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 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 48 void initRandom(const int32_t seed) 49 { 50 srand(seed); 51 } 52 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
