X-Git-Url: https://git.saurik.com/apple/javascriptcore.git/blobdiff_plain/1df5f87f1309a8daa30dabdee855f48ae40d14ab..6fe7ccc865dc7d7541b93c5bcaf6368d2c98a174:/wtf/RandomNumber.cpp?ds=inline

diff --git a/wtf/RandomNumber.cpp b/wtf/RandomNumber.cpp
deleted file mode 100644
index 490c591..0000000
--- a/wtf/RandomNumber.cpp
+++ /dev/null
@@ -1,103 +0,0 @@
-/*
- * Copyright (C) 2006, 2007, 2008 Apple Inc. All rights reserved.
- *           (C) 2008, 2009 Torch Mobile Inc. All rights reserved. (http://www.torchmobile.com/)
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- * 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 COMPUTER, INC. ``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 COMPUTER, INC. OR
- * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
- * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
- * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
- * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
- * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
- * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
- * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 
- */
-
-#include "config.h"
-#include "RandomNumber.h"
-
-#include "CryptographicallyRandomNumber.h"
-#include "RandomNumberSeed.h"
-
-#include <limits>
-#include <limits.h>
-#include <stdint.h>
-#include <stdlib.h>
-
-#if USE(MERSENNE_TWISTER_19937)
-extern "C" {
-#include "mt19937ar.c"
-}
-#endif
-
-#if PLATFORM(BREWMP)
-#include <AEEAppGen.h>
-#include <AEESource.h>
-#include <AEEStdLib.h>
-#include <wtf/brew/RefPtrBrew.h>
-#include <wtf/brew/ShellBrew.h>
-#endif
-
-namespace WTF {
-
-double randomNumber()
-{
-#if USE(OS_RANDOMNESS)
-    uint32_t bits = cryptographicallyRandomNumber();
-    return static_cast<double>(bits) / (static_cast<double>(std::numeric_limits<uint32_t>::max()) + 1.0);
-#else
-    // Without OS_RANDOMNESS, we fall back to other random number generators
-    // that might not be cryptographically secure. Ideally, most ports would
-    // define USE(OS_RANDOMNESS).
-
-#if !ENABLE(WTF_MULTIPLE_THREADS)
-    static bool s_initialized = false;
-    if (!s_initialized) {
-        initializeRandomNumberGenerator();
-        s_initialized = true;
-    }
-#endif
-
-#if USE(MERSENNE_TWISTER_19937)
-    return genrand_res53();
-#elif PLATFORM(BREWMP)
-    uint32_t bits;
-    // Is this a cryptographically strong source of random numbers? If so, we
-    // should move this into OSRandomSource.
-    // http://csrc.nist.gov/groups/STM/cmvp/documents/140-1/140sp/140sp851.pdf
-    // is slightly unclear on this point, although it seems to imply that it is
-    // secure.
-    RefPtr<ISource> randomSource = createRefPtrInstance<ISource>(AEECLSID_RANDOM);
-    ISOURCE_Read(randomSource.get(), reinterpret_cast<char*>(&bits), 4);
-
-    return static_cast<double>(bits) / (static_cast<double>(std::numeric_limits<uint32_t>::max()) + 1.0);
-#else
-    uint32_t part1 = rand() & (RAND_MAX - 1);
-    uint32_t part2 = rand() & (RAND_MAX - 1);
-    // rand only provides 31 bits, and the low order bits of that aren't very random
-    // so we take the high 26 bits of part 1, and the high 27 bits of part2.
-    part1 >>= 5; // drop the low 5 bits
-    part2 >>= 4; // drop the low 4 bits
-    uint64_t fullRandom = part1;
-    fullRandom <<= 27;
-    fullRandom |= part2;
-
-    // Mask off the low 53bits
-    fullRandom &= (1LL << 53) - 1;
-    return static_cast<double>(fullRandom)/static_cast<double>(1LL << 53);
-#endif
-#endif
-}
-
-}