify it

     7  * under the terms of the GNU General Public License version 2 only, as

     8  * published by the Free Software Foundation.

     9  *

    10  * This code is distributed in the hope that it will be useful, but WITHOUT

    11  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or

    12  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License

    13  * version 2 for more details (a copy is included in the LICENSE file that

    14  * accompanied this code).

    15  *

    16  * You should have received a copy of the GNU General Public License version

    17  * 2 along with this work; if not, write to the Free Software Foundation,

    18  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.

    19  *

    20  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA

    21  * or visit www.oracle.com if you need additional information or have any

    22  * questions.

    23  *

    24  */

    26 #include "precompiled.hpp"

    27 #include "runtime/threadCritical.hpp"

    28 #include "thread_aix.inline.hpp"

    30 // put OS-includes here

    31 # include <pthread.h>

    33 //

    34 // See threadCritical.hpp for details of this class.

    35 //

    37 static pthread_t             tc_owner = 0;

    38 static pthread_mutex_t       tc_mutex = PTHREAD_MUTEX_INITIALIZER;

    39 static int                   tc_count = 0;

    41 void ThreadCritical::initialize() {

    42 }

    44 void ThreadCritical::release() {

    45 }

    47 ThreadCritical::ThreadCritical() {

    48   pthread_t self = pthread_self();

    49   if (self != tc_owner) {

    50     int ret = pthread_mutex_lock(&tc_mutex);

    51     guarantee(ret == 0, "fatal error with pthread_mutex_lock()");

    52     assert(tc_count == 0, "Lock acquired with illegal reentry count.");

    53     tc_owner = self;

    54   }

    55   tc_count++;

    56 }

    58 ThreadCritical::~ThreadCritical() {

    59   assert(tc_owner == pthread_self(), "must have correct owner");

    60   assert(tc_count > 0, "must have correct count");

    62   tc_count--;

    63   if (tc_count == 0) {

    64     tc_owner = 0;

    65     int ret = pthread_mutex_unlock(&tc_mutex);

    66     guarantee(ret == 0, "fatal error with pthread_mutex_unlock()");

    67   }

    68 }

src/os/aix/vm/threadCritical_aix.cpp@666e6ce3976c