Method AllocateAligned

cpp/src/arrow/memory_pool.cc:393–404

class MimallocAllocator {
 public:
  static Status AllocateAligned(int64_t size, int64_t alignment, uint8_t** out) {
    if (size == 0) {
      *out = memory_pool::internal::kZeroSizeArea;
      return Status::OK();
    }
    *out = reinterpret_cast<uint8_t*>(arrow_mi_malloc_aligned(
        static_cast<size_t>(size), static_cast<size_t>(alignment)));
    if (*out == NULL) {
      return Status::OutOfMemory("malloc of size ", size, " failed");
    }
    return Status::OK();
  }

  static void ReleaseUnused() { arrow_mi_collect(true); }