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5d4439cc3e
release/17.x branch, commit 8f4dd44097c9ae25dd203d5ac87f3b48f854bba8 This adds the flag `-D_LIBCPP_PSTL_CPU_BACKEND_SERIAL`. A future enhancement could possibly pass something different if there is a compelling parallel implementation. That libdispatch one might be worth looking into.
39 lines
1.1 KiB
C++
Vendored
39 lines
1.1 KiB
C++
Vendored
// -*- C++ -*-
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//===----------------------------------------------------------------------===//
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//
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// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
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// See https://llvm.org/LICENSE.txt for license information.
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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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//
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//===----------------------------------------------------------------------===//
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#ifndef _PSTL_PARALLEL_BACKEND_H
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#define _PSTL_PARALLEL_BACKEND_H
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#include <__config>
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#if defined(_PSTL_PAR_BACKEND_SERIAL)
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# include "parallel_backend_serial.h"
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# if !defined(_LIBCPP_HAS_NO_INCOMPLETE_PSTL) && _LIBCPP_STD_VER >= 17
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namespace __pstl
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{
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namespace __par_backend = __serial_backend;
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} // namespace __pstl
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# endif // !defined(_LIBCPP_HAS_NO_INCOMPLETE_PSTL) && _LIBCPP_STD_VER >= 17
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#elif defined(_PSTL_PAR_BACKEND_TBB)
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# include "parallel_backend_tbb.h"
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namespace __pstl
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{
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namespace __par_backend = __tbb_backend;
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}
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#elif defined(_PSTL_PAR_BACKEND_OPENMP)
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# include "parallel_backend_omp.h"
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namespace __pstl
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{
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namespace __par_backend = __omp_backend;
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}
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#else
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# error "No backend set"
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#endif
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#endif /* _PSTL_PARALLEL_BACKEND_H */
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