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Unknown | 1994-08-11 | 971 b |
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|00000000| 00 15 3d 46 69 67 75 72 | 65 20 31 2d 31 09 4d 65 |..=Figur|e 1-1.Me|
|00000010| 6d 6f 72 79 20 6f 72 67 | 61 6e 69 7a 61 74 69 6f |mory org|anizatio|
|00000020| 6e 20 77 69 74 68 20 73 | 65 76 65 72 61 6c 20 61 |n with s|everal a|
|00000030| 70 70 6c 69 63 61 74 69 | 6f 6e 73 20 6f 70 65 6e |pplicati|ons open|
|00000040| 33 46 69 67 75 72 65 20 | 31 2d 32 09 4f 72 67 61 |3Figure |1-2.Orga|
|00000050| 6e 69 7a 61 74 69 6f 6e | 20 6f 66 20 61 6e 20 61 |nization| of an a|
|00000060| 70 70 6c 69 63 61 74 69 | 6f 6e 20 70 61 72 74 69 |pplicati|on parti|
|00000070| 74 69 6f 6e 20 46 69 67 | 75 72 65 20 31 2d 33 09 |tion Fig|ure 1-3.|
|00000080| 54 68 65 20 61 70 70 6c | 69 63 61 74 69 6f 6e 20 |The appl|ication |
|00000090| 73 74 61 63 6b 1c 46 69 | 67 75 72 65 20 31 2d 34 |stack.Fi|gure 1-4|
|000000a0| 09 41 20 66 72 61 67 6d | 65 6e 74 65 64 20 68 65 |.A fragm|ented he|
|000000b0| 61 70 1b 46 69 67 75 72 | 65 20 31 2d 35 09 41 20 |ap.Figur|e 1-5.A |
|000000c0| 63 6f 6d 70 61 63 74 65 | 64 20 68 65 61 70 34 46 |compacte|d heap4F|
|000000d0| 69 67 75 72 65 20 31 2d | 36 09 4f 72 67 61 6e 69 |igure 1-|6.Organi|
|000000e0| 7a 61 74 69 6f 6e 20 6f | 66 20 61 6e 20 61 70 70 |zation o|f an app|
|000000f0| 6c 69 63 61 74 69 6f 6e | d5 73 20 41 35 20 77 6f |lication|.s A5 wo|
|00000100| 72 6c 64 3b 46 69 67 75 | 72 65 20 31 2d 37 09 55 |rld;Figu|re 1-7.U|
|00000110| 73 69 6e 67 20 74 65 6d | 70 6f 72 61 72 79 20 6d |sing tem|porary m|
|00000120| 65 6d 6f 72 79 20 61 6c | 6c 6f 63 61 74 65 64 20 |emory al|located |
|00000130| 66 72 6f 6d 20 75 6e 75 | 73 65 64 20 52 41 4d 2e |from unu|sed RAM.|
|00000140| 46 69 67 75 72 65 20 31 | 2d 38 09 41 20 70 6f 69 |Figure 1|-8.A poi|
|00000150| 6e 74 65 72 20 74 6f 20 | 61 20 6e 6f 6e 72 65 6c |nter to |a nonrel|
|00000160| 6f 63 61 74 61 62 6c 65 | 20 62 6c 6f 63 6b 2a 46 |ocatable| block*F|
|00000170| 69 67 75 72 65 20 31 2d | 39 09 41 20 68 61 6e 64 |igure 1-|9.A hand|
|00000180| 6c 65 20 74 6f 20 61 20 | 72 65 6c 6f 63 61 74 61 |le to a |relocata|
|00000190| 62 6c 65 20 62 6c 6f 63 | 6b 38 46 69 67 75 72 65 |ble bloc|k8Figure|
|000001a0| 20 31 2d 31 30 09 50 75 | 72 67 69 6e 67 20 61 6e | 1-10.Pu|rging an|
|000001b0| 64 20 72 65 61 6c 6c 6f | 63 61 74 69 6e 67 20 61 |d reallo|cating a|
|000001c0| 20 72 65 6c 6f 63 61 74 | 61 62 6c 65 20 62 6c 6f | relocat|able blo|
|000001d0| 63 6b 2d 46 69 67 75 72 | 65 20 31 2d 31 31 09 41 |ck-Figur|e 1-11.A|
|000001e0| 6c 6c 6f 63 61 74 69 6e | 67 20 61 20 6e 6f 6e 72 |llocatin|g a nonr|
|000001f0| 65 6c 6f 63 61 74 61 62 | 6c 65 20 62 6c 6f 63 6b |elocatab|le block|
|00000200| 2b 46 69 67 75 72 65 20 | 31 2d 31 32 09 41 6e 20 |+Figure |1-12.An |
|00000210| 65 66 66 65 63 74 69 76 | 65 6c 79 20 70 61 72 74 |effectiv|ely part|
|00000220| 69 74 69 6f 6e 65 64 20 | 68 65 61 70 2a 46 69 67 |itioned |heap*Fig|
|00000230| 75 72 65 20 32 2d 31 09 | 41 20 62 6c 6f 63 6b 20 |ure 2-1.|A block |
|00000240| 68 65 61 64 65 72 20 69 | 6e 20 61 20 32 34 2d 62 |header i|n a 24-b|
|00000250| 69 74 20 7a 6f 6e 65 2a | 46 69 67 75 72 65 20 32 |it zone*|Figure 2|
|00000260| 2d 32 09 41 20 62 6c 6f | 63 6b 20 68 65 61 64 65 |-2.A blo|ck heade|
|00000270| 72 20 69 6e 20 61 20 33 | 32 2d 62 69 74 20 7a 6f |r in a 3|2-bit zo|
|00000280| 6e 65 36 46 69 67 75 72 | 65 20 33 2d 31 09 32 34 |ne6Figur|e 3-1.24|
|00000290| 2d 62 69 74 20 4d 65 6d | 6f 72 79 20 4d 61 6e 61 |-bit Mem|ory Mana|
|000002a0| 67 65 72 20 6c 6f 67 69 | 63 61 6c 20 61 64 64 72 |ger logi|cal addr|
|000002b0| 65 73 73 20 73 70 61 63 | 65 36 46 69 67 75 72 65 |ess spac|e6Figure|
|000002c0| 20 33 2d 32 09 33 32 2d | 62 69 74 20 4d 65 6d 6f | 3-2.32-|bit Memo|
|000002d0| 72 79 20 4d 61 6e 61 67 | 65 72 20 6c 6f 67 69 63 |ry Manag|er logic|
|000002e0| 61 6c 20 61 64 64 72 65 | 73 73 20 73 70 61 63 65 |al addre|ss space|
|000002f0| 4a 46 69 67 75 72 65 20 | 33 2d 33 09 54 68 65 20 |JFigure |3-3.The |
|00000300| 70 68 79 73 69 63 61 6c | 20 61 64 64 72 65 73 73 |physical| address|
|00000310| 20 73 70 61 63 65 20 6f | 6e 20 61 20 4d 61 63 69 | space o|n a Maci|
|00000320| 6e 74 6f 73 68 20 49 49 | 63 69 20 77 69 74 68 20 |ntosh II|ci with |
|00000330| 38 20 4d 42 20 6f 66 20 | 52 41 4d 23 46 69 67 75 |8 MB of |RAM#Figu|
|00000340| 72 65 20 34 2d 31 09 54 | 68 65 20 4d 65 6d 6f 72 |re 4-1.T|he Memor|
|00000350| 79 20 63 6f 6e 74 72 6f | 6c 20 70 61 6e 65 6c 25 |y contro|l panel%|
|00000360| 46 69 67 75 72 65 20 34 | 2d 32 09 49 6e 69 74 69 |Figure 4|-2.Initi|
|00000370| 61 6c 69 7a 69 6e 67 20 | 61 20 73 74 61 74 75 73 |alizing |a status|
|00000380| 20 63 6f 64 65 1d 46 69 | 67 75 72 65 20 34 2d 33 | code.Fi|gure 4-3|
|00000390| 09 52 65 61 64 69 6e 67 | 20 73 74 61 6c 65 20 64 |.Reading| stale d|
|000003a0| 61 74 61 27 46 69 67 75 | 72 65 20 34 2d 34 09 52 |ata'Figu|re 4-4.R|
|000003b0| 65 61 64 69 6e 67 20 69 | 6e 76 61 6c 69 64 20 69 |eading i|nvalid i|
|000003c0| 6e 73 74 72 75 63 74 69 | 6f 6e 73 |nstructi|ons |
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