1c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath// This file is part of Eigen, a lightweight C++ template library 2c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath// for linear algebra. 3c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath// 4c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath// Copyright (C) 2008-2010 Gael Guennebaud <gael.guennebaud@inria.fr> 5c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath// Copyright (C) 2008-2009 Benoit Jacob <jacob.benoit.1@gmail.com> 6c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath// Copyright (C) 2009 Kenneth Riddile <kfriddile@yahoo.com> 7c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath// Copyright (C) 2010 Hauke Heibel <hauke.heibel@gmail.com> 8c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath// Copyright (C) 2010 Thomas Capricelli <orzel@freehackers.org> 9c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath// 10c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath// This Source Code Form is subject to the terms of the Mozilla 11c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath// Public License v. 2.0. If a copy of the MPL was not distributed 12c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath// with this file, You can obtain one at http://mozilla.org/MPL/2.0/. 13c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath 14c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath 15c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath/***************************************************************************** 16c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath*** Platform checks for aligned malloc functions *** 17c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath*****************************************************************************/ 18c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath 19c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath#ifndef EIGEN_MEMORY_H 20c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath#define EIGEN_MEMORY_H 21c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath 22c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath// On 64-bit systems, glibc's malloc returns 16-byte-aligned pointers, see: 23c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath// http://www.gnu.org/s/libc/manual/html_node/Aligned-Memory-Blocks.html 24c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath// This is true at least since glibc 2.8. 25c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath// This leaves the question how to detect 64-bit. According to this document, 26c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath// http://gcc.fyxm.net/summit/2003/Porting%20to%2064%20bit.pdf 27c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath// page 114, "[The] LP64 model [...] is used by all 64-bit UNIX ports" so it's indeed 28c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath// quite safe, at least within the context of glibc, to equate 64-bit with LP64. 29c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath#if defined(__GLIBC__) && ((__GLIBC__>=2 && __GLIBC_MINOR__ >= 8) || __GLIBC__>2) \ 30c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath && defined(__LP64__) 31c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath #define EIGEN_GLIBC_MALLOC_ALREADY_ALIGNED 1 32c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath#else 33c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath #define EIGEN_GLIBC_MALLOC_ALREADY_ALIGNED 0 34c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath#endif 35c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath 36c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath// FreeBSD 6 seems to have 16-byte aligned malloc 37c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath// See http://svn.freebsd.org/viewvc/base/stable/6/lib/libc/stdlib/malloc.c?view=markup 38c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath// FreeBSD 7 seems to have 16-byte aligned malloc except on ARM and MIPS architectures 39c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath// See http://svn.freebsd.org/viewvc/base/stable/7/lib/libc/stdlib/malloc.c?view=markup 40c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath#if defined(__FreeBSD__) && !defined(__arm__) && !defined(__mips__) 41c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath #define EIGEN_FREEBSD_MALLOC_ALREADY_ALIGNED 1 42c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath#else 43c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath #define EIGEN_FREEBSD_MALLOC_ALREADY_ALIGNED 0 44c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath#endif 45c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath 46c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath#if defined(__APPLE__) \ 47c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath || defined(_WIN64) \ 48c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath || EIGEN_GLIBC_MALLOC_ALREADY_ALIGNED \ 49c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath || EIGEN_FREEBSD_MALLOC_ALREADY_ALIGNED 50c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath #define EIGEN_MALLOC_ALREADY_ALIGNED 1 51c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath#else 52c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath #define EIGEN_MALLOC_ALREADY_ALIGNED 0 53c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath#endif 54c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath 55c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath#if ((defined __QNXNTO__) || (defined _GNU_SOURCE) || ((defined _XOPEN_SOURCE) && (_XOPEN_SOURCE >= 600))) \ 56c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath && (defined _POSIX_ADVISORY_INFO) && (_POSIX_ADVISORY_INFO > 0) 57c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath #define EIGEN_HAS_POSIX_MEMALIGN 1 58c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath#else 59c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath #define EIGEN_HAS_POSIX_MEMALIGN 0 60c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath#endif 61c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath 62c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath#ifdef EIGEN_VECTORIZE_SSE 63c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath #define EIGEN_HAS_MM_MALLOC 1 64c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath#else 65c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath #define EIGEN_HAS_MM_MALLOC 0 66c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath#endif 67c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath 68c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamathnamespace Eigen { 69c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath 70c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamathnamespace internal { 71c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath 72c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamathinline void throw_std_bad_alloc() 73c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath{ 74c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath #ifdef EIGEN_EXCEPTIONS 75c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath throw std::bad_alloc(); 76c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath #else 77c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath std::size_t huge = -1; 78c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath new int[huge]; 79c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath #endif 80c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath} 81c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath 82c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath/***************************************************************************** 83c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath*** Implementation of handmade aligned functions *** 84c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath*****************************************************************************/ 85c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath 86c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath/* ----- Hand made implementations of aligned malloc/free and realloc ----- */ 87c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath 88c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath/** \internal Like malloc, but the returned pointer is guaranteed to be 16-byte aligned. 89c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath * Fast, but wastes 16 additional bytes of memory. Does not throw any exception. 90c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath */ 91c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamathinline void* handmade_aligned_malloc(size_t size) 92c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath{ 93c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath void *original = std::malloc(size+16); 94c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath if (original == 0) return 0; 95c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath void *aligned = reinterpret_cast<void*>((reinterpret_cast<size_t>(original) & ~(size_t(15))) + 16); 96c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath *(reinterpret_cast<void**>(aligned) - 1) = original; 97c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath return aligned; 98c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath} 99c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath 100c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath/** \internal Frees memory allocated with handmade_aligned_malloc */ 101c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamathinline void handmade_aligned_free(void *ptr) 102c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath{ 103c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath if (ptr) std::free(*(reinterpret_cast<void**>(ptr) - 1)); 104c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath} 105c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath 106c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath/** \internal 107c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath * \brief Reallocates aligned memory. 108c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath * Since we know that our handmade version is based on std::realloc 109c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath * we can use std::realloc to implement efficient reallocation. 110c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath */ 111c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamathinline void* handmade_aligned_realloc(void* ptr, size_t size, size_t = 0) 112c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath{ 113c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath if (ptr == 0) return handmade_aligned_malloc(size); 114c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath void *original = *(reinterpret_cast<void**>(ptr) - 1); 115c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath original = std::realloc(original,size+16); 116c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath if (original == 0) return 0; 117c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath void *aligned = reinterpret_cast<void*>((reinterpret_cast<size_t>(original) & ~(size_t(15))) + 16); 118c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath *(reinterpret_cast<void**>(aligned) - 1) = original; 119c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath return aligned; 120c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath} 121c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath 122c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath/***************************************************************************** 123c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath*** Implementation of generic aligned realloc (when no realloc can be used)*** 124c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath*****************************************************************************/ 125c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath 126c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamathvoid* aligned_malloc(size_t size); 127c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamathvoid aligned_free(void *ptr); 128c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath 129c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath/** \internal 130c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath * \brief Reallocates aligned memory. 131c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath * Allows reallocation with aligned ptr types. This implementation will 132c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath * always create a new memory chunk and copy the old data. 133c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath */ 134c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamathinline void* generic_aligned_realloc(void* ptr, size_t size, size_t old_size) 135c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath{ 136c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath if (ptr==0) 137c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath return aligned_malloc(size); 138c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath 139c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath if (size==0) 140c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath { 141c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath aligned_free(ptr); 142c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath return 0; 143c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath } 144c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath 145c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath void* newptr = aligned_malloc(size); 146c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath if (newptr == 0) 147c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath { 148c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath #ifdef EIGEN_HAS_ERRNO 149c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath errno = ENOMEM; // according to the standard 150c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath #endif 151c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath return 0; 152c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath } 153c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath 154c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath if (ptr != 0) 155c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath { 156c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath std::memcpy(newptr, ptr, (std::min)(size,old_size)); 157c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath aligned_free(ptr); 158c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath } 159c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath 160c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath return newptr; 161c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath} 162c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath 163c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath/***************************************************************************** 164c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath*** Implementation of portable aligned versions of malloc/free/realloc *** 165c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath*****************************************************************************/ 166c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath 167c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath#ifdef EIGEN_NO_MALLOC 168c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamathinline void check_that_malloc_is_allowed() 169c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath{ 170c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath eigen_assert(false && "heap allocation is forbidden (EIGEN_NO_MALLOC is defined)"); 171c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath} 172c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath#elif defined EIGEN_RUNTIME_NO_MALLOC 173c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamathinline bool is_malloc_allowed_impl(bool update, bool new_value = false) 174c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath{ 175c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath static bool value = true; 176c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath if (update == 1) 177c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath value = new_value; 178c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath return value; 179c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath} 180c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamathinline bool is_malloc_allowed() { return is_malloc_allowed_impl(false); } 181c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamathinline bool set_is_malloc_allowed(bool new_value) { return is_malloc_allowed_impl(true, new_value); } 182c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamathinline void check_that_malloc_is_allowed() 183c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath{ 184c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath eigen_assert(is_malloc_allowed() && "heap allocation is forbidden (EIGEN_RUNTIME_NO_MALLOC is defined and g_is_malloc_allowed is false)"); 185c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath} 186c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath#else 187c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamathinline void check_that_malloc_is_allowed() 188c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath{} 189c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath#endif 190c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath 191c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath/** \internal Allocates \a size bytes. The returned pointer is guaranteed to have 16 bytes alignment. 192c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath * On allocation error, the returned pointer is null, and std::bad_alloc is thrown. 193c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath */ 194c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamathinline void* aligned_malloc(size_t size) 195c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath{ 196c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath check_that_malloc_is_allowed(); 197c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath 198c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath void *result; 199c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath #if !EIGEN_ALIGN 200c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath result = std::malloc(size); 201c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath #elif EIGEN_MALLOC_ALREADY_ALIGNED 202c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath result = std::malloc(size); 203c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath #elif EIGEN_HAS_POSIX_MEMALIGN 204c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath if(posix_memalign(&result, 16, size)) result = 0; 205c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath #elif EIGEN_HAS_MM_MALLOC 206c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath result = _mm_malloc(size, 16); 207c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath #elif (defined _MSC_VER) 208c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath result = _aligned_malloc(size, 16); 209c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath #else 210c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath result = handmade_aligned_malloc(size); 211c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath #endif 212c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath 213c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath if(!result && size) 214c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath throw_std_bad_alloc(); 215c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath 216c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath return result; 217c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath} 218c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath 219c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath/** \internal Frees memory allocated with aligned_malloc. */ 220c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamathinline void aligned_free(void *ptr) 221c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath{ 222c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath #if !EIGEN_ALIGN 223c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath std::free(ptr); 224c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath #elif EIGEN_MALLOC_ALREADY_ALIGNED 225c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath std::free(ptr); 226c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath #elif EIGEN_HAS_POSIX_MEMALIGN 227c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath std::free(ptr); 228c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath #elif EIGEN_HAS_MM_MALLOC 229c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath _mm_free(ptr); 230c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath #elif defined(_MSC_VER) 231c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath _aligned_free(ptr); 232c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath #else 233c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath handmade_aligned_free(ptr); 234c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath #endif 235c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath} 236c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath 237c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath/** 238c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath* \internal 239c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath* \brief Reallocates an aligned block of memory. 240c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath* \throws std::bad_alloc on allocation failure 241c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath**/ 242c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamathinline void* aligned_realloc(void *ptr, size_t new_size, size_t old_size) 243c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath{ 244c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath EIGEN_UNUSED_VARIABLE(old_size); 245c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath 246c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath void *result; 247c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath#if !EIGEN_ALIGN 248c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath result = std::realloc(ptr,new_size); 249c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath#elif EIGEN_MALLOC_ALREADY_ALIGNED 250c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath result = std::realloc(ptr,new_size); 251c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath#elif EIGEN_HAS_POSIX_MEMALIGN 252c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath result = generic_aligned_realloc(ptr,new_size,old_size); 253c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath#elif EIGEN_HAS_MM_MALLOC 254c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath // The defined(_mm_free) is just here to verify that this MSVC version 255c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath // implements _mm_malloc/_mm_free based on the corresponding _aligned_ 256c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath // functions. This may not always be the case and we just try to be safe. 257c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath #if defined(_MSC_VER) && defined(_mm_free) 258c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath result = _aligned_realloc(ptr,new_size,16); 259c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath #else 260c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath result = generic_aligned_realloc(ptr,new_size,old_size); 261c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath #endif 262c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath#elif defined(_MSC_VER) 263c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath result = _aligned_realloc(ptr,new_size,16); 264c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath#else 265c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath result = handmade_aligned_realloc(ptr,new_size,old_size); 266c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath#endif 267c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath 268c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath if (!result && new_size) 269c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath throw_std_bad_alloc(); 270c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath 271c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath return result; 272c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath} 273c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath 274c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath/***************************************************************************** 275c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath*** Implementation of conditionally aligned functions *** 276c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath*****************************************************************************/ 277c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath 278c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath/** \internal Allocates \a size bytes. If Align is true, then the returned ptr is 16-byte-aligned. 279c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath * On allocation error, the returned pointer is null, and a std::bad_alloc is thrown. 280c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath */ 281c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamathtemplate<bool Align> inline void* conditional_aligned_malloc(size_t size) 282c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath{ 283c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath return aligned_malloc(size); 284c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath} 285c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath 286c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamathtemplate<> inline void* conditional_aligned_malloc<false>(size_t size) 287c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath{ 288c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath check_that_malloc_is_allowed(); 289c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath 290c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath void *result = std::malloc(size); 291c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath if(!result && size) 292c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath throw_std_bad_alloc(); 293c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath return result; 294c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath} 295c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath 296c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath/** \internal Frees memory allocated with conditional_aligned_malloc */ 297c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamathtemplate<bool Align> inline void conditional_aligned_free(void *ptr) 298c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath{ 299c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath aligned_free(ptr); 300c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath} 301c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath 302c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamathtemplate<> inline void conditional_aligned_free<false>(void *ptr) 303c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath{ 304c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath std::free(ptr); 305c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath} 306c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath 307c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamathtemplate<bool Align> inline void* conditional_aligned_realloc(void* ptr, size_t new_size, size_t old_size) 308c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath{ 309c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath return aligned_realloc(ptr, new_size, old_size); 310c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath} 311c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath 312c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamathtemplate<> inline void* conditional_aligned_realloc<false>(void* ptr, size_t new_size, size_t) 313c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath{ 314c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath return std::realloc(ptr, new_size); 315c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath} 316c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath 317c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath/***************************************************************************** 318c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath*** Construction/destruction of array elements *** 319c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath*****************************************************************************/ 320c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath 321c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath/** \internal Constructs the elements of an array. 322c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath * The \a size parameter tells on how many objects to call the constructor of T. 323c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath */ 324c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamathtemplate<typename T> inline T* construct_elements_of_array(T *ptr, size_t size) 325c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath{ 326c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath for (size_t i=0; i < size; ++i) ::new (ptr + i) T; 327c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath return ptr; 328c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath} 329c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath 330c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath/** \internal Destructs the elements of an array. 331c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath * The \a size parameters tells on how many objects to call the destructor of T. 332c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath */ 333c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamathtemplate<typename T> inline void destruct_elements_of_array(T *ptr, size_t size) 334c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath{ 335c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath // always destruct an array starting from the end. 336c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath if(ptr) 337c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath while(size) ptr[--size].~T(); 338c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath} 339c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath 340c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath/***************************************************************************** 341c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath*** Implementation of aligned new/delete-like functions *** 342c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath*****************************************************************************/ 343c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath 344c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamathtemplate<typename T> 345c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan KamathEIGEN_ALWAYS_INLINE void check_size_for_overflow(size_t size) 346c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath{ 347c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath if(size > size_t(-1) / sizeof(T)) 348c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath throw_std_bad_alloc(); 349c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath} 350c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath 351c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath/** \internal Allocates \a size objects of type T. The returned pointer is guaranteed to have 16 bytes alignment. 352c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath * On allocation error, the returned pointer is undefined, but a std::bad_alloc is thrown. 353c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath * The default constructor of T is called. 354c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath */ 355c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamathtemplate<typename T> inline T* aligned_new(size_t size) 356c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath{ 357c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath check_size_for_overflow<T>(size); 358c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath T *result = reinterpret_cast<T*>(aligned_malloc(sizeof(T)*size)); 359c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath return construct_elements_of_array(result, size); 360c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath} 361c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath 362c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamathtemplate<typename T, bool Align> inline T* conditional_aligned_new(size_t size) 363c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath{ 364c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath check_size_for_overflow<T>(size); 365c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath T *result = reinterpret_cast<T*>(conditional_aligned_malloc<Align>(sizeof(T)*size)); 366c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath return construct_elements_of_array(result, size); 367c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath} 368c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath 369c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath/** \internal Deletes objects constructed with aligned_new 370c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath * The \a size parameters tells on how many objects to call the destructor of T. 371c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath */ 372c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamathtemplate<typename T> inline void aligned_delete(T *ptr, size_t size) 373c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath{ 374c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath destruct_elements_of_array<T>(ptr, size); 375c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath aligned_free(ptr); 376c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath} 377c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath 378c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath/** \internal Deletes objects constructed with conditional_aligned_new 379c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath * The \a size parameters tells on how many objects to call the destructor of T. 380c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath */ 381c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamathtemplate<typename T, bool Align> inline void conditional_aligned_delete(T *ptr, size_t size) 382c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath{ 383c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath destruct_elements_of_array<T>(ptr, size); 384c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath conditional_aligned_free<Align>(ptr); 385c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath} 386c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath 387c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamathtemplate<typename T, bool Align> inline T* conditional_aligned_realloc_new(T* pts, size_t new_size, size_t old_size) 388c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath{ 389c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath check_size_for_overflow<T>(new_size); 390c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath check_size_for_overflow<T>(old_size); 391c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath if(new_size < old_size) 392c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath destruct_elements_of_array(pts+new_size, old_size-new_size); 393c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath T *result = reinterpret_cast<T*>(conditional_aligned_realloc<Align>(reinterpret_cast<void*>(pts), sizeof(T)*new_size, sizeof(T)*old_size)); 394c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath if(new_size > old_size) 395c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath construct_elements_of_array(result+old_size, new_size-old_size); 396c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath return result; 397c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath} 398c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath 399c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath 400c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamathtemplate<typename T, bool Align> inline T* conditional_aligned_new_auto(size_t size) 401c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath{ 402c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath check_size_for_overflow<T>(size); 403c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath T *result = reinterpret_cast<T*>(conditional_aligned_malloc<Align>(sizeof(T)*size)); 404c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath if(NumTraits<T>::RequireInitialization) 405c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath construct_elements_of_array(result, size); 406c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath return result; 407c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath} 408c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath 409c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamathtemplate<typename T, bool Align> inline T* conditional_aligned_realloc_new_auto(T* pts, size_t new_size, size_t old_size) 410c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath{ 411c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath check_size_for_overflow<T>(new_size); 412c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath check_size_for_overflow<T>(old_size); 413c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath if(NumTraits<T>::RequireInitialization && (new_size < old_size)) 414c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath destruct_elements_of_array(pts+new_size, old_size-new_size); 415c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath T *result = reinterpret_cast<T*>(conditional_aligned_realloc<Align>(reinterpret_cast<void*>(pts), sizeof(T)*new_size, sizeof(T)*old_size)); 416c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath if(NumTraits<T>::RequireInitialization && (new_size > old_size)) 417c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath construct_elements_of_array(result+old_size, new_size-old_size); 418c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath return result; 419c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath} 420c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath 421c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamathtemplate<typename T, bool Align> inline void conditional_aligned_delete_auto(T *ptr, size_t size) 422c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath{ 423c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath if(NumTraits<T>::RequireInitialization) 424c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath destruct_elements_of_array<T>(ptr, size); 425c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath conditional_aligned_free<Align>(ptr); 426c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath} 427c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath 428c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath/****************************************************************************/ 429c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath 430c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath/** \internal Returns the index of the first element of the array that is well aligned for vectorization. 431c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath * 432c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath * \param array the address of the start of the array 433c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath * \param size the size of the array 434c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath * 435c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath * \note If no element of the array is well aligned, the size of the array is returned. Typically, 436c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath * for example with SSE, "well aligned" means 16-byte-aligned. If vectorization is disabled or if the 437c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath * packet size for the given scalar type is 1, then everything is considered well-aligned. 438c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath * 439c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath * \note If the scalar type is vectorizable, we rely on the following assumptions: sizeof(Scalar) is a 440c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath * power of 2, the packet size in bytes is also a power of 2, and is a multiple of sizeof(Scalar). On the 441c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath * other hand, we do not assume that the array address is a multiple of sizeof(Scalar), as that fails for 442c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath * example with Scalar=double on certain 32-bit platforms, see bug #79. 443c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath * 444c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath * There is also the variant first_aligned(const MatrixBase&) defined in DenseCoeffsBase.h. 445c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath */ 446c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamathtemplate<typename Scalar, typename Index> 447c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamathstatic inline Index first_aligned(const Scalar* array, Index size) 448c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath{ 449c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath typedef typename packet_traits<Scalar>::type Packet; 450c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath enum { PacketSize = packet_traits<Scalar>::size, 451c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath PacketAlignedMask = PacketSize-1 452c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath }; 453c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath 454c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath if(PacketSize==1) 455c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath { 456c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath // Either there is no vectorization, or a packet consists of exactly 1 scalar so that all elements 457c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath // of the array have the same alignment. 458c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath return 0; 459c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath } 460c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath else if(size_t(array) & (sizeof(Scalar)-1)) 461c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath { 462c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath // There is vectorization for this scalar type, but the array is not aligned to the size of a single scalar. 463c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath // Consequently, no element of the array is well aligned. 464c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath return size; 465c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath } 466c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath else 467c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath { 468c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath return std::min<Index>( (PacketSize - (Index((size_t(array)/sizeof(Scalar))) & PacketAlignedMask)) 469c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath & PacketAlignedMask, size); 470c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath } 471c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath} 472c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath 473c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath 474c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath// std::copy is much slower than memcpy, so let's introduce a smart_copy which 475c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath// use memcpy on trivial types, i.e., on types that does not require an initialization ctor. 476c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamathtemplate<typename T, bool UseMemcpy> struct smart_copy_helper; 477c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath 478c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamathtemplate<typename T> void smart_copy(const T* start, const T* end, T* target) 479c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath{ 480c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath smart_copy_helper<T,!NumTraits<T>::RequireInitialization>::run(start, end, target); 481c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath} 482c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath 483c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamathtemplate<typename T> struct smart_copy_helper<T,true> { 484c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath static inline void run(const T* start, const T* end, T* target) 485c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath { memcpy(target, start, std::ptrdiff_t(end)-std::ptrdiff_t(start)); } 486c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath}; 487c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath 488c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamathtemplate<typename T> struct smart_copy_helper<T,false> { 489c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath static inline void run(const T* start, const T* end, T* target) 490c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath { std::copy(start, end, target); } 491c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath}; 492c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath 493c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath 494c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath/***************************************************************************** 495c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath*** Implementation of runtime stack allocation (falling back to malloc) *** 496c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath*****************************************************************************/ 497c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath 498c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath// you can overwrite Eigen's default behavior regarding alloca by defining EIGEN_ALLOCA 499c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath// to the appropriate stack allocation function 500c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath#ifndef EIGEN_ALLOCA 501c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath #if (defined __linux__) 502c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath #define EIGEN_ALLOCA alloca 503c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath #elif defined(_MSC_VER) 504c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath #define EIGEN_ALLOCA _alloca 505c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath #endif 506c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath#endif 507c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath 508c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath// This helper class construct the allocated memory, and takes care of destructing and freeing the handled data 509c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath// at destruction time. In practice this helper class is mainly useful to avoid memory leak in case of exceptions. 510c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamathtemplate<typename T> class aligned_stack_memory_handler 511c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath{ 512c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath public: 513c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath /* Creates a stack_memory_handler responsible for the buffer \a ptr of size \a size. 514c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath * Note that \a ptr can be 0 regardless of the other parameters. 515c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath * This constructor takes care of constructing/initializing the elements of the buffer if required by the scalar type T (see NumTraits<T>::RequireInitialization). 516c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath * In this case, the buffer elements will also be destructed when this handler will be destructed. 517c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath * Finally, if \a dealloc is true, then the pointer \a ptr is freed. 518c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath **/ 519c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath aligned_stack_memory_handler(T* ptr, size_t size, bool dealloc) 520c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath : m_ptr(ptr), m_size(size), m_deallocate(dealloc) 521c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath { 522c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath if(NumTraits<T>::RequireInitialization && m_ptr) 523c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath Eigen::internal::construct_elements_of_array(m_ptr, size); 524c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath } 525c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath ~aligned_stack_memory_handler() 526c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath { 527c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath if(NumTraits<T>::RequireInitialization && m_ptr) 528c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath Eigen::internal::destruct_elements_of_array<T>(m_ptr, m_size); 529c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath if(m_deallocate) 530c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath Eigen::internal::aligned_free(m_ptr); 531c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath } 532c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath protected: 533c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath T* m_ptr; 534c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath size_t m_size; 535c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath bool m_deallocate; 536c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath}; 537c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath 538c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath} // end namespace internal 539c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath 540c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath/** \internal 541c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath * Declares, allocates and construct an aligned buffer named NAME of SIZE elements of type TYPE on the stack 542c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath * if SIZE is smaller than EIGEN_STACK_ALLOCATION_LIMIT, and if stack allocation is supported by the platform 543c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath * (currently, this is Linux and Visual Studio only). Otherwise the memory is allocated on the heap. 544c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath * The allocated buffer is automatically deleted when exiting the scope of this declaration. 545c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath * If BUFFER is non null, then the declared variable is simply an alias for BUFFER, and no allocation/deletion occurs. 546c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath * Here is an example: 547c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath * \code 548c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath * { 549c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath * ei_declare_aligned_stack_constructed_variable(float,data,size,0); 550c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath * // use data[0] to data[size-1] 551c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath * } 552c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath * \endcode 553c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath * The underlying stack allocation function can controlled with the EIGEN_ALLOCA preprocessor token. 554c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath */ 555c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath#ifdef EIGEN_ALLOCA 556c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath 557c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath #ifdef __arm__ 558c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath #define EIGEN_ALIGNED_ALLOCA(SIZE) reinterpret_cast<void*>((reinterpret_cast<size_t>(EIGEN_ALLOCA(SIZE+16)) & ~(size_t(15))) + 16) 559c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath #else 560c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath #define EIGEN_ALIGNED_ALLOCA EIGEN_ALLOCA 561c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath #endif 562c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath 563c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath #define ei_declare_aligned_stack_constructed_variable(TYPE,NAME,SIZE,BUFFER) \ 564c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath Eigen::internal::check_size_for_overflow<TYPE>(SIZE); \ 565c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath TYPE* NAME = (BUFFER)!=0 ? (BUFFER) \ 566c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath : reinterpret_cast<TYPE*>( \ 567c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath (sizeof(TYPE)*SIZE<=EIGEN_STACK_ALLOCATION_LIMIT) ? EIGEN_ALIGNED_ALLOCA(sizeof(TYPE)*SIZE) \ 568c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath : Eigen::internal::aligned_malloc(sizeof(TYPE)*SIZE) ); \ 569c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath Eigen::internal::aligned_stack_memory_handler<TYPE> EIGEN_CAT(NAME,_stack_memory_destructor)((BUFFER)==0 ? NAME : 0,SIZE,sizeof(TYPE)*SIZE>EIGEN_STACK_ALLOCATION_LIMIT) 570c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath 571c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath#else 572c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath 573c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath #define ei_declare_aligned_stack_constructed_variable(TYPE,NAME,SIZE,BUFFER) \ 574c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath Eigen::internal::check_size_for_overflow<TYPE>(SIZE); \ 575c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath TYPE* NAME = (BUFFER)!=0 ? BUFFER : reinterpret_cast<TYPE*>(Eigen::internal::aligned_malloc(sizeof(TYPE)*SIZE)); \ 576c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath Eigen::internal::aligned_stack_memory_handler<TYPE> EIGEN_CAT(NAME,_stack_memory_destructor)((BUFFER)==0 ? NAME : 0,SIZE,true) 577c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath 578c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath#endif 579c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath 580c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath 581c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath/***************************************************************************** 582c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath*** Implementation of EIGEN_MAKE_ALIGNED_OPERATOR_NEW [_IF] *** 583c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath*****************************************************************************/ 584c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath 585c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath#if EIGEN_ALIGN 586c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath #ifdef EIGEN_EXCEPTIONS 587c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath #define EIGEN_MAKE_ALIGNED_OPERATOR_NEW_NOTHROW(NeedsToAlign) \ 588c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath void* operator new(size_t size, const std::nothrow_t&) throw() { \ 589c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath try { return Eigen::internal::conditional_aligned_malloc<NeedsToAlign>(size); } \ 590c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath catch (...) { return 0; } \ 591c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath return 0; \ 592c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath } 593c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath #else 594c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath #define EIGEN_MAKE_ALIGNED_OPERATOR_NEW_NOTHROW(NeedsToAlign) \ 595c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath void* operator new(size_t size, const std::nothrow_t&) throw() { \ 596c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath return Eigen::internal::conditional_aligned_malloc<NeedsToAlign>(size); \ 597c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath } 598c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath #endif 599c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath 600c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath #define EIGEN_MAKE_ALIGNED_OPERATOR_NEW_IF(NeedsToAlign) \ 601c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath void *operator new(size_t size) { \ 602c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath return Eigen::internal::conditional_aligned_malloc<NeedsToAlign>(size); \ 603c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath } \ 604c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath void *operator new[](size_t size) { \ 605c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath return Eigen::internal::conditional_aligned_malloc<NeedsToAlign>(size); \ 606c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath } \ 607c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath void operator delete(void * ptr) throw() { Eigen::internal::conditional_aligned_free<NeedsToAlign>(ptr); } \ 608c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath void operator delete[](void * ptr) throw() { Eigen::internal::conditional_aligned_free<NeedsToAlign>(ptr); } \ 609c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath /* in-place new and delete. since (at least afaik) there is no actual */ \ 610c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath /* memory allocated we can safely let the default implementation handle */ \ 611c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath /* this particular case. */ \ 612c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath static void *operator new(size_t size, void *ptr) { return ::operator new(size,ptr); } \ 613c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath void operator delete(void * memory, void *ptr) throw() { return ::operator delete(memory,ptr); } \ 614c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath /* nothrow-new (returns zero instead of std::bad_alloc) */ \ 615c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath EIGEN_MAKE_ALIGNED_OPERATOR_NEW_NOTHROW(NeedsToAlign) \ 616c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath void operator delete(void *ptr, const std::nothrow_t&) throw() { \ 617c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath Eigen::internal::conditional_aligned_free<NeedsToAlign>(ptr); \ 618c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath } \ 619c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath typedef void eigen_aligned_operator_new_marker_type; 620c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath#else 621c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath #define EIGEN_MAKE_ALIGNED_OPERATOR_NEW_IF(NeedsToAlign) 622c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath#endif 623c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath 624c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath#define EIGEN_MAKE_ALIGNED_OPERATOR_NEW EIGEN_MAKE_ALIGNED_OPERATOR_NEW_IF(true) 625c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath#define EIGEN_MAKE_ALIGNED_OPERATOR_NEW_IF_VECTORIZABLE_FIXED_SIZE(Scalar,Size) \ 626c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath EIGEN_MAKE_ALIGNED_OPERATOR_NEW_IF(bool(((Size)!=Eigen::Dynamic) && ((sizeof(Scalar)*(Size))%16==0))) 627c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath 628c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath/****************************************************************************/ 629c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath 630c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath/** \class aligned_allocator 631c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath* \ingroup Core_Module 632c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath* 633c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath* \brief STL compatible allocator to use with with 16 byte aligned types 634c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath* 635c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath* Example: 636c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath* \code 637c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath* // Matrix4f requires 16 bytes alignment: 638c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath* std::map< int, Matrix4f, std::less<int>, 639c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath* aligned_allocator<std::pair<const int, Matrix4f> > > my_map_mat4; 640c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath* // Vector3f does not require 16 bytes alignment, no need to use Eigen's allocator: 641c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath* std::map< int, Vector3f > my_map_vec3; 642c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath* \endcode 643c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath* 644c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath* \sa \ref TopicStlContainers. 645c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath*/ 646c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamathtemplate<class T> 647c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamathclass aligned_allocator 648c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath{ 649c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamathpublic: 650c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath typedef size_t size_type; 651c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath typedef std::ptrdiff_t difference_type; 652c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath typedef T* pointer; 653c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath typedef const T* const_pointer; 654c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath typedef T& reference; 655c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath typedef const T& const_reference; 656c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath typedef T value_type; 657c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath 658c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath template<class U> 659c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath struct rebind 660c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath { 661c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath typedef aligned_allocator<U> other; 662c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath }; 663c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath 664c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath pointer address( reference value ) const 665c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath { 666c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath return &value; 667c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath } 668c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath 669c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath const_pointer address( const_reference value ) const 670c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath { 671c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath return &value; 672c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath } 673c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath 674c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath aligned_allocator() 675c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath { 676c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath } 677c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath 678c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath aligned_allocator( const aligned_allocator& ) 679c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath { 680c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath } 681c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath 682c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath template<class U> 683c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath aligned_allocator( const aligned_allocator<U>& ) 684c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath { 685c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath } 686c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath 687c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath ~aligned_allocator() 688c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath { 689c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath } 690c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath 691c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath size_type max_size() const 692c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath { 693c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath return (std::numeric_limits<size_type>::max)(); 694c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath } 695c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath 696c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath pointer allocate( size_type num, const void* hint = 0 ) 697c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath { 698c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath EIGEN_UNUSED_VARIABLE(hint); 699c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath internal::check_size_for_overflow<T>(num); 700c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath return static_cast<pointer>( internal::aligned_malloc( num * sizeof(T) ) ); 701c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath } 702c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath 703c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath void construct( pointer p, const T& value ) 704c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath { 705c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath ::new( p ) T( value ); 706c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath } 707c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath 708c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath // Support for c++11 709c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath#if (__cplusplus >= 201103L) 710c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath template<typename... Args> 711c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath void construct(pointer p, Args&&... args) 712c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath { 713c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath ::new(p) T(std::forward<Args>(args)...); 714c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath } 715c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath#endif 716c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath 717c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath void destroy( pointer p ) 718c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath { 719c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath p->~T(); 720c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath } 721c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath 722c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath void deallocate( pointer p, size_type /*num*/ ) 723c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath { 724c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath internal::aligned_free( p ); 725c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath } 726c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath 727c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath bool operator!=(const aligned_allocator<T>& ) const 728c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath { return false; } 729c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath 730c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath bool operator==(const aligned_allocator<T>& ) const 731c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath { return true; } 732c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath}; 733c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath 734c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath//---------- Cache sizes ---------- 735c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath 736c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath#if !defined(EIGEN_NO_CPUID) 737c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath# if defined(__GNUC__) && ( defined(__i386__) || defined(__x86_64__) ) 738c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath# if defined(__PIC__) && defined(__i386__) 739c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath // Case for x86 with PIC 740c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath# define EIGEN_CPUID(abcd,func,id) \ 741c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath __asm__ __volatile__ ("xchgl %%ebx, %%esi;cpuid; xchgl %%ebx,%%esi": "=a" (abcd[0]), "=S" (abcd[1]), "=c" (abcd[2]), "=d" (abcd[3]) : "a" (func), "c" (id)); 742c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath# else 743c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath // Case for x86_64 or x86 w/o PIC 744c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath# define EIGEN_CPUID(abcd,func,id) \ 745c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath __asm__ __volatile__ ("cpuid": "=a" (abcd[0]), "=b" (abcd[1]), "=c" (abcd[2]), "=d" (abcd[3]) : "a" (func), "c" (id) ); 746c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath# endif 747c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath# elif defined(_MSC_VER) 748c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath# if (_MSC_VER > 1500) 749c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath# define EIGEN_CPUID(abcd,func,id) __cpuidex((int*)abcd,func,id) 750c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath# endif 751c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath# endif 752c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath#endif 753c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath 754c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamathnamespace internal { 755c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath 756c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath#ifdef EIGEN_CPUID 757c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath 758c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamathinline bool cpuid_is_vendor(int abcd[4], const char* vendor) 759c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath{ 760c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath return abcd[1]==(reinterpret_cast<const int*>(vendor))[0] && abcd[3]==(reinterpret_cast<const int*>(vendor))[1] && abcd[2]==(reinterpret_cast<const int*>(vendor))[2]; 761c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath} 762c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath 763c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamathinline void queryCacheSizes_intel_direct(int& l1, int& l2, int& l3) 764c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath{ 765c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath int abcd[4]; 766c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath l1 = l2 = l3 = 0; 767c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath int cache_id = 0; 768c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath int cache_type = 0; 769c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath do { 770c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath abcd[0] = abcd[1] = abcd[2] = abcd[3] = 0; 771c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath EIGEN_CPUID(abcd,0x4,cache_id); 772c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath cache_type = (abcd[0] & 0x0F) >> 0; 773c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath if(cache_type==1||cache_type==3) // data or unified cache 774c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath { 775c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath int cache_level = (abcd[0] & 0xE0) >> 5; // A[7:5] 776c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath int ways = (abcd[1] & 0xFFC00000) >> 22; // B[31:22] 777c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath int partitions = (abcd[1] & 0x003FF000) >> 12; // B[21:12] 778c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath int line_size = (abcd[1] & 0x00000FFF) >> 0; // B[11:0] 779c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath int sets = (abcd[2]); // C[31:0] 780c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath 781c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath int cache_size = (ways+1) * (partitions+1) * (line_size+1) * (sets+1); 782c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath 783c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath switch(cache_level) 784c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath { 785c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath case 1: l1 = cache_size; break; 786c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath case 2: l2 = cache_size; break; 787c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath case 3: l3 = cache_size; break; 788c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath default: break; 789c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath } 790c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath } 791c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath cache_id++; 792c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath } while(cache_type>0 && cache_id<16); 793c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath} 794c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath 795c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamathinline void queryCacheSizes_intel_codes(int& l1, int& l2, int& l3) 796c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath{ 797c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath int abcd[4]; 798c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath abcd[0] = abcd[1] = abcd[2] = abcd[3] = 0; 799c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath l1 = l2 = l3 = 0; 800c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath EIGEN_CPUID(abcd,0x00000002,0); 801c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath unsigned char * bytes = reinterpret_cast<unsigned char *>(abcd)+2; 802c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath bool check_for_p2_core2 = false; 803c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath for(int i=0; i<14; ++i) 804c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath { 805c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath switch(bytes[i]) 806c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath { 807c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath case 0x0A: l1 = 8; break; // 0Ah data L1 cache, 8 KB, 2 ways, 32 byte lines 808c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath case 0x0C: l1 = 16; break; // 0Ch data L1 cache, 16 KB, 4 ways, 32 byte lines 809c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath case 0x0E: l1 = 24; break; // 0Eh data L1 cache, 24 KB, 6 ways, 64 byte lines 810c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath case 0x10: l1 = 16; break; // 10h data L1 cache, 16 KB, 4 ways, 32 byte lines (IA-64) 811c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath case 0x15: l1 = 16; break; // 15h code L1 cache, 16 KB, 4 ways, 32 byte lines (IA-64) 812c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath case 0x2C: l1 = 32; break; // 2Ch data L1 cache, 32 KB, 8 ways, 64 byte lines 813c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath case 0x30: l1 = 32; break; // 30h code L1 cache, 32 KB, 8 ways, 64 byte lines 814c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath case 0x60: l1 = 16; break; // 60h data L1 cache, 16 KB, 8 ways, 64 byte lines, sectored 815c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath case 0x66: l1 = 8; break; // 66h data L1 cache, 8 KB, 4 ways, 64 byte lines, sectored 816c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath case 0x67: l1 = 16; break; // 67h data L1 cache, 16 KB, 4 ways, 64 byte lines, sectored 817c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath case 0x68: l1 = 32; break; // 68h data L1 cache, 32 KB, 4 ways, 64 byte lines, sectored 818c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath case 0x1A: l2 = 96; break; // code and data L2 cache, 96 KB, 6 ways, 64 byte lines (IA-64) 819c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath case 0x22: l3 = 512; break; // code and data L3 cache, 512 KB, 4 ways (!), 64 byte lines, dual-sectored 820c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath case 0x23: l3 = 1024; break; // code and data L3 cache, 1024 KB, 8 ways, 64 byte lines, dual-sectored 821c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath case 0x25: l3 = 2048; break; // code and data L3 cache, 2048 KB, 8 ways, 64 byte lines, dual-sectored 822c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath case 0x29: l3 = 4096; break; // code and data L3 cache, 4096 KB, 8 ways, 64 byte lines, dual-sectored 823c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath case 0x39: l2 = 128; break; // code and data L2 cache, 128 KB, 4 ways, 64 byte lines, sectored 824c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath case 0x3A: l2 = 192; break; // code and data L2 cache, 192 KB, 6 ways, 64 byte lines, sectored 825c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath case 0x3B: l2 = 128; break; // code and data L2 cache, 128 KB, 2 ways, 64 byte lines, sectored 826c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath case 0x3C: l2 = 256; break; // code and data L2 cache, 256 KB, 4 ways, 64 byte lines, sectored 827c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath case 0x3D: l2 = 384; break; // code and data L2 cache, 384 KB, 6 ways, 64 byte lines, sectored 828c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath case 0x3E: l2 = 512; break; // code and data L2 cache, 512 KB, 4 ways, 64 byte lines, sectored 829c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath case 0x40: l2 = 0; break; // no integrated L2 cache (P6 core) or L3 cache (P4 core) 830c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath case 0x41: l2 = 128; break; // code and data L2 cache, 128 KB, 4 ways, 32 byte lines 831c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath case 0x42: l2 = 256; break; // code and data L2 cache, 256 KB, 4 ways, 32 byte lines 832c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath case 0x43: l2 = 512; break; // code and data L2 cache, 512 KB, 4 ways, 32 byte lines 833c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath case 0x44: l2 = 1024; break; // code and data L2 cache, 1024 KB, 4 ways, 32 byte lines 834c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath case 0x45: l2 = 2048; break; // code and data L2 cache, 2048 KB, 4 ways, 32 byte lines 835c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath case 0x46: l3 = 4096; break; // code and data L3 cache, 4096 KB, 4 ways, 64 byte lines 836c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath case 0x47: l3 = 8192; break; // code and data L3 cache, 8192 KB, 8 ways, 64 byte lines 837c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath case 0x48: l2 = 3072; break; // code and data L2 cache, 3072 KB, 12 ways, 64 byte lines 838c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath case 0x49: if(l2!=0) l3 = 4096; else {check_for_p2_core2=true; l3 = l2 = 4096;} break;// code and data L3 cache, 4096 KB, 16 ways, 64 byte lines (P4) or L2 for core2 839c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath case 0x4A: l3 = 6144; break; // code and data L3 cache, 6144 KB, 12 ways, 64 byte lines 840c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath case 0x4B: l3 = 8192; break; // code and data L3 cache, 8192 KB, 16 ways, 64 byte lines 841c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath case 0x4C: l3 = 12288; break; // code and data L3 cache, 12288 KB, 12 ways, 64 byte lines 842c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath case 0x4D: l3 = 16384; break; // code and data L3 cache, 16384 KB, 16 ways, 64 byte lines 843c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath case 0x4E: l2 = 6144; break; // code and data L2 cache, 6144 KB, 24 ways, 64 byte lines 844c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath case 0x78: l2 = 1024; break; // code and data L2 cache, 1024 KB, 4 ways, 64 byte lines 845c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath case 0x79: l2 = 128; break; // code and data L2 cache, 128 KB, 8 ways, 64 byte lines, dual-sectored 846c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath case 0x7A: l2 = 256; break; // code and data L2 cache, 256 KB, 8 ways, 64 byte lines, dual-sectored 847c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath case 0x7B: l2 = 512; break; // code and data L2 cache, 512 KB, 8 ways, 64 byte lines, dual-sectored 848c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath case 0x7C: l2 = 1024; break; // code and data L2 cache, 1024 KB, 8 ways, 64 byte lines, dual-sectored 849c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath case 0x7D: l2 = 2048; break; // code and data L2 cache, 2048 KB, 8 ways, 64 byte lines 850c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath case 0x7E: l2 = 256; break; // code and data L2 cache, 256 KB, 8 ways, 128 byte lines, sect. (IA-64) 851c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath case 0x7F: l2 = 512; break; // code and data L2 cache, 512 KB, 2 ways, 64 byte lines 852c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath case 0x80: l2 = 512; break; // code and data L2 cache, 512 KB, 8 ways, 64 byte lines 853c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath case 0x81: l2 = 128; break; // code and data L2 cache, 128 KB, 8 ways, 32 byte lines 854c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath case 0x82: l2 = 256; break; // code and data L2 cache, 256 KB, 8 ways, 32 byte lines 855c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath case 0x83: l2 = 512; break; // code and data L2 cache, 512 KB, 8 ways, 32 byte lines 856c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath case 0x84: l2 = 1024; break; // code and data L2 cache, 1024 KB, 8 ways, 32 byte lines 857c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath case 0x85: l2 = 2048; break; // code and data L2 cache, 2048 KB, 8 ways, 32 byte lines 858c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath case 0x86: l2 = 512; break; // code and data L2 cache, 512 KB, 4 ways, 64 byte lines 859c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath case 0x87: l2 = 1024; break; // code and data L2 cache, 1024 KB, 8 ways, 64 byte lines 860c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath case 0x88: l3 = 2048; break; // code and data L3 cache, 2048 KB, 4 ways, 64 byte lines (IA-64) 861c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath case 0x89: l3 = 4096; break; // code and data L3 cache, 4096 KB, 4 ways, 64 byte lines (IA-64) 862c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath case 0x8A: l3 = 8192; break; // code and data L3 cache, 8192 KB, 4 ways, 64 byte lines (IA-64) 863c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath case 0x8D: l3 = 3072; break; // code and data L3 cache, 3072 KB, 12 ways, 128 byte lines (IA-64) 864c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath 865c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath default: break; 866c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath } 867c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath } 868c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath if(check_for_p2_core2 && l2 == l3) 869c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath l3 = 0; 870c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath l1 *= 1024; 871c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath l2 *= 1024; 872c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath l3 *= 1024; 873c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath} 874c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath 875c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamathinline void queryCacheSizes_intel(int& l1, int& l2, int& l3, int max_std_funcs) 876c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath{ 877c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath if(max_std_funcs>=4) 878c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath queryCacheSizes_intel_direct(l1,l2,l3); 879c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath else 880c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath queryCacheSizes_intel_codes(l1,l2,l3); 881c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath} 882c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath 883c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamathinline void queryCacheSizes_amd(int& l1, int& l2, int& l3) 884c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath{ 885c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath int abcd[4]; 886c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath abcd[0] = abcd[1] = abcd[2] = abcd[3] = 0; 887c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath EIGEN_CPUID(abcd,0x80000005,0); 888c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath l1 = (abcd[2] >> 24) * 1024; // C[31:24] = L1 size in KB 889c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath abcd[0] = abcd[1] = abcd[2] = abcd[3] = 0; 890c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath EIGEN_CPUID(abcd,0x80000006,0); 891c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath l2 = (abcd[2] >> 16) * 1024; // C[31;16] = l2 cache size in KB 892c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath l3 = ((abcd[3] & 0xFFFC000) >> 18) * 512 * 1024; // D[31;18] = l3 cache size in 512KB 893c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath} 894c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath#endif 895c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath 896c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath/** \internal 897c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath * Queries and returns the cache sizes in Bytes of the L1, L2, and L3 data caches respectively */ 898c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamathinline void queryCacheSizes(int& l1, int& l2, int& l3) 899c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath{ 900c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath #ifdef EIGEN_CPUID 901c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath int abcd[4]; 902c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath 903c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath // identify the CPU vendor 904c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath EIGEN_CPUID(abcd,0x0,0); 905c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath int max_std_funcs = abcd[1]; 906c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath if(cpuid_is_vendor(abcd,"GenuineIntel")) 907c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath queryCacheSizes_intel(l1,l2,l3,max_std_funcs); 908c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath else if(cpuid_is_vendor(abcd,"AuthenticAMD") || cpuid_is_vendor(abcd,"AMDisbetter!")) 909c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath queryCacheSizes_amd(l1,l2,l3); 910c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath else 911c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath // by default let's use Intel's API 912c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath queryCacheSizes_intel(l1,l2,l3,max_std_funcs); 913c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath 914c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath // here is the list of other vendors: 915c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath// ||cpuid_is_vendor(abcd,"VIA VIA VIA ") 916c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath// ||cpuid_is_vendor(abcd,"CyrixInstead") 917c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath// ||cpuid_is_vendor(abcd,"CentaurHauls") 918c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath// ||cpuid_is_vendor(abcd,"GenuineTMx86") 919c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath// ||cpuid_is_vendor(abcd,"TransmetaCPU") 920c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath// ||cpuid_is_vendor(abcd,"RiseRiseRise") 921c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath// ||cpuid_is_vendor(abcd,"Geode by NSC") 922c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath// ||cpuid_is_vendor(abcd,"SiS SiS SiS ") 923c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath// ||cpuid_is_vendor(abcd,"UMC UMC UMC ") 924c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath// ||cpuid_is_vendor(abcd,"NexGenDriven") 925c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath #else 926c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath l1 = l2 = l3 = -1; 927c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath #endif 928c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath} 929c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath 930c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath/** \internal 931c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath * \returns the size in Bytes of the L1 data cache */ 932c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamathinline int queryL1CacheSize() 933c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath{ 934c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath int l1(-1), l2, l3; 935c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath queryCacheSizes(l1,l2,l3); 936c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath return l1; 937c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath} 938c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath 939c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath/** \internal 940c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath * \returns the size in Bytes of the L2 or L3 cache if this later is present */ 941c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamathinline int queryTopLevelCacheSize() 942c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath{ 943c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath int l1, l2(-1), l3(-1); 944c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath queryCacheSizes(l1,l2,l3); 945c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath return (std::max)(l2,l3); 946c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath} 947c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath 948c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath} // end namespace internal 949c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath 950c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath} // end namespace Eigen 951c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath 952c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath#endif // EIGEN_MEMORY_H 953