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#include "config.h"
32#include "WTF.h"
33
34#include "wtf/DefaultAllocator.h"
35#include "wtf/FastMalloc.h"
36
37namespace WTF {
38
39extern void initializeThreading();
40
41bool s_initialized;
42bool s_shutdown;
43bool Partitions::s_initialized;
44PartitionAllocatorGeneric Partitions::m_bufferAllocator;
45
46void initialize(TimeFunction currentTimeFunction, TimeFunction monotonicallyIncreasingTimeFunction)
47{
48    // WTF, and Blink in general, cannot handle being re-initialized, even if shutdown first.
49    // Make that explicit here.
50    ASSERT(!s_initialized);
51    ASSERT(!s_shutdown);
52    s_initialized = true;
53    Partitions::initialize();
54    setCurrentTimeFunction(currentTimeFunction);
55    setMonotonicallyIncreasingTimeFunction(monotonicallyIncreasingTimeFunction);
56    initializeThreading();
57}
58
59void shutdown()
60{
61    ASSERT(s_initialized);
62    ASSERT(!s_shutdown);
63    s_shutdown = true;
64    Partitions::shutdown();
65}
66
67bool isShutdown()
68{
69    return s_shutdown;
70}
71
72void Partitions::initialize()
73{
74    static int lock = 0;
75    // Guard against two threads hitting here in parallel.
76    spinLockLock(&lock);
77    if (!s_initialized) {
78        m_bufferAllocator.init();
79        s_initialized = true;
80    }
81    spinLockUnlock(&lock);
82}
83
84void Partitions::shutdown()
85{
86    fastMallocShutdown();
87    m_bufferAllocator.shutdown();
88}
89
90} // namespace WTF
91