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 *
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 * notice, this list of conditions and the following disclaimer in the
12 * documentation and/or other materials provided with the distribution.
13 * 3. Neither the name of Apple Computer, Inc. ("Apple") nor the names of
14 * its contributors may be used to endorse or promote products derived
15 * from this software without specific prior written permission.
16 *
17 * THIS SOFTWARE IS PROVIDED BY APPLE AND ITS CONTRIBUTORS "AS IS" AND ANY
18 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
19 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
20 * DISCLAIMED. IN NO EVENT SHALL APPLE OR ITS CONTRIBUTORS BE LIABLE FOR ANY
21 * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
22 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
23 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
24 * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
25 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
26 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
27 */
28
29 #include "config.h"
30 #include "InitializeThreading.h"
31
32 #include "Heap.h"
33 #include "dtoa.h"
34 #include "Identifier.h"
35 #include "JSGlobalObject.h"
36 #include "UString.h"
37 #include <wtf/DateMath.h>
38 #include <wtf/Threading.h>
39 #include <wtf/WTFThreadData.h>
40
41 using namespace WTF;
42
43 namespace JSC {
44
45 #if OS(DARWIN) && ENABLE(JSC_MULTIPLE_THREADS)
46 static pthread_once_t initializeThreadingKeyOnce = PTHREAD_ONCE_INIT;
47 #endif
48
initializeThreadingOnce()49 static void initializeThreadingOnce()
50 {
51 // StringImpl::empty() does not construct its static string in a threadsafe fashion,
52 // so ensure it has been initialized from here.
53 StringImpl::empty();
54
55 WTF::initializeThreading();
56 wtfThreadData();
57 JSGlobalData::storeVPtrs();
58 #if ENABLE(JSC_MULTIPLE_THREADS)
59 s_dtoaP5Mutex = new Mutex;
60 initializeDates();
61 RegisterFile::initializeThreading();
62 #endif
63 }
64
initializeThreading()65 void initializeThreading()
66 {
67 #if OS(DARWIN) && ENABLE(JSC_MULTIPLE_THREADS)
68 pthread_once(&initializeThreadingKeyOnce, initializeThreadingOnce);
69 #else
70 static bool initializedThreading = false;
71 if (!initializedThreading) {
72 initializeThreadingOnce();
73 initializedThreading = true;
74 }
75 #endif
76 }
77
78 } // namespace JSC
79