1 /*
2 * Copyright (C) 2010 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
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 *
14 * THIS SOFTWARE IS PROVIDED BY APPLE AND ITS CONTRIBUTORS "AS IS" AND ANY
15 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
16 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
17 * DISCLAIMED. IN NO EVENT SHALL APPLE OR ITS CONTRIBUTORS BE LIABLE FOR ANY
18 * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
19 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
20 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
21 * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
22 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
23 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
24 */
25
26 #include "config.h"
27
28 #include "TreeTestHelpers.h"
29
30 #include <cstdlib>
31 #include <wtf/CurrentTime.h>
32
33 namespace WebCore {
34 namespace TreeTestHelpers {
35
generateSeed()36 int32_t generateSeed()
37 {
38 // A seed of 1 has the special behavior of resetting the random
39 // number generator. Assume that if we call this routine that we
40 // don't want this behavior.
41 int32_t seed;
42 do {
43 seed = static_cast<int32_t>(currentTime());
44 } while (seed <= 1);
45 return seed;
46 }
47
initRandom(const int32_t seed)48 void initRandom(const int32_t seed)
49 {
50 srand(seed);
51 }
52
nextRandom(const int32_t maximumValue)53 int32_t nextRandom(const int32_t maximumValue)
54 {
55 // rand_r is not available on Windows
56 return rand() % maximumValue;
57 }
58
59 } // namespace TreeTestHelpers
60 } // namespace WebCore
61