o h4@sxdZddlZddlZddlmZmZddlmZgdZddZdd ZGd d d Z Gd d d Z Gddde Z dS)zlModule containing a memory memory manager which provides a sliding window on a number of memory mapped filesN)mmap ACCESS_READALLOCATIONGRANULARITY) align_to_mmap is_64_bit MapWindow MapRegion MapRegionListrcCs$|tt}|r||kr|t7}|S)a= Align the given integer number to the closest page offset, which usually is 4096 bytes. :param round_up: if True, the next higher multiple of page size is used, otherwise the lower page_size will be used (i.e. if True, 1 becomes 4096, otherwise it becomes 0) :return: num rounded to closest pager)numround_upresr>/var/www/vscode/kcb/lib/python3.10/site-packages/smmap/util.pyrs  rcCs tjdkS)zO:return: True if the system is 64 bit. Otherwise it can be assumed to be 32 bitl)sysmaxsizerrrrrs rc@sPeZdZdZdZddZddZeddZd d Z d d Z d dZ ddZ dS)rzWUtility type which is used to snap windows towards each other, and to adjust their sizeofssizecCs||_||_dSNr)selfoffsetrrrr__init__- zMapWindow.__init__cCsd|j|jfS)NzMapWindow(%i, %i)rrrrr__repr__1szMapWindow.__repr__cCs||j|S)z!:return: new window from a region_br)clsregionrrr from_region4szMapWindow.from_regioncC |j|jSrrrrrrofs_end9 zMapWindow.ofs_endcCs8t|jd}|j|j|7_||_t|jd|_dS)zrrrrrrszMapRegion.__repr__cC|jS)z':return: a buffer containing the memoryr4rrrrbufferzMapRegion.buffercCrN)z+:return: a memory map containing the memoryrOrrrrmaprQz MapRegion.mapcCrN)z>:return: absolute byte offset to the first byte of the mapping)rrrrr ofs_beginrQzMapRegion.ofs_begincCrN)z1:return: total size of the mapped region in bytes)r6rrrrrrQzMapRegion.sizecCr!)zE:return: Absolute offset to one byte beyond the mapping into the filerr6rrrrr"s zMapRegion.ofs_endcCs"|j|ko|j|jkSS)zB:return: True if the given offset can be read in our mapped regionrTrrrrr includes_ofss"zMapRegion.includes_ofscCrN)z6:return: number of clients currently using this region)r5rrrr client_countrQzMapRegion.client_countr$cCsB|j|7_|jdksJd|j|dkr|dSdS)zAdjust the usage count by the given positive or negative offset. If usage count equals 0, we will auto-release our resources :return: True if we released resources, False otherwise. In the latter case, we can still be usedzs  .m