1 /*
2 * Copyright (C) 2008 Apple Inc. All Rights Reserved.
3 *
4 * Redistribution and use in source and binary forms, with or without
5 * modification, are permitted provided that the following conditions
6 * are met:
7 * 1. Redistributions of source code must retain the above copyright
8 * notice, this list of conditions and the following disclaimer.
9 * 2. Redistributions in binary form must reproduce the above copyright
10 * notice, this list of conditions and the following disclaimer in the
11 * documentation and/or other materials provided with the distribution.
12 *
13 * THIS SOFTWARE IS PROVIDED BY APPLE COMPUTER, INC. ``AS IS'' AND ANY
14 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
15 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
16 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE COMPUTER, INC. OR
17 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
18 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
19 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
20 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
21 * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
22 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
23 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
24 *
25 */
26
27 #ifndef WTFThreadData_h
28 #define WTFThreadData_h
29
30 #include "wtf/HashMap.h"
31 #include "wtf/HashSet.h"
32 #include "wtf/Noncopyable.h"
33 #include "wtf/ThreadSpecific.h"
34 #include "wtf/Threading.h"
35 #include "wtf/WTFExport.h"
36 #include "wtf/text/StringHash.h"
37
38 namespace WTF {
39
40 class AtomicStringTable;
41 struct ICUConverterWrapper;
42
43 typedef void (*AtomicStringTableDestructor)(AtomicStringTable*);
44
45 class WTF_EXPORT WTFThreadData {
46 WTF_MAKE_NONCOPYABLE(WTFThreadData);
47 public:
48 WTFThreadData();
49 ~WTFThreadData();
50
atomicStringTable()51 AtomicStringTable* atomicStringTable()
52 {
53 return m_atomicStringTable;
54 }
55
cachedConverterICU()56 ICUConverterWrapper& cachedConverterICU() { return *m_cachedConverterICU; }
57
58 private:
59 AtomicStringTable* m_atomicStringTable;
60 AtomicStringTableDestructor m_atomicStringTableDestructor;
61 OwnPtr<ICUConverterWrapper> m_cachedConverterICU;
62
63 static ThreadSpecific<WTFThreadData>* staticData;
64 friend WTFThreadData& wtfThreadData();
65 friend class AtomicStringTable;
66 };
67
wtfThreadData()68 inline WTFThreadData& wtfThreadData()
69 {
70 // WRT WebCore:
71 // WTFThreadData is used on main thread before it could possibly be used
72 // on secondary ones, so there is no need for synchronization here.
73 // WRT JavaScriptCore:
74 // wtfThreadData() is initially called from initializeThreading(), ensuring
75 // this is initially called in a pthread_once locked context.
76 if (!WTFThreadData::staticData)
77 WTFThreadData::staticData = new ThreadSpecific<WTFThreadData>;
78 return **WTFThreadData::staticData;
79 }
80
81 } // namespace WTF
82
83 using WTF::WTFThreadData;
84 using WTF::wtfThreadData;
85
86 #endif // WTFThreadData_h
87