Source/WebKit/chromium/tests/TreeTestHelpers.cpp

/*
 * Copyright (C) 2010 Google Inc. All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
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 *
 * 1.  Redistributions of source code must retain the above copyright
 *     notice, this list of conditions and the following disclaimer.
 * 2.  Redistributions in binary form must reproduce the above copyright
 *     notice, this list of conditions and the following disclaimer in the
 *     documentation and/or other materials provided with the distribution.
 *
 * THIS SOFTWARE IS PROVIDED BY APPLE AND ITS CONTRIBUTORS "AS IS" AND ANY
 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
 * DISCLAIMED. IN NO EVENT SHALL APPLE OR ITS CONTRIBUTORS BE LIABLE FOR ANY
 * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
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#include "config.h"

#include "TreeTestHelpers.h"

#include <cstdlib>
#include <wtf/CurrentTime.h>

namespace WebCore {
namespace TreeTestHelpers {

int32_t generateSeed()
{
    // A seed of 1 has the special behavior of resetting the random
    // number generator. Assume that if we call this routine that we
    // don't want this behavior.
    int32_t seed;
    do {
        seed = static_cast<int32_t>(currentTime());
    } while (seed <= 1);
    return seed;
}

void initRandom(const int32_t seed)
{
    srand(seed);
}

int32_t nextRandom(const int32_t maximumValue)
{
    // rand_r is not available on Windows
    return rand() % maximumValue;
}

} // namespace TreeTestHelpers
} // namespace WebCore