Function _mi_heap_malloc_zero_ex

3rd/mimalloc-2.0.9/src/alloc.c:127–146

The main allocation function

// The main allocation function
extern inline void* _mi_heap_malloc_zero_ex(mi_heap_t* heap, size_t size, bool zero, size_t huge_alignment) mi_attr_noexcept {
  if mi_likely(size <= MI_SMALL_SIZE_MAX) {
    mi_assert_internal(huge_alignment == 0);
    return mi_heap_malloc_small_zero(heap, size, zero);
  }
  else {
    mi_assert(heap!=NULL);
    mi_assert(heap->thread_id == 0 || heap->thread_id == _mi_thread_id());   // heaps are thread local
    void* const p = _mi_malloc_generic(heap, size + MI_PADDING_SIZE, zero, huge_alignment);  // note: size can overflow but it is detected in malloc_generic
    mi_assert_internal(p == NULL || mi_usable_size(p) >= size);
    #if MI_STAT>1
    if (p != NULL) {
      if (!mi_heap_is_initialized(heap)) { heap = mi_get_default_heap(); }
      mi_heap_stat_increase(heap, malloc, mi_usable_size(p));
    }
    #endif
    mi_track_malloc(p,size,zero);
    return p;
  }
}

extern inline void* _mi_heap_malloc_zero(mi_heap_t* heap, size_t size, bool zero) mi_attr_noexcept {
  return _mi_heap_malloc_zero_ex(heap, size, zero, 0);