llvm-project/libcxx/src/random_shuffle.cpp
Louis Dionne 9783f28cbb
[libc++] Format the code base (#74334)
This patch runs clang-format on all of libcxx/include and libcxx/src, in
accordance with the RFC discussed at [1]. Follow-up patches will format
the benchmarks, the test suite and remaining parts of the code. I'm
splitting this one into its own patch so the diff is a bit easier to
review.

This patch was generated with:

   find libcxx/include libcxx/src -type f \
      | grep -v 'module.modulemap.in' \
      | grep -v 'CMakeLists.txt' \
      | grep -v 'README.txt' \
      | grep -v 'libcxx.imp' \
      | grep -v '__config_site.in' \
      | xargs clang-format -i

A Git merge driver is available in libcxx/utils/clang-format-merge-driver.sh
to help resolve merge and rebase issues across these formatting changes.

[1]: https://discourse.llvm.org/t/rfc-clang-formatting-all-of-libc-once-and-for-all
2023-12-18 14:01:33 -05:00

52 lines
1.2 KiB
C++

//===----------------------------------------------------------------------===//
//
// 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