WIP: CPP async workers

nan_aligned_alloc_cpp17.hpp

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+// Boost Software License - Version 1.0 - August 17th, 2003
+
+// Permission is hereby granted, free of charge, to any person or organization
+// obtaining a copy of the software and accompanying documentation covered by
+// this license (the "Software") to use, reproduce, display, distribute,
+// execute, and transmit the Software, and to prepare derivative works of the
+// Software, and to permit third-parties to whom the Software is furnished to
+// do so, all subject to the following:
+
+// The copyright notices in the Software and this entire statement, including
+// the above license grant, this restriction and the following disclaimer,
+// must be included in all copies of the Software, in whole or in part, and
+// all derivative works of the Software, unless such copies or derivative
+// works are solely in the form of machine-executable object code generated by
+// a source language processor.
+
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+// FITNESS FOR A PARTICULAR PURPOSE, TITLE AND NON-INFRINGEMENT. IN NO EVENT
+// SHALL THE COPYRIGHT HOLDERS OR ANYONE DISTRIBUTING THE SOFTWARE BE LIABLE
+// FOR ANY DAMAGES OR OTHER LIABILITY, WHETHER IN CONTRACT, TORT OR OTHERWISE,
+// ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
+// DEALINGS IN THE SOFTWARE.
+
+//ORIGINAL HEADER
+/*
+Copyright 2014-2015 Glen Joseph Fernandes
+(glenjofe@gmail.com)
+
+Distributed under the Boost Software License, Version 1.0.
+(http://www.boost.org/LICENSE_1_0.txt)
+*/
+
+//MODIFIED FOR NAN
+
+
+#ifndef NAN_ALIGNED_ALLOC_HPP
+#define NAN_ALIGNED_ALLOC_HPP
+
+
+#if defined(ALIGNED_ALLOC_USE_ALLOCATE)
+#include "nan_aligned_alloc_generic_cpp17.hpp"
+#elif defined(_MSC_VER) && !defined(UNDER_CE)
+#include "nan_aligned_alloc_msvc_cpp17.hpp"
+#elif defined(__MINGW32__) && (__MSVCRT_VERSION__ >= 0x0700)
+#include "nan_aligned_alloc_msvc_cpp17.hpp"
+#elif MAC_OS_X_VERSION_MIN_REQUIRED >= 1090
+#include "nan_aligned_alloc_posix_cpp17.hpp"
+#elif MAC_OS_X_VERSION_MIN_REQUIRED >= 1060
+#include "nan_aligned_alloc_macos_cpp17.hpp"
+#elif defined(__SunOS_5_11) || defined(__SunOS_5_12)
+#include "nan_aligned_alloc_posix_cpp17.hpp"
+#elif (_POSIX_C_SOURCE >= 200112L) || (_XOPEN_SOURCE >= 600)
+#include "nan_aligned_alloc_posix_cpp17.hpp"
+#elif defined(__linux__) /* this *should* work */
+#include "nan_aligned_alloc_posix_cpp17.hpp"
+#else
+#pragma message "Falling back to generic aligned_alloc using allocator hack"
+#include "nan_aligned_alloc_generic_cpp17.hpp"
+#endif
+
+#endif

nan_aligned_alloc_generic_cpp17.hpp

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+// Boost Software License - Version 1.0 - August 17th, 2003
+
+// Permission is hereby granted, free of charge, to any person or organization
+// obtaining a copy of the software and accompanying documentation covered by
+// this license (the "Software") to use, reproduce, display, distribute,
+// execute, and transmit the Software, and to prepare derivative works of the
+// Software, and to permit third-parties to whom the Software is furnished to
+// do so, all subject to the following:
+
+// The copyright notices in the Software and this entire statement, including
+// the above license grant, this restriction and the following disclaimer,
+// must be included in all copies of the Software, in whole or in part, and
+// all derivative works of the Software, unless such copies or derivative
+// works are solely in the form of machine-executable object code generated by
+// a source language processor.
+
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+// FITNESS FOR A PARTICULAR PURPOSE, TITLE AND NON-INFRINGEMENT. IN NO EVENT
+// SHALL THE COPYRIGHT HOLDERS OR ANYONE DISTRIBUTING THE SOFTWARE BE LIABLE
+// FOR ANY DAMAGES OR OTHER LIABILITY, WHETHER IN CONTRACT, TORT OR OTHERWISE,
+// ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
+// DEALINGS IN THE SOFTWARE.
+
+//ORIGINAL HEADER
+/*
+Copyright 2014-2015 Glen Joseph Fernandes
+(glenjofe@gmail.com)
+
+Distributed under the Boost Software License, Version 1.0.
+(http://www.boost.org/LICENSE_1_0.txt)
+*/
+
+//ADAPTED FROM THE CODE WRITTEN BY djarek (Damian Jarek) POSTED ON https://cpplang.slack.com/
+//ON 06.03.2020
+
+//MODIFIED FOR NAN
+
+#ifndef NAN_ALIGNED_DETAIL_ALIGNED_ALLOC_GENERIC
+#define NAN_ALIGNED_DETAIL_ALIGNED_ALLOC_GENERIC
+
+#include "nan_aligned_alloc_is_alignment_cpp17.hpp"
+#include <cassert>
+#include <cstddef>
+#include <cstdlib>
+#include <memory>
+#include <cstring>
+
+namespace Nan::detail::align {
+
+inline void*
+aligned_alloc(std::size_t alignment, std::size_t size) noexcept
+{
+    assert(is_alignment(alignment));
+    constexpr size_t N = alignof(void*);
+
+    if (alignment < N) {
+        alignment = N;
+    }
+
+    std::size_t n = size + alignment - N;
+    void* p = std::malloc(sizeof(void*) + n);
+    if (p) {
+        void* p2 = static_cast<char*>(p) + sizeof(p);
+        auto * const ap = static_cast<char*>(std::align(alignment, size, p2, n));
+        std::memcpy(ap - sizeof(p), &p, sizeof(p));
+
+        p = ap;
+    }
+    return p;
+}
+
+inline void
+aligned_free(void* ptr) noexcept
+{
+    if(ptr) {
+        void* rp;
+        std::memcpy(&rp, static_cast<char*>(ptr) - sizeof(void*), sizeof(void*));
+        std::free(rp);
+    }
+}
+
+}
+
+#endif

nan_aligned_alloc_is_alignment_cpp17.hpp

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+// Boost Software License - Version 1.0 - August 17th, 2003
+
+// Permission is hereby granted, free of charge, to any person or organization
+// obtaining a copy of the software and accompanying documentation covered by
+// this license (the "Software") to use, reproduce, display, distribute,
+// execute, and transmit the Software, and to prepare derivative works of the
+// Software, and to permit third-parties to whom the Software is furnished to
+// do so, all subject to the following:
+
+// The copyright notices in the Software and this entire statement, including
+// the above license grant, this restriction and the following disclaimer,
+// must be included in all copies of the Software, in whole or in part, and
+// all derivative works of the Software, unless such copies or derivative
+// works are solely in the form of machine-executable object code generated by
+// a source language processor.
+
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+// FITNESS FOR A PARTICULAR PURPOSE, TITLE AND NON-INFRINGEMENT. IN NO EVENT
+// SHALL THE COPYRIGHT HOLDERS OR ANYONE DISTRIBUTING THE SOFTWARE BE LIABLE
+// FOR ANY DAMAGES OR OTHER LIABILITY, WHETHER IN CONTRACT, TORT OR OTHERWISE,
+// ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
+// DEALINGS IN THE SOFTWARE.
+
+//ORIGINAL HEADER
+/*
+Copyright 2014-2015 Glen Joseph Fernandes
+(glenjofe@gmail.com)
+
+Distributed under the Boost Software License, Version 1.0.
+(http://www.boost.org/LICENSE_1_0.txt)
+*/
+
+//MODIFIED FOR NAN
+
+
+#ifndef NAN_ALIGNED_ALLOC_DETAIL_IS_ALIGNMENT_HPP
+#define NAN_ALIGNED_ALLOC_DETAIL_IS_ALIGNMENT_HPP
+
+#include <cstddef>
+
+namespace Nan::detail::align {
+
+constexpr inline bool
+is_alignment(std::size_t value) noexcept
+{
+    return (value > 0) && ((value & (value - 1)) == 0);
+}
+
+}
+
+#endif

nan_aligned_alloc_macos_cpp17.hpp

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+// Boost Software License - Version 1.0 - August 17th, 2003
+
+// Permission is hereby granted, free of charge, to any person or organization
+// obtaining a copy of the software and accompanying documentation covered by
+// this license (the "Software") to use, reproduce, display, distribute,
+// execute, and transmit the Software, and to prepare derivative works of the
+// Software, and to permit third-parties to whom the Software is furnished to
+// do so, all subject to the following:
+
+// The copyright notices in the Software and this entire statement, including
+// the above license grant, this restriction and the following disclaimer,
+// must be included in all copies of the Software, in whole or in part, and
+// all derivative works of the Software, unless such copies or derivative
+// works are solely in the form of machine-executable object code generated by
+// a source language processor.
+
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+// FITNESS FOR A PARTICULAR PURPOSE, TITLE AND NON-INFRINGEMENT. IN NO EVENT
+// SHALL THE COPYRIGHT HOLDERS OR ANYONE DISTRIBUTING THE SOFTWARE BE LIABLE
+// FOR ANY DAMAGES OR OTHER LIABILITY, WHETHER IN CONTRACT, TORT OR OTHERWISE,
+// ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
+// DEALINGS IN THE SOFTWARE.
+
+//ORIGINAL HEADER
+/*
+Copyright 2014-2015 Glen Joseph Fernandes
+(glenjofe@gmail.com)
+
+Distributed under the Boost Software License, Version 1.0.
+(http://www.boost.org/LICENSE_1_0.txt)
+*/
+
+//MODIFIED FOR NAN
+
+
+#ifndef NAN_ALIGNED_ALLOC_DETAIL_ALIGNED_ALLOC_MACOS_HPP
+#define NAN_ALIGNED_ALLOC_DETAIL_ALIGNED_ALLOC_MACOS_HPP
+
+#include "nan_aligned_alloc_is_alignment_cpp17.hpp"
+#include <cassert>
+#include <stdlib.h>
+#include <cstddef>
+
+namespace Nan::detail::align {
+
+inline void*
+aligned_alloc(std::size_t alignment, std::size_t size) noexcept
+{
+    assert(is_alignment(alignment));
+
+    if (size == 0) {
+        return nullptr;
+    }
+    if (alignment < sizeof(void*)) {
+        alignment = sizeof(void*);
+    }
+    void* p;
+    if (::posix_memalign(&p, alignment, size) != 0) {
+        p = nullptr;
+    }
+    return p;
+}
+
+inline void
+aligned_free(void* ptr) noexcept
+{
+    ::free(ptr);
+}
+
+}
+
+#endif

nan_aligned_alloc_msvc_cpp17.hpp

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+// Boost Software License - Version 1.0 - August 17th, 2003
+
+// Permission is hereby granted, free of charge, to any person or organization
+// obtaining a copy of the software and accompanying documentation covered by
+// this license (the "Software") to use, reproduce, display, distribute,
+// execute, and transmit the Software, and to prepare derivative works of the
+// Software, and to permit third-parties to whom the Software is furnished to
+// do so, all subject to the following:
+
+// The copyright notices in the Software and this entire statement, including
+// the above license grant, this restriction and the following disclaimer,
+// must be included in all copies of the Software, in whole or in part, and
+// all derivative works of the Software, unless such copies or derivative
+// works are solely in the form of machine-executable object code generated by
+// a source language processor.
+
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+// FITNESS FOR A PARTICULAR PURPOSE, TITLE AND NON-INFRINGEMENT. IN NO EVENT
+// SHALL THE COPYRIGHT HOLDERS OR ANYONE DISTRIBUTING THE SOFTWARE BE LIABLE
+// FOR ANY DAMAGES OR OTHER LIABILITY, WHETHER IN CONTRACT, TORT OR OTHERWISE,
+// ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
+// DEALINGS IN THE SOFTWARE.
+
+//ORIGINAL HEADER
+/*
+Copyright 2014-2015 Glen Joseph Fernandes
+(glenjofe@gmail.com)
+
+Distributed under the Boost Software License, Version 1.0.
+(http://www.boost.org/LICENSE_1_0.txt)
+*/
+
+//MODIFIED FOR NAN
+
+
+#ifndef NAN_ALIGNED_ALLOC_DETAIL_MSVC_HPP
+#define NAN_ALIGNED_ALLOC_DETAIL_MSVC_HPP
+
+#include "nan_aligned_alloc_is_alignment_cpp17.hpp"
+#include <cassert>
+#include <malloc.h>
+#include <cstddef>
+
+namespace Nan::detail::align {
+
+inline void*
+aligned_alloc(std::size_t alignment, std::size_t size) noexcept
+{
+    assert(is_alignment(alignment));
+
+    return ::_aligned_malloc(size, alignment);
+}
+
+inline void
+aligned_free(void* ptr) noexcept
+{
+    ::_aligned_free(ptr);
+}
+
+}
+
+#endif