Mercurial > hg > graal-compiler
comparison src/os/solaris/vm/threadCritical_solaris.cpp @ 0:a61af66fc99e jdk7-b24
Initial load
author | duke |
---|---|
date | Sat, 01 Dec 2007 00:00:00 +0000 |
parents | |
children | f03d0a26bf83 |
comparison
equal
deleted
inserted
replaced
-1:000000000000 | 0:a61af66fc99e |
---|---|
1 /* | |
2 * Copyright 2001-2003 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_solaris.cpp.incl" | |
27 | |
28 // OS-includes here | |
29 #include <thread.h> | |
30 #include <synch.h> | |
31 | |
32 // | |
33 // See threadCritical.hpp for details of this class. | |
34 // | |
35 // For some reason, we don't do locking until the | |
36 // os::init() call completes. I'm not sure why this | |
37 // is, and have left it that way for now. This should | |
38 // be reviewed later. | |
39 | |
40 static mutex_t global_mut; | |
41 static thread_t global_mut_owner = -1; | |
42 static int global_mut_count = 0; | |
43 static bool initialized = false; | |
44 | |
45 ThreadCritical::ThreadCritical() { | |
46 if (initialized) { | |
47 thread_t owner = thr_self(); | |
48 if (global_mut_owner != owner) { | |
49 if (os::Solaris::mutex_lock(&global_mut)) | |
50 fatal1("ThreadCritical::ThreadCritical: mutex_lock failed (%s)", strerror(errno)); | |
51 assert(global_mut_count == 0, "must have clean count"); | |
52 assert(global_mut_owner == -1, "must have clean owner"); | |
53 } | |
54 global_mut_owner = owner; | |
55 ++global_mut_count; | |
56 } else { | |
57 assert (Threads::number_of_threads() == 0, "valid only during initialization"); | |
58 } | |
59 } | |
60 | |
61 ThreadCritical::~ThreadCritical() { | |
62 if (initialized) { | |
63 assert(global_mut_owner == thr_self(), "must have correct owner"); | |
64 assert(global_mut_count > 0, "must have correct count"); | |
65 --global_mut_count; | |
66 if (global_mut_count == 0) { | |
67 global_mut_owner = -1; | |
68 if (os::Solaris::mutex_unlock(&global_mut)) | |
69 fatal1("ThreadCritical::~ThreadCritical: mutex_unlock failed (%s)", strerror(errno)); | |
70 } | |
71 } else { | |
72 assert (Threads::number_of_threads() == 0, "valid only during initialization"); | |
73 } | |
74 } | |
75 | |
76 void ThreadCritical::initialize() { | |
77 // This method is called at the end of os::init(). Until | |
78 // then, we don't do real locking. | |
79 initialized = true; | |
80 } | |
81 | |
82 void ThreadCritical::release() { | |
83 } |