| Index: third_party/libc++/src/random.cpp
|
| ===================================================================
|
| --- third_party/libc++/src/random.cpp (revision 0)
|
| +++ third_party/libc++/src/random.cpp (revision 0)
|
| @@ -0,0 +1,74 @@
|
| +//===-------------------------- random.cpp --------------------------------===//
|
| +//
|
| +// The LLVM Compiler Infrastructure
|
| +//
|
| +// This file is dual licensed under the MIT and the University of Illinois Open
|
| +// Source Licenses. See LICENSE.TXT for details.
|
| +//
|
| +//===----------------------------------------------------------------------===//
|
| +
|
| +#if defined(_WIN32)
|
| +// Must be defined before including stdlib.h to enable rand_s().
|
| +#define _CRT_RAND_S
|
| +#include <stdio.h>
|
| +#endif
|
| +
|
| +#include "random"
|
| +#include "system_error"
|
| +
|
| +#ifdef __sun__
|
| +#define rename solaris_headers_are_broken
|
| +#endif
|
| +#include <fcntl.h>
|
| +#include <unistd.h>
|
| +#include <errno.h>
|
| +
|
| +_LIBCPP_BEGIN_NAMESPACE_STD
|
| +
|
| +#if defined(_WIN32)
|
| +random_device::random_device(const string&)
|
| +{
|
| +}
|
| +
|
| +random_device::~random_device()
|
| +{
|
| +}
|
| +
|
| +unsigned
|
| +random_device::operator()()
|
| +{
|
| + unsigned r;
|
| + errno_t err = rand_s(&r);
|
| + if (err)
|
| + __throw_system_error(err, "random_device rand_s failed.");
|
| + return r;
|
| +}
|
| +#else
|
| +random_device::random_device(const string& __token)
|
| + : __f_(open(__token.c_str(), O_RDONLY))
|
| +{
|
| + if (__f_ <= 0)
|
| + __throw_system_error(errno, ("random_device failed to open " + __token).c_str());
|
| +}
|
| +
|
| +random_device::~random_device()
|
| +{
|
| + close(__f_);
|
| +}
|
| +
|
| +unsigned
|
| +random_device::operator()()
|
| +{
|
| + unsigned r;
|
| + read(__f_, &r, sizeof(r));
|
| + return r;
|
| +}
|
| +#endif // defined(_WIN32)
|
| +
|
| +double
|
| +random_device::entropy() const _NOEXCEPT
|
| +{
|
| + return 0;
|
| +}
|
| +
|
| +_LIBCPP_END_NAMESPACE_STD
|
|
|
| Property changes on: third_party/libc++/src/random.cpp
|
| ___________________________________________________________________
|
| Added: svn:eol-style
|
| + LF
|
|
|
|
|