880dc47f37
Summary: Wrap __sync_* builtins with __libcpp_ functions to facility future customizations as atomic operations are unavailable on some targets. Reviewers: danalbert, EricWF, jroelofs Subscribers: joerg, llvm-commits Differential Revision: https://reviews.llvm.org/D34918 git-svn-id: https://llvm.org/svn/llvm-project/libcxx/trunk@307595 91177308-0d34-0410-b5e6-96231b3b80d8
30 lines
753 B
C++
30 lines
753 B
C++
// -*- C++ -*-
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//===----------------------------------------------------------------------===//
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//
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// The LLVM Compiler Infrastructure
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//
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// This file is dual licensed under the MIT and the University of Illinois Open
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// Source Licenses. See LICENSE.TXT for details.
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//
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//===----------------------------------------------------------------------===//
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#include <__atomic_support>
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namespace std {
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_LIBCPP_SAFE_STATIC static std::new_handler __new_handler;
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new_handler
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set_new_handler(new_handler handler) _NOEXCEPT
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{
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return __libcpp_sync_lock_test_and_set(&__new_handler, handler);
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}
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new_handler
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get_new_handler() _NOEXCEPT
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{
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return __libcpp_sync_fetch_and_add<new_handler>(&__new_handler, nullptr);
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}
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} // namespace std
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