Mercurial > hg > truffle
annotate src/os/solaris/vm/threadCritical_solaris.cpp @ 4952:15085a6eb50c
Merge
author | never |
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date | Fri, 17 Feb 2012 12:18:52 -0800 |
parents | f95d63e2154a |
children | f34d701e952e |
rev | line source |
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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_solaris.inline.hpp" | |
0 | 28 |
29 // OS-includes here | |
30 #include <thread.h> | |
31 #include <synch.h> | |
32 | |
33 // | |
34 // See threadCritical.hpp for details of this class. | |
35 // | |
36 // For some reason, we don't do locking until the | |
37 // os::init() call completes. I'm not sure why this | |
38 // is, and have left it that way for now. This should | |
39 // be reviewed later. | |
40 | |
41 static mutex_t global_mut; | |
42 static thread_t global_mut_owner = -1; | |
43 static int global_mut_count = 0; | |
44 static bool initialized = false; | |
45 | |
46 ThreadCritical::ThreadCritical() { | |
47 if (initialized) { | |
48 thread_t owner = thr_self(); | |
49 if (global_mut_owner != owner) { | |
50 if (os::Solaris::mutex_lock(&global_mut)) | |
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51 fatal(err_msg("ThreadCritical::ThreadCritical: mutex_lock failed (%s)", |
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52 strerror(errno))); |
0 | 53 assert(global_mut_count == 0, "must have clean count"); |
54 assert(global_mut_owner == -1, "must have clean owner"); | |
55 } | |
56 global_mut_owner = owner; | |
57 ++global_mut_count; | |
58 } else { | |
59 assert (Threads::number_of_threads() == 0, "valid only during initialization"); | |
60 } | |
61 } | |
62 | |
63 ThreadCritical::~ThreadCritical() { | |
64 if (initialized) { | |
65 assert(global_mut_owner == thr_self(), "must have correct owner"); | |
66 assert(global_mut_count > 0, "must have correct count"); | |
67 --global_mut_count; | |
68 if (global_mut_count == 0) { | |
69 global_mut_owner = -1; | |
70 if (os::Solaris::mutex_unlock(&global_mut)) | |
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71 fatal(err_msg("ThreadCritical::~ThreadCritical: mutex_unlock failed " |
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72 "(%s)", strerror(errno))); |
0 | 73 } |
74 } else { | |
75 assert (Threads::number_of_threads() == 0, "valid only during initialization"); | |
76 } | |
77 } | |
78 | |
79 void ThreadCritical::initialize() { | |
80 // This method is called at the end of os::init(). Until | |
81 // then, we don't do real locking. | |
82 initialized = true; | |
83 } | |
84 | |
85 void ThreadCritical::release() { | |
86 } |