Mercurial > hg > truffle
comparison src/os/aix/vm/threadCritical_aix.cpp @ 14415:666e6ce3976c
8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
Reviewed-by: kvn
author | simonis |
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date | Fri, 06 Sep 2013 20:16:09 +0200 |
parents | |
children | 71a71b0bc844 |
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14414:b83f7d608548 | 14415:666e6ce3976c |
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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 */ | |
25 | |
26 #include "precompiled.hpp" | |
27 #include "runtime/threadCritical.hpp" | |
28 #include "thread_aix.inline.hpp" | |
29 | |
30 // put OS-includes here | |
31 # include <pthread.h> | |
32 | |
33 // | |
34 // See threadCritical.hpp for details of this class. | |
35 // | |
36 | |
37 static pthread_t tc_owner = 0; | |
38 static pthread_mutex_t tc_mutex = PTHREAD_MUTEX_INITIALIZER; | |
39 static int tc_count = 0; | |
40 | |
41 void ThreadCritical::initialize() { | |
42 } | |
43 | |
44 void ThreadCritical::release() { | |
45 } | |
46 | |
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 } | |
57 | |
58 ThreadCritical::~ThreadCritical() { | |
59 assert(tc_owner == pthread_self(), "must have correct owner"); | |
60 assert(tc_count > 0, "must have correct count"); | |
61 | |
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 } |