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Fix for case where no aligned_alloc #559

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merged 1 commit into from
Dec 3, 2024
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Fix for case where no aligned_alloc #559

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19 changes: 15 additions & 4 deletions src/madness/world/worldgop.h
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Original file line number Diff line number Diff line change
Expand Up @@ -967,11 +967,22 @@ namespace madness {
};
using sptr_t = std::unique_ptr<std::byte[], free_dtor>;

auto buf0 = sptr_t(static_cast<std::byte *>(
std::aligned_alloc(sizeof(void *), bufsz)),
auto aligned_buf_alloc = [&]() -> std::byte* {
#ifdef HAVE_POSIX_MEMALIGN
void *ptr;
if (posix_memalign(&ptr, sizeof(void *), bufsz) != 0) {
throw std::bad_alloc();
}
return static_cast<std::byte *>(ptr);
#else
return static_cast<std::byte *>(
std::aligned_alloc(sizeof(void *), bufsz));
#endif
};

auto buf0 = sptr_t(aligned_buf_alloc(),
free_dtor{});
auto buf1 = sptr_t(static_cast<std::byte *>(
std::aligned_alloc(sizeof(void *), bufsz)),
auto buf1 = sptr_t(aligned_buf_alloc(),
free_dtor{});

// transfer data in chunks at most this large
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