1/*
2 * Copyright (C) 2013 Google 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 are
6 * met:
7 *
8 *     * Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 *     * Redistributions in binary form must reproduce the above
11 * copyright notice, this list of conditions and the following disclaimer
12 * in the documentation and/or other materials provided with the
13 * distribution.
14 *     * Neither the name of Google Inc. nor the names of its
15 * contributors may be used to endorse or promote products derived from
16 * this software without specific prior written permission.
17 *
18 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
19 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
20 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
21 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
22 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
23 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
24 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
25 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
26 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
27 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
28 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
29 */
30
31#ifndef WTF_h
32#define WTF_h
33
34#include "wtf/Compiler.h"
35#include "wtf/CurrentTime.h"
36#include "wtf/PartitionAlloc.h"
37#include "wtf/WTFExport.h"
38
39namespace WTF {
40
41// This function must be called exactly once from the main thread before using anything else in WTF.
42WTF_EXPORT void initialize(TimeFunction currentTimeFunction, TimeFunction monotonicallyIncreasingTimeFunction);
43WTF_EXPORT void shutdown();
44WTF_EXPORT bool isShutdown();
45
46class WTF_EXPORT Partitions {
47public:
48    static void initialize();
49    static void shutdown();
50    static ALWAYS_INLINE PartitionRootGeneric* getBufferPartition()
51    {
52        if (UNLIKELY(!s_initialized))
53            initialize();
54        return m_bufferAllocator.root();
55    }
56
57private:
58    static bool s_initialized;
59    static PartitionAllocatorGeneric m_bufferAllocator;
60};
61
62} // namespace WTF
63
64#endif // WTF_h
65