//===----------------------- random_shuffle.cpp ---------------------------===// // // 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 _LIBCPP_SAFE_STATIC static __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 |