Mercurial > hg > truffle
comparison src/os/linux/vm/threadCritical_linux.cpp @ 0:a61af66fc99e jdk7-b24
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author | duke |
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date | Sat, 01 Dec 2007 00:00:00 +0000 |
parents | |
children | c18cbe5936b8 |
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-1:000000000000 | 0:a61af66fc99e |
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1 /* | |
2 * Copyright 2001-2006 Sun Microsystems, Inc. All Rights Reserved. | |
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 * | |
19 * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara, | |
20 * CA 95054 USA or visit www.sun.com if you need additional information or | |
21 * have any questions. | |
22 * | |
23 */ | |
24 | |
25 #include "incls/_precompiled.incl" | |
26 #include "incls/_threadCritical_linux.cpp.incl" | |
27 | |
28 // put OS-includes here | |
29 # include <pthread.h> | |
30 | |
31 // | |
32 // See threadCritical.hpp for details of this class. | |
33 // | |
34 | |
35 static pthread_t tc_owner = 0; | |
36 static pthread_mutex_t tc_mutex = PTHREAD_MUTEX_INITIALIZER; | |
37 static int tc_count = 0; | |
38 | |
39 void ThreadCritical::initialize() { | |
40 } | |
41 | |
42 void ThreadCritical::release() { | |
43 } | |
44 | |
45 ThreadCritical::ThreadCritical() { | |
46 pthread_t self = pthread_self(); | |
47 if (self != tc_owner) { | |
48 int ret = pthread_mutex_lock(&tc_mutex); | |
49 guarantee(ret == 0, "fatal error with pthread_mutex_lock()"); | |
50 assert(tc_count == 0, "Lock acquired with illegal reentry count."); | |
51 tc_owner = self; | |
52 } | |
53 tc_count++; | |
54 } | |
55 | |
56 ThreadCritical::~ThreadCritical() { | |
57 assert(tc_owner == pthread_self(), "must have correct owner"); | |
58 assert(tc_count > 0, "must have correct count"); | |
59 | |
60 tc_count--; | |
61 if (tc_count == 0) { | |
62 tc_owner = 0; | |
63 int ret = pthread_mutex_unlock(&tc_mutex); | |
64 guarantee(ret == 0, "fatal error with pthread_mutex_unlock()"); | |
65 } | |
66 } |