Mercurial > hg > graal-compiler

comparison src/os/bsd/vm/threadCritical_bsd.cpp @ 3960:f08d439fab8c

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
7089790: integrate bsd-port changes Reviewed-by: kvn, twisti, jrose Contributed-by: Kurt Miller <kurt@intricatesoftware.com>, Greg Lewis <glewis@eyesbeyond.com>, Jung-uk Kim <jkim@freebsd.org>, Christos Zoulas <christos@zoulas.com>, Landon Fuller <landonf@plausible.coop>, The FreeBSD Foundation <board@freebsdfoundation.org>, Michael Franz <mvfranz@gmail.com>, Roger Hoover <rhoover@apple.com>, Alexander Strange <astrange@apple.com>
author never
date Sun, 25 Sep 2011 16:03:29 -0700
parents
children f34d701e952e
comparison
equal deleted inserted replaced
3959:eda6988c0d81 3960:f08d439fab8c
1 /*
2 * Copyright (c) 2001, 2010, Oracle and/or its affiliates. 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 Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
20 * or visit www.oracle.com if you need additional information or have any
21 * questions.
22 *
23 */
24
25 #include "precompiled.hpp"
26 #include "runtime/threadCritical.hpp"
27 #include "thread_bsd.inline.hpp"
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 }