v8 0.84.0

Rust bindings to V8
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//===----------------------------------------------------------------------===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//

#include <algorithm>
#include <random>

#ifndef _LIBCPP_HAS_NO_THREADS
#  include <mutex>
#  if defined(__ELF__) && defined(_LIBCPP_LINK_PTHREAD_LIB)
#    pragma comment(lib, "pthread")
#  endif
#endif

_LIBCPP_BEGIN_NAMESPACE_STD

#ifndef _LIBCPP_HAS_NO_THREADS
static constinit __libcpp_mutex_t __rs_mut = _LIBCPP_MUTEX_INITIALIZER;
#endif
unsigned __rs_default::__c_ = 0;

__rs_default::__rs_default()
{
#ifndef _LIBCPP_HAS_NO_THREADS
    __libcpp_mutex_lock(&__rs_mut);
#endif
    __c_ = 1;
}

__rs_default::__rs_default(const __rs_default&)
{
    ++__c_;
}

__rs_default::~__rs_default()
{
#ifndef _LIBCPP_HAS_NO_THREADS
    if (--__c_ == 0)
       __libcpp_mutex_unlock(&__rs_mut);
#else
    --__c_;
#endif
}

__rs_default::result_type
__rs_default::operator()()
{
    static mt19937 __rs_g;
    return __rs_g();
}

__rs_default
__rs_get()
{
    return __rs_default();
}

_LIBCPP_END_NAMESPACE_STD