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Basic: support _aligned_malloc on Windows

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Use `_aligned_malloc` and `_aligned_free` on Windows as it does not have the
POSIX interfaces `posix_memalign`.  `_aligned_malloc` has an associated
`_aligned_free` instead of the normal `free` call.
This commit is contained in:
Saleem Abdulrasool
2016-06-17 13:34:49 -07:00
parent 3081a1e9bc
commit 1aee71a4b6
1 changed files with 12 additions and 4 deletions
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16
include/swift/Basic/Malloc.h
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@@ -23,7 +23,7 @@
namespace swift {
// FIXME: Use C11 aligned_alloc or Windows _aligned_malloc if available.
// FIXME: Use C11 aligned_alloc if available.
inline void *AlignedAlloc(size_t size, size_t align) {
// posix_memalign only accepts alignments greater than sizeof(void*).
//
@@ -31,17 +31,25 @@ inline void *AlignedAlloc(size_t size, size_t align) {
align = sizeof(void*);
void *r;
#if defined(_WIN32)
r = _aligned_malloc(size, align);
assert(r && "_aligned_malloc failed");
#else
int res = posix_memalign(&r, align, size);
assert(res == 0 && "posix_memalign failed");
(void)res; // Silence the unused variable warning.
#endif
return r;
}
// FIXME: Use Windows _aligned_free if available.
inline void AlignedFree(void *p) {
#if defined(_WIN32)
_aligned_free(p);
#else
free(p);
#endif
}
} // end namespace swift
#endif // SWIFT_BASIC_MALLOC_H