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bug #1572: use c++11 atomic instead of volatile if c++11 is available, and disable multi-threaded GEMM on non-x86 without c++11.

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This commit is contained in:
Gael Guennebaud
2018-07-17 00:11:20 +02:00
parent add5757488
commit 40797dbea3
5 changed files with 34 additions and 7 deletions
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12
Eigen/src/Core/util/Macros.h
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@@ -537,7 +537,7 @@
#endif
#endif
// Does the compiler support type_trais?
// Does the compiler support type_traits?
#ifndef EIGEN_HAS_TYPE_TRAITS
#if EIGEN_MAX_CPP_VER>=11 && (EIGEN_HAS_CXX11 || EIGEN_COMP_MSVC >= 1700)
#define EIGEN_HAS_TYPE_TRAITS 1
@@ -617,6 +617,16 @@
#endif
#endif
#ifndef EIGEN_HAS_CXX11_ATOMIC
#if EIGEN_MAX_CPP_VER>=11 && \
(__has_feature(cxx_atomic) \
|| (__cplusplus > 201103L) \
|| ((__cplusplus >= 201103L) && (EIGEN_COMP_MSVC==0 || EIGEN_COMP_MSVC >= 1700)))
#define EIGEN_HAS_CXX11_ATOMIC 1
#else
#define EIGEN_HAS_CXX11_ATOMIC 0
#endif
#endif
#if defined(EIGEN_CUDACC) && EIGEN_HAS_CONSTEXPR
// While available already with c++11, this is useful mostly starting with c++14 and relaxed constexpr rules