Function EfiReallocatePool

rEFIt_UEFI/libeg/BmLib.cpp:276–299

Adjusts the size of a previously allocated buffer. @param OldPool - A pointer to the buffer whose size is being adjusted. @param OldSize - The size of the current buffer. @param NewSize - The size of the new buffer. @return The newly allocated buffer. @retval NULL Allocation failed. **/

**/
VOID *
EfiReallocatePool (
  IN VOID                 *OldPool,
  IN UINTN                OldSize,
  IN UINTN                NewSize
  )
{
  VOID  *NewPool;

  NewPool = NULL;
  if (NewSize != 0) {
    NewPool = (__typeof__(NewPool))AllocateZeroPool(NewSize);
  }

  if (OldPool != NULL) {
    if (NewPool != NULL) {
      CopyMem(NewPool, OldPool, OldSize < NewSize ? OldSize : NewSize);
    }

    FreePool(OldPool);
  }

  return NewPool;
}

/**
  Compare two EFI_TIME data.