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annotate src/os/linux/vm/threadCritical_linux.cpp @ 5017:0b781cdb0cfb
Use lower case http_proxy because this is the default environment variable on Linux
author | Christian Wimmer <Christian.Wimmer@Oracle.com> |
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date | Fri, 02 Mar 2012 09:23:18 -0800 |
parents | f95d63e2154a |
children | f34d701e952e |
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0 | 1 /* |
1972 | 2 * Copyright (c) 2001, 2010, Oracle and/or its affiliates. All rights reserved. |
0 | 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
4 * | |
5 * This code is free software; you can redistribute it and/or modify it | |
6 * under the terms of the GNU General Public License version 2 only, as | |
7 * published by the Free Software Foundation. | |
8 * | |
9 * This code is distributed in the hope that it will be useful, but WITHOUT | |
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
12 * version 2 for more details (a copy is included in the LICENSE file that | |
13 * accompanied this code). | |
14 * | |
15 * You should have received a copy of the GNU General Public License version | |
16 * 2 along with this work; if not, write to the Free Software Foundation, | |
17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. | |
18 * | |
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19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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20 * or visit www.oracle.com if you need additional information or have any |
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21 * questions. |
0 | 22 * |
23 */ | |
24 | |
1972 | 25 #include "precompiled.hpp" |
26 #include "runtime/threadCritical.hpp" | |
27 #include "thread_linux.inline.hpp" | |
0 | 28 |
29 // put OS-includes here | |
30 # include <pthread.h> | |
31 | |
32 // | |
33 // See threadCritical.hpp for details of this class. | |
34 // | |
35 | |
36 static pthread_t tc_owner = 0; | |
37 static pthread_mutex_t tc_mutex = PTHREAD_MUTEX_INITIALIZER; | |
38 static int tc_count = 0; | |
39 | |
40 void ThreadCritical::initialize() { | |
41 } | |
42 | |
43 void ThreadCritical::release() { | |
44 } | |
45 | |
46 ThreadCritical::ThreadCritical() { | |
47 pthread_t self = pthread_self(); | |
48 if (self != tc_owner) { | |
49 int ret = pthread_mutex_lock(&tc_mutex); | |
50 guarantee(ret == 0, "fatal error with pthread_mutex_lock()"); | |
51 assert(tc_count == 0, "Lock acquired with illegal reentry count."); | |
52 tc_owner = self; | |
53 } | |
54 tc_count++; | |
55 } | |
56 | |
57 ThreadCritical::~ThreadCritical() { | |
58 assert(tc_owner == pthread_self(), "must have correct owner"); | |
59 assert(tc_count > 0, "must have correct count"); | |
60 | |
61 tc_count--; | |
62 if (tc_count == 0) { | |
63 tc_owner = 0; | |
64 int ret = pthread_mutex_unlock(&tc_mutex); | |
65 guarantee(ret == 0, "fatal error with pthread_mutex_unlock()"); | |
66 } | |
67 } |