jdZddlZddlZddlZddlZddlmZdZdZdZdZ Gdd ej Z d Z Gd d ej Z d ZdadZdZdZdZdS)zRead ahead of mapped weights that a drive must read, before copies that split them across threads (Windows): cold_ranges finds them, prefetch_ranges reads them with large requests.N)tqdmii@ic2eZdZdejfdejfgZdS)_RangeaddresssizeN__name__ __module__ __qualname__ctypesc_void_pc_size_t_fields_7C:\Users\johnn\OneDrive\Documents\AI\mmgp\read_ahead.pyrrs&FO,vv.GHHHHrrc8tjdkrdStjdd} |jn#t $rYdSwxYwtjtjtjttj g_ tj _ fd}|S)Nwin32kernel32Tuse_last_errorctt|zd|D}tjdt||ds%tjtjdS)Nc3<K|]\}}t||VdS)N)r).0rrs r z6_windows_prefetch..prefetch..!s0([([=7D)>)>([([([([([([rr)rlenr rWinErrorget_last_error)rangesarrayhints rprefetchz#_windows_prefetch..prefetch ss#f++%([([TZ([([([\tFOB''UUA>> ;/&"7"9"9:: : ; ;r)sysplatformr WinDLLPrefetchVirtualMemoryAttributeErrorrrPOINTERrc_ulongargtypesc_intrestype)kernelr$r#s @r_windows_prefetchr0s |wt ]:d ; ; ;F+ tt_fov~f7M7Mv~^DM.resident..6s/7n7nY`8HRS8T8T7n7n7n7n7n7nrrc"g|] }|jdz S)r3)rentrys r z9_windows_cold_hints..resident..9s ::: 1$:::r)r2rr rsizeofrr ) addressesentriesquerys rresidentz%_windows_cold_hints..resident5s#c)nn47n7ndm7n7n7nouV_R(('6=3I3IJJ ;/&"7"9"9:: :::'::::rc|D][}tj}tj|jtj|z t krdS\dS)NTF)timeperf_counter_nsr c_char from_addressvalue COLD_TOUCH_NS)r=rstarts ron_diskz$_windows_cold_hints..on_disk:sb   G(**E M & &w / / 5 5#%%- ==tt>ur) r0r r'K32QueryWorkingSetExrr+r,r-r.)r$r@rIr?s @r_windows_cold_hintsrK+s!""Ht M*T : : : OEovGENLEM;;;;;  Xw &&rcbt"tjdkrtndpdatS)NrF) _cold_hintsr%r&rKrrr_hintsrNMs103 0G0G*,,,T[V[ rc8datjd|dS)NFzQ[MMGP] Prefetch of the weights not in RAM disabled after an error of the system: )rMrwrite)errors r_disablerRTs'KJjchjjkkkkkrc t}|sgStj}g}|D]X\}}||z|z||z}}t||tD]/}||t ||tzf0Y|sgS|\} } } g} t|| d|DD]j\\}}} | r ||zdz |z|z}| r8|| ddkr&t| dd|| dd<S| ||gk| r*| | dd| dd|z hr| ngS#t$r}t|gcYd}~Sd}~wwxYw)a/The parts of ranges ((address, byte count), in copy order) that a drive must read, as page-aligned [start, end] lists: empty when all of them are in RAM or the system offers no hints. Costs a query of one page per COLD_SEGMENT, and one first touch when some are not in the working set (Windows).cg|]\}}|Srr)rrH_s rr;zcold_ranges..ls<\<\<\xuaU<\<\<\rr9rrN) rNmmapPAGESIZErange COLD_SEGMENTappendminzipmaxOSErrorrR)r!hintspagesegmentsrrrHendsegmentr@rUrIcoldpresentrQs r cold_rangesrfZs HHE  =DHII _t+Wt^sUC66 I IG OOWc#w/E&F&FG H H H H I   Ha %(88<\<\S[<\<\<\3]3]%^%^ * * !LUC' :>d*T1C *b!,,!$r(1+s33R  UCL))))QaT"Xa[45G(H I IQttrQ  sB=E E*E%E*%E*cVt}|r|sdStjfd|D} tdt |t D]-}|dd|||t zD.dS#t $r}t|Yd}~dSd}~wwxYw)zGReads ranges ([start, end] address pairs) into RAM with large requests.NcBg|]\}}|zz|zdz zzfSr8r)rrHrbr`s rr;z#prefetch_ranges..s> _ _ _*%QTu}t#cDj1n%=%DE _ _ _rrr9c"g|] \}}|||z f Srr)rrHrbs rr;z#prefetch_ranges..s%^^^zucucEk*^^^r)rNrVrWrXr MAX_RANGESr^rR)r!r_indexrQr`s @rprefetch_rangesrlzs HHE  =D _ _ _ _X^ _ _ _F1c&kk:66 ` `E E!H^^VE%R\J\D\=]^^^ _ _ _ _ ` ` sAB B(B##B()__doc__r rVr%rBrrjrYrG COLD_PIECE Structurerr0r2rKrMrNrRrfrlrrrrps433     IIIIIV III"OOOOOv'OOO'''2 lll @     r