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More aligned_alloc changes to support Android

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Move to posix_memalign for those platforms, in particular android,
that do not fully support c++17 std::aligned_alloc() (and are not windows)

see https://github.com/official-stockfish/Stockfish/issues/2860

closes https://github.com/official-stockfish/Stockfish/pull/2973

No functional change
This commit is contained in:
Joost VandeVondele
2020-08-10 16:14:17 +02:00
parent 4ab8b0b738
commit 399cddf444
1 changed files with 11 additions and 3 deletions
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src/misc.cpp
+11 -3
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@@ -51,6 +51,11 @@ typedef bool(*fun3_t)(HANDLE, CONST GROUP_AFFINITY*, PGROUP_AFFINITY);
#include <sys/mman.h> #include <sys/mman.h>
#endif #endif
#if (defined(__APPLE__) && defined(_LIBCPP_HAS_C11_FEATURES)) || defined(__ANDROID__) || defined(__OpenBSD__) || (defined(__GLIBCXX__) && !defined(_GLIBCXX_HAVE_ALIGNED_ALLOC) && !defined(_WIN32))
#define POSIXALIGNEDALLOC
#include <stdlib.h>
#endif
#include "misc.h" #include "misc.h"
#include "thread.h" #include "thread.h"
@@ -318,8 +323,11 @@ void prefetch(void* addr) {
/// ///
void* std_aligned_alloc(size_t alignment, size_t size) { void* std_aligned_alloc(size_t alignment, size_t size) {
#if (defined(__APPLE__) && defined(_LIBCPP_HAS_C11_FEATURES)) || defined(__ANDROID__) || defined(__OpenBSD__) || (defined(__GLIBCXX__) && !defined(_GLIBCXX_HAVE_ALIGNED_ALLOC) && !defined(_WIN32)) #if defined(POSIXALIGNEDALLOC)
return aligned_alloc(alignment, size); void *pointer;
if(posix_memalign(&pointer, alignment, size) == 0)
return pointer;
return nullptr;
#elif (defined(_WIN32) || (defined(__APPLE__) && !defined(_LIBCPP_HAS_C11_FEATURES))) #elif (defined(_WIN32) || (defined(__APPLE__) && !defined(_LIBCPP_HAS_C11_FEATURES)))
return _mm_malloc(size, alignment); return _mm_malloc(size, alignment);
#else #else
@@ -328,7 +336,7 @@ void* std_aligned_alloc(size_t alignment, size_t size) {
} }
void std_aligned_free(void* ptr) { void std_aligned_free(void* ptr) {
#if (defined(__APPLE__) && defined(_LIBCPP_HAS_C11_FEATURES)) || defined(__ANDROID__) || defined(__OpenBSD__) || (defined(__GLIBCXX__) && !defined(_GLIBCXX_HAVE_ALIGNED_ALLOC) && !defined(_WIN32)) #if defined(POSIXALIGNEDALLOC)
free(ptr); free(ptr);
#elif (defined(_WIN32) || (defined(__APPLE__) && !defined(_LIBCPP_HAS_C11_FEATURES))) #elif (defined(_WIN32) || (defined(__APPLE__) && !defined(_LIBCPP_HAS_C11_FEATURES)))
_mm_free(ptr); _mm_free(ptr);