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MacBinary | 1992-05-14 | 41.0 KB | [ MW2D/MWII]
open in: MacOS 8.1
extracted
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Win98
extracted
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DOS
extracted
view JSON data
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view as text
This file was processed as: MacBinary
(archive/macBinary ).
You can browse this item here: Shane Looker
Confidence Program Detection Match Type Support
100%
dexvert
MacWrite Document (document/macWrite)
idMeta
Supported
10%
dexvert
MacBinary (archive/macBinary)
fallback
Supported
100%
file
MacBinary II, inited, Sat May 9 14:58:23 1992, modified Thu May 14 15:31:42 1992, creator 'MWII', type 'MW2D', 41472 bytes "Shane Looker" , at 0xa280 286 bytes resource
default (weak)
99%
file
data
default
74%
TrID
Mac MacWrite II document (MacBinary)
default
25%
TrID
MacBinary 2
default (weak)
100%
siegfried
fmt/1762 MacBinary (II)
default
100%
lsar
MacBinary
default
id metadata key value macFileType [ MW2D] macFileCreator [ MWII]
hex view +--------+-------------------------+-------------------------+--------+--------+ |00000000| 00 0c 53 68 61 6e 65 20 | 4c 6f 6f 6b 65 72 00 00 |..Shane |Looker..| |00000010| 00 00 00 00 00 00 00 00 | 00 00 00 00 00 00 00 00 |........|........| |00000020| 00 00 00 00 00 00 00 00 | 00 00 00 00 00 00 00 00 |........|........| |00000030| 00 00 00 00 00 00 00 00 | 00 00 00 00 00 00 00 00 |........|........| |00000040| 00 4d 57 32 44 4d 57 49 | 49 01 00 00 00 00 00 00 |.MW2DMWI|I.......| |00000050| 00 00 00 00 00 a2 00 00 | 00 01 1e a6 31 d1 4f a6 |........|....1.O.| |00000060| 38 70 9e 00 00 00 00 00 | 00 00 00 00 00 00 00 00 |8p......|........| |00000070| 00 00 00 00 00 00 00 00 | 00 00 81 81 4d 94 00 00 |........|....M...| |00000080| 00 2e 00 2e 00 03 00 00 | 00 48 00 48 00 00 00 00 |........|.H.H....| |00000090| 02 da 02 28 ff e1 ff e2 | 02 f9 02 46 03 47 05 28 |...(....|...F.G.(| |000000a0| 03 fc 00 02 00 00 00 48 | 00 48 00 00 00 00 02 da |.......H|.H......| |000000b0| 02 28 00 01 00 00 00 64 | 00 00 00 01 00 01 01 01 |.(.....d|........| |000000c0| 00 00 00 01 27 0f 00 01 | 00 01 00 00 00 00 00 00 |....'...|........| |000000d0| 00 00 00 00 00 00 00 02 | 00 19 01 90 00 00 00 00 |........|........| |000000e0| 00 40 00 00 00 00 00 00 | 00 00 00 01 00 00 00 00 |.@......|........| |000000f0| 00 00 00 00 00 00 00 00 | 00 00 00 00 00 00 06 80 |........|........| |00000100| 01 00 00 00 01 00 01 06 | 12 01 00 02 01 2c 00 00 |........|.....,..| |00000110| 00 00 00 3c 00 0a 03 1a | 80 00 02 66 80 00 00 48 |...<....|...f...H| |00000120| 80 00 00 48 80 00 00 48 | 80 00 00 24 80 00 00 02 |...H...H|...$....| |00000130| 00 36 00 00 20 00 00 00 | fd 80 33 33 00 06 00 00 |.6.. ...|..33....| |00000140| 00 00 00 01 a0 00 00 01 | 00 00 00 01 6f 66 00 00 |........|....of..| |00000150| 00 00 00 00 00 08 00 09 | 00 01 00 00 00 00 00 00 |........|........| |00000160| 00 00 00 00 00 00 00 00 | 00 00 00 00 00 00 00 00 |........|........| |00000170| 00 00 00 00 00 00 73 62 | 00 00 73 62 00 00 00 00 |......sb|..sb....| |00000180| 00 28 00 04 01 8b 02 7b | 00 48 00 48 00 00 00 00 |.(.....{|.H.H....| |00000190| 00 00 00 00 00 00 00 00 | 00 00 00 00 00 00 00 00 |........|........| |000001a0| 00 00 00 00 00 00 00 00 | 00 00 00 00 00 00 00 00 |........|........| |000001b0| 00 00 00 00 00 00 00 00 | 00 00 00 00 00 00 00 00 |........|........| |000001c0| 00 00 00 00 00 00 00 00 | 00 00 00 00 00 00 00 00 |........|........| |000001d0| 00 00 00 00 00 00 00 00 | 00 00 00 00 00 00 00 00 |........|........| |000001e0| 00 00 00 00 00 00 00 00 | 00 00 00 00 00 00 00 00 |........|........| |000001f0| 00 00 00 00 00 00 00 00 | 00 00 00 00 00 00 00 00 |........|........| |00000200| 00 00 00 00 00 00 00 00 | 00 00 00 00 00 00 00 00 |........|........| |00000210| 00 00 00 00 00 00 00 00 | 00 00 00 00 00 00 00 00 |........|........| |00000220| 00 00 00 00 00 00 00 00 | 00 00 00 00 00 00 00 00 |........|........| |00000230| 00 00 00 00 00 00 00 00 | 00 00 00 00 00 00 00 00 |........|........| |00000240| 00 00 00 00 00 00 00 00 | 00 00 00 00 00 00 00 00 |........|........| |00000250| 00 00 00 00 00 00 00 00 | 00 00 00 00 00 00 00 00 |........|........| |00000260| 00 00 00 00 00 00 00 00 | 00 00 00 00 00 00 00 00 |........|........| |00000270| 00 00 00 00 00 00 00 00 | 00 00 00 00 00 00 00 00 |........|........| |00000280| 00 00 00 6b 00 05 00 03 | 06 47 65 6e 65 76 61 00 |...k....|.Geneva.| |00000290| 00 10 08 50 61 6c 61 74 | 69 6e 6f 0e 50 61 6c 61 |...Palat|ino.Pala| |000002a0| 74 69 6e 6f 2d 52 6f 6d | 61 6e 00 15 09 48 65 6c |tino-Rom|an...Hel| |000002b0| 76 65 74 69 63 61 09 48 | 65 6c 76 65 74 69 63 61 |vetica.H|elvetica| |000002c0| 00 0d 0d 5a 61 70 66 20 | 44 69 6e 67 62 61 74 73 |...Zapf |Dingbats| |000002d0| 0c 5a 61 70 66 44 69 6e | 67 62 61 74 73 00 16 07 |.ZapfDin|gbats...| |000002e0| 43 6f 75 72 69 65 72 07 | 43 6f 75 72 69 65 72 00 |Courier.|Courier.| |000002f0| 00 00 00 00 01 0b 50 61 | 6c 61 74 69 6e 6f 20 31 |......Pa|latino 1| |00000300| 34 00 00 00 00 00 00 00 | 00 00 00 00 00 00 00 00 |4.......|........| |00000310| 00 00 00 00 00 00 00 00 | 10 00 38 00 01 01 00 00 |........|..8.....| |00000320| 00 00 96 00 02 00 03 00 | 30 00 00 01 64 00 02 00 |........|0...d...| |00000330| 10 00 24 00 20 01 64 00 | 02 00 15 00 28 00 00 01 |..$. .d.|....(...| |00000340| 64 00 44 00 10 00 28 00 | 00 01 64 00 01 00 15 00 |d.D...(.|..d.....| |00000350| 24 00 20 01 64 00 1a 00 | 0d 00 28 00 00 01 64 00 |$. .d...|..(...d.| |00000360| 02 00 10 00 20 00 20 01 | 64 00 07 00 10 00 28 00 |.... . .|d.....(.| |00000370| 02 01 64 00 0c 00 10 00 | 28 00 01 01 64 00 00 06 |..d.....|(...d...| |00000380| 03 20 4d 61 6e 64 61 74 | 6f 72 79 20 62 75 7a 7a |. Mandat|ory buzz| |00000390| 77 6f 72 64 20 61 73 20 | 72 65 71 75 69 72 65 64 |word as |required| |000003a0| 20 66 6f 72 20 61 6c 6c | 20 64 6f 63 75 6d 65 6e | for all| documen| |000003b0| 74 73 20 70 75 72 70 6f | 72 74 69 6e 67 20 74 6f |ts purpo|rting to| |000003c0| 20 68 61 76 65 20 61 20 | 75 73 65 66 75 6c 20 61 | have a |useful a| |000003d0| 6e 64 2f 6f 72 20 73 63 | 68 6f 6c 61 72 6c 79 20 |nd/or sc|holarly | |000003e0| 62 65 6e 74 2e 00 00 00 | 00 00 00 00 00 00 00 00 |bent....|........| |000003f0| 00 00 00 00 00 00 00 00 | 00 00 00 00 00 00 00 00 |........|........| |00000400| 00 00 00 00 00 00 00 00 | 00 00 00 00 00 00 00 00 |........|........| |00000410| 00 00 00 00 00 00 00 00 | 00 00 00 00 00 00 00 00 |........|........| |00000420| 00 00 00 00 00 00 00 00 | 00 00 00 00 00 00 00 00 |........|........| |00000430| 00 00 00 00 00 00 00 00 | 00 00 00 00 00 00 00 00 |........|........| |00000440| 00 00 00 00 00 00 00 00 | 00 00 00 00 00 00 00 00 |........|........| |00000450| 00 00 00 00 00 00 00 00 | 00 00 00 00 00 00 00 00 |........|........| |00000460| 00 00 00 00 00 00 00 00 | 00 00 00 00 00 00 00 00 |........|........| |00000470| 00 00 00 00 00 00 00 00 | 00 00 00 00 00 00 00 00 |........|........| |00000480| 00 00 00 65 00 00 00 04 | 00 04 00 65 00 00 00 12 |...e....|...e....| |00000490| 00 01 00 00 00 01 00 02 | 00 00 00 01 00 03 00 00 |........|........| |000004a0| 00 63 00 00 00 06 00 01 | 00 00 00 65 00 00 00 08 |.c......|...e....| |000004b0| 03 00 00 00 00 00 00 00 | 61 72 09 2a 63 63 6f 6e |........|ar.*ccon| |000004c0| 63 61 74 28 63 68 61 72 | 20 2a 73 2c 20 63 68 61 |cat(char| *s, cha| |000004d0| 72 20 2a 74 29 3b 0d 76 | 6f 69 64 09 50 43 6f 6e |r *t);.v|oid.PCon| |000004e0| 63 61 74 28 63 68 61 72 | 20 2a 73 2c 20 63 68 61 |cat(char| *s, cha| |000004f0| 72 20 2a 74 29 3b 0d 0d | 23 64 65 66 69 6e 65 09 |r *t);..|#define.| |00000500| 6b 4c 69 6d 69 74 09 31 | 30 30 30 0d 69 6e 74 20 |kLimit.1|000.int | |00000510| 6d 61 69 6e 28 29 0d 7b | 0d 09 53 74 72 32 35 35 |main().{|..Str255| |00000520| 09 74 65 73 74 31 2c 20 | 74 65 73 74 32 2c 20 74 |.test1, |test2, t| |00000530| 65 73 74 33 2c 20 74 65 | 73 74 34 3b 0d 09 6c 6f |est3, te|st4;..lo| |00000540| 6e 67 09 73 74 61 72 74 | 54 69 63 6b 42 6c 6f 63 |ng.start|TickBloc| |00000550| 6b 2c 20 65 6e 64 54 69 | 63 6b 42 6c 6f 63 6b 2c |k, endTi|ckBlock,| |00000560| 20 73 74 61 72 74 54 69 | 63 6b 51 75 69 63 6b 2c | startTi|ckQuick,| |00000570| 20 65 6e 64 54 69 63 6b | 51 75 69 63 6b 3b 00 00 | endTick|Quick;..| |00000580| 02 00 16 00 28 00 00 01 | 64 00 10 00 10 00 38 00 |....(...|d.....8.| |00000590| 01 01 64 00 01 00 10 00 | 48 00 01 01 64 00 01 00 |..d.....|H...d...| |000005a0| 10 00 30 00 01 01 64 00 | 01 00 10 00 30 00 00 01 |..0...d.|....0...| |000005b0| 64 00 01 00 10 00 30 00 | 02 01 64 00 00 07 e4 00 |d.....0.|..d.....| |000005c0| 02 00 00 00 00 00 00 00 | 00 00 00 00 00 00 00 00 |........|........| |000005d0| 00 00 00 00 00 00 00 00 | 00 00 00 00 00 ff ff ff |........|........| |000005e0| ff 00 00 00 00 00 00 00 | 00 00 20 ff ff ff ff 2e |........|.. .....| |000005f0| 00 00 20 ff ff ff ff 2e | 00 00 20 ff ff ff ff 2e |.. .....|.. .....| |00000600| 00 00 20 ff ff ff ff 2e | 00 00 20 ff ff ff ff 2e |.. .....|.. .....| |00000610| 00 00 20 ff ff ff ff 2e | 00 00 20 ff ff ff ff 2e |.. .....|.. .....| |00000620| 00 00 20 ff ff ff ff 2e | 00 00 20 ff ff ff ff 2e |.. .....|.. .....| |00000630| 00 00 20 ff ff ff ff 2e | 00 00 20 ff ff ff ff 2e |.. .....|.. .....| |00000640| 00 00 20 ff ff ff ff 2e | 00 00 20 ff ff ff ff 2e |.. .....|.. .....| |00000650| 00 00 20 ff ff ff ff 2e | 00 00 20 ff ff ff ff 2e |.. .....|.. .....| |00000660| 00 00 20 ff ff ff ff 2e | 00 00 20 ff ff ff ff 2e |.. .....|.. .....| |00000670| 00 00 20 ff ff ff ff 2e | 00 00 20 ff ff ff ff f9 |.. .....|.. .....| |00000680| 00 02 ff 2e 00 00 20 ff | ff ff ff 2e 00 00 02 00 |...... .|........| |00000690| 00 00 00 00 00 00 00 00 | 00 00 00 00 00 00 00 00 |........|........| |000006a0| 00 00 00 00 00 00 00 00 | 00 00 00 ff ff ff ff 00 |........|........| |000006b0| 00 00 00 00 00 00 00 00 | 90 ff ff ff ff 03 a4 00 |........|........| |000006c0| 90 c0 02 00 00 03 ae 00 | 36 d2 04 00 00 47 60 00 |........|6....G`.| |000006d0| 00 86 50 00 02 20 14 00 | 02 2a 94 43 4f 44 45 07 |..P.. ..|.*.CODE.| |000006e0| 07 00 0a 07 07 00 28 07 | 07 03 ae 00 00 00 0e 00 |......(.|........| |000006f0| 00 61 b2 ff d3 1a c0 00 | 29 06 10 00 36 f3 a4 00 |.a......|)...6...| |00000700| 36 d2 36 00 02 29 72 00 | 02 29 82 00 90 4e 2a 00 |6.6..)r.|.)...N*.| |00000710| 36 d2 04 00 2b 6a 10 00 | 2c 49 b0 00 05 d5 94 00 |6...+j..|,I......| |00000720| 00 02 c2 44 45 20 00 00 | 91 47 f6 00 00 37 e6 00 |...DE ..|.G...7..| |00000730| 90 88 98 00 90 4e 2a 00 | 2b 6a 10 00 08 79 0c 00 |.....N*.|+j...y..| |00000740| 00 00 e0 00 00 37 e6 00 | 2c e8 1e 00 29 04 dc 00 |.....7..|,...)...| |00000750| 91 43 bc 00 00 00 36 00 | 19 00 00 00 00 00 1a 80 |.C....6.|........| |00000760| 00 ff ee 00 01 00 09 00 | 00 00 00 00 00 00 00 00 |........|........| |00000770| 00 00 00 80 00 ff ff ff | ff 00 00 00 00 ff ff ff |........|........| |00000780| ff 00 90 ff ff ff ff 03 | a4 00 90 c0 02 00 00 03 |........|........| |00000790| ae 00 36 d2 04 00 00 47 | 60 00 00 86 50 00 02 20 |..6....G|`...P.. | |000007a0| 14 00 02 2a 94 43 4f 44 | 45 07 07 00 0a 07 07 00 |...*.COD|E.......| |000007b0| 28 07 07 03 ae 00 00 00 | 0e 00 00 61 b2 ff d3 1a |(.......|...a....| |000007c0| c0 00 29 06 10 00 36 f3 | a4 00 36 d2 36 00 02 29 |..)...6.|..6.6..)| |000007d0| 72 00 02 29 82 00 90 4e | 2a 00 36 d2 04 00 2b 6a |r..)...N|*.6...+j| |000007e0| 10 00 2c 49 b0 00 05 d5 | 94 00 00 02 c2 44 45 20 |..,I....|.....DE | |000007f0| 00 00 91 47 f6 00 00 37 | e6 00 90 88 98 00 90 4e |...G...7|.......N| |00000800| 2a 00 2b 6a 10 00 08 79 | 0c 00 00 00 e0 00 00 37 |*.+j...y|.......7| |00000810| e6 00 2c e8 1e 00 29 04 | dc 00 91 43 bc 00 00 00 |..,...).|...C....| |00000820| 36 00 53 00 00 00 00 00 | 00 00 00 00 12 00 00 00 |6.S.....|........| |00000830| 00 00 00 00 00 00 00 00 | 00 00 00 00 01 00 00 ff |........|........| |00000840| ff ff ff 00 00 00 00 ff | ff ff ff 00 90 ff ff ff |........|........| |00000850| ff 03 a4 00 90 c0 02 00 | 00 03 ae 00 36 d2 04 00 |........|....6...| |00000860| 00 47 60 00 00 86 50 00 | 02 20 14 00 02 2a 94 43 |.G`...P.|. ...*.C| |00000870| 4f 44 45 07 07 00 0a 07 | 07 00 28 07 07 03 00 0b |ODE.....|..(.....| |00000880| 68 61 6e 20 6f 6c 64 65 | 72 20 63 6f 64 69 6e 67 |han olde|r coding| |00000890| 20 73 74 79 6c 65 73 2e | 20 28 4f 66 20 63 6f 75 | styles.| (Of cou| |000008a0| 72 73 65 20 69 74 20 68 | 61 73 20 61 6c 77 61 79 |rse it h|as alway| |000008b0| 73 20 62 65 65 6e 20 70 | 6f 73 73 69 62 6c 65 20 |s been p|ossible | |000008c0| 74 6f 20 6a 75 73 74 20 | 77 72 69 74 65 20 62 61 |to just |write ba| |000008d0| 64 20 63 6f 64 65 2c 20 | 72 65 67 61 72 64 6c 65 |d code, |regardle| |000008e0| 73 73 20 6f 66 20 74 68 | 65 20 70 72 6f 67 72 61 |ss of th|e progra| |000008f0| 6d 6d 69 6e 67 20 6c 61 | 6e 67 75 61 67 65 20 75 |mming la|nguage u| |00000900| 73 65 64 2e 29 20 54 68 | 65 72 65 20 69 73 20 61 |sed.) Th|ere is a| |00000910| 6c 73 6f 20 61 20 64 69 | 73 74 69 6e 63 74 20 74 |lso a di|stinct t| |00000920| 65 6e 64 65 6e 63 79 20 | 66 6f 72 20 64 65 76 65 |endency |for deve| |00000930| 6c 6f 70 65 72 73 20 74 | 6f 20 77 72 69 74 65 20 |lopers t|o write | |00000940| 63 6f 64 65 20 77 68 69 | 63 68 20 70 65 72 66 6f |code whi|ch perfo| |00000950| 72 6d 73 20 61 63 63 65 | 70 74 61 62 6c 79 20 6f |rms acce|ptably o| |00000960| 6e 20 68 69 67 68 65 72 | 20 65 6e 64 20 73 79 73 |n higher| end sys| |00000970| 74 65 6d 73 2c 20 62 75 | 74 20 68 61 73 20 73 6c |tems, bu|t has sl| |00000980| 75 67 67 69 73 68 20 70 | 65 72 66 6f 72 6d 61 6e |uggish p|erforman| |00000990| 63 65 20 6f 6e 20 6c 6f | 77 20 65 6e 64 20 6d 61 |ce on lo|w end ma| |000009a0| 63 68 69 6e 65 73 2e 20 | 54 68 69 73 20 63 61 6e |chines. |This can| |000009b0| 20 62 65 20 73 65 65 6e | 20 69 6e 20 73 6f 6d 65 | be seen| in some| |000009c0| 20 73 6f 66 74 77 61 72 | 65 20 77 68 65 72 65 20 | softwar|e where | |000009d0| 69 74 20 74 61 6b 65 73 | 20 61 20 6e 6f 74 69 63 |it takes| a notic| |000009e0| 65 61 62 6c 65 20 6c 65 | 6e 67 74 68 20 6f 66 20 |eable le|ngth of | |000009f0| 74 69 6d 65 20 66 6f 72 | 20 61 20 6d 65 6e 75 20 |time for| a menu | |00000a00| 74 6f 20 64 72 6f 70 20 | 6f 72 20 70 6f 70 2d 75 |to drop |or pop-u| |00000a10| 70 2c 20 6f 72 20 66 6f | 72 20 73 63 72 6f 6c 6c |p, or fo|r scroll| |00000a20| 69 6e 67 20 74 6f 20 73 | 74 61 72 74 20 6f 6e 63 |ing to s|tart onc| |00000a30| 65 20 74 68 65 20 6d 6f | 75 73 65 20 62 75 74 74 |e the mo|use butt| |00000a40| 6f 6e 20 68 61 73 20 62 | 65 65 6e 20 68 65 6c 64 |on has b|een held| |00000a50| 20 64 6f 77 6e 2e 0d 41 | 6c 6f 6e 67 20 73 69 64 | down..A|long sid| |00000a60| 65 20 74 68 65 73 65 20 | 6e 65 77 20 70 61 72 61 |e these |new para| |00000a70| 64 69 67 6d 73 2c 20 6e | 65 77 65 72 2c 20 6d 6f |digms, n|ewer, mo| |00000a80| ae 00 00 00 0e 00 00 61 | b2 ff d3 1a c0 00 29 06 |.......a|......).| |00000a90| 10 00 36 f3 a4 00 36 d2 | 36 00 02 29 72 00 02 29 |..6...6.|6..)r..)| |00000aa0| 82 00 90 4e 2a 00 36 d2 | 04 00 2b 6a 10 00 2c 49 |...N*.6.|..+j..,I| |00000ab0| b0 00 05 d5 94 00 00 02 | c2 44 45 20 00 00 91 47 |........|.DE ...G| |00000ac0| f6 00 00 37 e6 00 90 88 | 98 00 90 4e 2a 00 2b 6a |...7....|...N*.+j| |00000ad0| 10 00 08 79 0c 00 00 00 | e0 00 00 37 e6 00 2c e8 |...y....|...7..,.| |00000ae0| 1e 00 29 04 dc 00 91 43 | bc 00 00 00 36 00 0d 00 |..)....C|....6...| |00000af0| 00 00 00 00 00 00 00 00 | 12 00 00 00 00 00 00 00 |........|........| |00000b00| 00 00 00 00 00 80 00 00 | 01 00 00 ff ff ff ff ff |........|........| |00000b10| ff ff ff ff ff ff ff 00 | 90 ff ff ff ff 03 a4 00 |........|........| |00000b20| 90 c0 02 00 00 03 ae 00 | 36 d2 04 00 00 47 60 00 |........|6....G`.| |00000b30| 00 86 50 00 02 20 14 00 | 02 2a 94 43 4f 44 45 07 |..P.. ..|.*.CODE.| |00000b40| 07 00 0a 07 07 00 28 07 | 07 03 ae 00 00 00 0e 00 |......(.|........| |00000b50| 00 61 b2 ff d3 1a c0 00 | 29 06 10 00 36 f3 a4 00 |.a......|)...6...| |00000b60| 36 d2 36 00 02 29 72 00 | 02 29 82 00 90 4e 2a 00 |6.6..)r.|.)...N*.| |00000b70| 36 d2 04 00 2b 6a 10 00 | 2c 49 b0 00 05 d5 ff f2 |6...+j..|,I......| |00000b80| 61 6e 64 2f 6f 72 20 66 | 61 73 74 65 72 20 73 69 |and/or f|aster si| |00000b90| 6e 63 65 20 69 74 20 63 | 61 6e 20 6f 70 74 69 6d |nce it c|an optim| |00000ba0| 69 7a 65 2e 20 49 6e 20 | 72 65 61 6c 69 74 79 2c |ize. In |reality,| |00000bb0| 20 6e 6f 20 63 6f 6d 70 | 69 6c 65 72 20 63 61 6e | no comp|iler can| |00000bc0| 20 66 69 6e 65 20 74 75 | 6e 65 20 6f 62 6a 65 63 | fine tu|ne objec| |00000bd0| 74 20 63 6f 64 65 20 74 | 6f 20 74 68 65 20 73 61 |t code t|o the sa| |00000be0| 6d 65 20 65 66 66 69 63 | 69 65 6e 63 79 20 61 73 |me effic|iency as| |00000bf0| 20 61 20 63 6f 6d 70 65 | 74 65 6e 74 20 68 75 6d | a compe|tent hum| |00000c00| 61 6e 20 77 6f 72 6b 69 | 6e 67 20 69 6e 20 61 73 |an worki|ng in as| |00000c10| 73 65 6d 62 6c 79 20 6c | 61 6e 67 75 61 67 65 2e |sembly l|anguage.| |00000c20| 20 53 69 6e 63 65 20 69 | 74 20 69 73 20 69 6d 70 | Since i|t is imp| |00000c30| 72 61 63 74 69 63 61 6c | 20 74 6f 20 63 6f 64 65 |ractical| to code| |00000c40| 20 6c 61 72 67 65 20 61 | 70 70 6c 69 63 61 74 69 | large a|pplicati| |00000c50| 6f 6e 73 20 69 6e 20 61 | 73 73 65 6d 62 6c 79 20 |ons in a|ssembly | |00000c60| 6c 61 6e 67 75 61 67 65 | 2c 20 6d 6f 73 74 20 70 |language|, most p| |00000c70| 72 6f 67 72 61 6d 6d 65 | 72 73 20 61 63 63 65 70 |rogramme|rs accep| |00000c80| 74 20 74 68 65 20 70 65 | 72 66 6f 72 6d 61 6e 63 |t the pe|rformanc| |00000c90| 65 20 68 69 74 20 74 68 | 65 79 20 74 61 6b 65 20 |e hit th|ey take | |00000ca0| 61 6e 64 20 68 6f 70 65 | 20 6e 6f 62 6f 64 79 20 |and hope| nobody | |00000cb0| 77 69 6c 6c 20 6e 6f 74 | 69 63 65 2e 0d 54 68 65 |will not|ice..The| |00000cc0| 72 65 20 69 73 20 61 20 | 6d 69 64 64 6c 65 20 67 |re is a |middle g| |00000cd0| 72 6f 75 6e 64 20 62 65 | 74 77 65 65 6e 20 68 6f |round be|tween ho| |00000ce0| 70 69 6e 67 20 74 68 65 | 20 63 6f 6d 70 69 6c 65 |ping the| compile| |00000cf0| 72 20 63 61 6e 20 6d 61 | 6b 65 20 74 68 65 20 63 |r can ma|ke the c| |00000d00| 6f 64 65 20 62 65 74 74 | 65 72 20 61 6e 64 20 77 |ode bett|er and w| |00000d10| 72 69 74 69 6e 67 20 69 | 6e 20 61 73 73 65 6d 62 |riting i|n assemb| |00000d20| 6c 79 20 6c 61 6e 67 75 | 61 67 65 2e 20 54 68 61 |ly langu|age. Tha| |00000d30| 74 20 61 6c 74 65 72 6e | 61 74 69 76 65 20 69 73 |t altern|ative is| |00000d40| 20 73 6f 75 72 63 65 20 | 63 6f 64 65 20 6f 70 74 | source |code opt| |00000d50| 69 6d 69 7a 61 74 69 6f | 6e 2e 20 49 74 20 64 6f |imizatio|n. It do| |00000d60| 65 73 20 72 65 71 75 69 | 72 65 73 20 73 6f 6d 65 |es requi|res some| |00000d70| 20 6b 6e 6f 77 6c 65 64 | 67 65 20 6f 66 20 61 73 | knowled|ge of as| |00000d80| 00 02 94 00 00 02 c2 44 | 45 20 00 00 91 47 f6 00 |.......D|E ...G..| |00000d90| 00 37 e6 00 90 88 98 00 | 90 4e 2a 00 2b 6a 10 00 |.7......|.N*.+j..| |00000da0| 08 79 0c 00 00 00 e0 00 | 00 37 e6 00 2c e8 1e 00 |.y......|.7..,...| |00000db0| 29 04 dc 00 91 43 bc 00 | 00 00 36 00 09 00 00 00 |)....C..|..6.....| |00000dc0| 00 00 00 00 00 00 00 00 | 00 00 00 00 00 00 00 00 |........|........| |00000dd0| 00 00 00 00 00 00 01 00 | 00 ff ff ff ff 00 00 00 |........|........| |00000de0| 00 ff ff ff ff 00 90 ff | ff ff ff 03 a4 00 90 c0 |........|........| |00000df0| 02 00 00 03 ae 00 36 d2 | 04 00 00 47 60 00 00 86 |......6.|...G`...| |00000e00| 50 00 02 20 14 00 02 2a | 94 43 4f 44 45 07 07 00 |P.. ...*|.CODE...| |00000e10| 0a 07 07 00 28 07 07 03 | ae 00 00 00 0e 00 00 61 |....(...|.......a| |00000e20| b2 ff d3 1a c0 00 29 06 | 10 00 36 f3 a4 00 36 d2 |......).|..6...6.| |00000e30| 36 00 02 29 72 00 02 29 | 82 00 90 4e 2a 00 36 d2 |6..)r..)|...N*.6.| |00000e40| 04 00 2b 6a 10 00 2c 49 | b0 00 05 d5 94 00 00 02 |..+j..,I|........| |00000e50| c2 44 45 20 00 00 91 47 | f6 00 00 37 e6 00 90 88 |.DE ...G|...7....| |00000e60| 98 00 90 4e 2a 00 2b 6a | 10 00 08 79 0c 00 00 00 |...N*.+j|...y....| |00000e70| e0 00 00 37 e6 00 2c e8 | 1e 00 29 04 dc 00 91 43 |...7..,.|..)....C| |00000e80| bc 00 00 00 36 00 01 00 | 02 00 00 00 00 00 00 00 |....6...|........| |00000e90| 00 00 00 00 00 00 00 00 | 00 00 00 00 00 00 00 00 |........|........| |00000ea0| 00 00 00 ff ff ff ff 00 | 00 00 00 00 00 00 00 02 |........|........| |00000eb0| 20 01 8c 00 00 2e 2b 02 | 20 ff ff ff ff 2e 2b 00 | .....+.| .....+.| |00000ec0| 20 ff ff ff ff 2e 00 00 | 20 ff ff ff ff 2e 00 00 | .......| .......| |00000ed0| 20 ff ff ff ff 2e 00 00 | 20 ff ff ff ff 2e 00 00 | .......| .......| |00000ee0| 20 ff ff ff ff 2e 00 00 | 20 ff ff ff ff 2e 00 00 | .......| .......| |00000ef0| 20 ff ff ff ff 2e 00 00 | 20 ff ff ff ff 2e 00 00 | .......| .......| |00000f00| 20 ff ff ff ff 2e 00 00 | 20 ff ff ff ff 2e 00 00 | .......| .......| |00000f10| 20 ff ff ff ff 2e 00 00 | 20 ff ff ff ff 2e 00 00 | .......| .......| |00000f20| 20 ff ff ff ff 2e 00 00 | 20 ff ff ff ff 2e 00 00 | .......| .......| |00000f30| 20 ff ff ff ff 2e 00 00 | 20 ff ff ff ff 2e 00 00 | .......| .......| |00000f40| 20 ff ff ff ff 2e 00 00 | 20 ff ff ff ff 2e 00 00 | .......| .......| |00000f50| 02 00 01 00 00 00 00 00 | 00 00 00 00 00 00 00 00 |........|........| |00000f60| 00 00 00 00 00 00 00 00 | 00 00 01 00 00 ff ff ff |........|........| |00000f70| ff 00 00 00 00 ff ff ff | ff 00 90 ff ff ff ff ef |........|........| |00000f80| 6f 20 77 61 79 73 20 74 | 6f 20 64 65 74 65 72 6d |o ways t|o determ| |00000f90| 69 6e 65 20 77 68 65 72 | 65 20 6f 70 74 69 6d 69 |ine wher|e optimi| |00000fa0| 7a 61 74 69 6f 6e 20 6e | 65 65 64 73 20 74 6f 20 |zation n|eeds to | |00000fb0| 62 65 20 64 6f 6e 65 3b | 20 62 79 20 70 72 6f 66 |be done;| by prof| |00000fc0| 69 6c 69 6e 67 20 74 68 | 65 20 65 78 65 63 75 74 |iling th|e execut| |00000fd0| 69 6e 67 20 63 6f 64 65 | 20 61 6e 64 20 62 79 20 |ing code| and by | |00000fe0| 61 63 74 75 61 6c 6c 79 | 20 75 73 69 6e 67 20 74 |actually| using t| |00000ff0| 68 65 20 63 6f 64 65 2e | 20 55 6e 74 69 6c 20 79 |he code.| Until y| |00001000| 6f 75 20 6b 6e 6f 77 6e | 20 77 68 65 72 65 20 63 |ou known| where c| |00001010| 6f 64 65 20 69 73 20 61 | 63 74 75 61 6c 6c 79 20 |ode is a|ctually | |00001020| 73 6c 6f 77 2c 20 74 68 | 65 72 65 20 69 73 20 6e |slow, th|ere is n| |00001030| 6f 20 77 61 79 20 74 6f | 20 69 6d 70 72 6f 76 65 |o way to| improve| |00001040| 20 70 65 72 66 6f 72 6d | 61 6e 63 65 2e 20 59 6f | perform|ance. Yo| |00001050| 75 20 6d 61 79 20 6f 70 | 74 69 6d 69 7a 65 20 61 |u may op|timize a| |00001060| 20 73 69 6e 67 6c 65 20 | 72 6f 75 74 69 6e 65 20 | single |routine | |00001070| 77 68 69 63 68 20 79 6f | 75 20 62 65 6c 69 65 76 |which yo|u believ| |00001080| 00 02 ff 03 a4 00 90 c0 | 02 00 00 03 ae 00 36 d2 |........|......6.| |00001090| 04 00 00 47 60 00 00 86 | 50 00 02 20 14 00 02 2a |...G`...|P.. ...*| |000010a0| 94 43 4f 44 45 07 07 00 | 0a 07 07 00 28 07 07 03 |.CODE...|....(...| |000010b0| ae 00 00 00 0e 00 00 61 | b2 ff d3 1a c0 00 29 06 |.......a|......).| |000010c0| 10 00 36 f3 a4 00 36 d2 | 36 00 02 29 72 00 02 29 |..6...6.|6..)r..)| |000010d0| 82 00 90 4e 2a 00 36 d2 | 04 00 2b 6a 10 00 2c 49 |...N*.6.|..+j..,I| |000010e0| b0 00 05 d5 94 00 00 02 | c2 44 45 20 00 00 91 47 |........|.DE ...G| |000010f0| f6 00 00 37 e6 00 90 88 | 98 00 90 4e 2a 00 2b 6a |...7....|...N*.+j| |00001100| 10 00 08 79 0c 00 00 00 | e0 00 00 37 e6 00 2c e8 |...y....|...7..,.| |00001110| 1e 00 29 04 dc 00 91 43 | bc 00 00 00 36 00 01 00 |..)....C|....6...| |00001120| 00 00 00 00 00 00 00 00 | 00 00 00 00 00 00 00 00 |........|........| |00001130| 00 00 00 00 00 00 00 00 | 00 00 00 ff ff ff ff 00 |........|........| |00001140| 00 00 00 00 00 00 00 00 | 20 00 6c 00 00 2e 44 02 |........| .l...D.| |00001150| 20 ff ff ff ff 2e 2b 00 | 20 ff ff ff ff 2e 00 00 | .....+.| .......| |00001160| 20 ff ff ff ff 2e 00 00 | 20 ff ff ff ff 2e 00 00 | .......| .......| |00001170| 20 ff ff ff ff 2e 00 00 | 20 ff ff ff ff 2e 00 00 | .......| .......| |00001180| 20 ff ff ff ff 2e 00 00 | 20 ff ff ff ff 2e 00 00 | .......| .......| |00001190| 20 ff ff ff ff 2e 00 00 | 20 ff ff ff ff 2e 00 00 | .......| .......| |000011a0| 20 ff ff ff ff 2e 00 00 | 20 ff ff ff ff 2e 00 00 | .......| .......| |000011b0| 20 ff ff ff ff 2e 00 00 | 20 ff ff ff ff 2e 00 00 | .......| .......| |000011c0| 20 ff ff ff ff 2e 00 00 | 20 ff ff ff ff 2e 00 00 | .......| .......| |000011d0| 20 ff ff ff ff 2e 00 00 | 20 ff ff ff ff 2e 00 00 | .......| .......| |000011e0| 20 ff ff ff ff 2e 00 00 | 01 00 03 00 00 00 00 00 | .......|........| |000011f0| 00 00 12 00 00 00 00 00 | 00 00 00 00 00 00 00 00 |........|........| |00001200| 00 00 01 00 00 ff ff ff | ff 00 00 00 00 ff ff ff |........|........| |00001210| ff 00 90 ff ff ff ff 03 | a4 00 90 c0 02 00 00 03 |........|........| |00001220| ae 00 36 d2 04 00 00 47 | 60 00 00 86 50 00 02 20 |..6....G|`...P.. | |00001230| 14 00 02 2a 94 43 4f 44 | 45 07 07 00 0a 07 07 00 |...*.COD|E.......| |00001240| 28 07 07 03 ae 00 00 00 | 0e 00 00 61 b2 ff d3 1a |(.......|...a....| |00001250| c0 00 29 06 10 00 36 f3 | a4 00 36 d2 36 00 02 29 |..)...6.|..6.6..)| |00001260| 72 00 02 29 82 00 90 4e | 2a 00 36 d2 04 00 2b 6a |r..)...N|*.6...+j| |00001270| 10 00 2c 49 b0 00 05 d5 | 94 00 00 02 c2 44 00 16 |..,I....|.....D..| |00001280| 20 6f 77 6e 20 70 72 6f | 66 69 6c 69 6e 67 20 6c | own pro|filing l| |00001290| 69 62 72 61 72 69 65 73 | 2e 20 54 68 65 20 70 72 |ibraries|. 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Pr| |00001520| 6f 66 69 6c 65 72 73 20 | 61 72 65 20 75 73 75 61 |ofilers |are usua| |00001530| 6c 6c 79 20 6e 6f 74 20 | 68 69 65 72 61 72 63 68 |lly not |hierarch| |00001540| 69 63 61 6c 2c 20 73 6f | 20 63 68 69 6c 64 20 66 |ical, so| child f| |00001550| 75 6e 63 74 69 6f 6e 20 | 74 69 6d 65 20 69 73 20 |unction |time is | |00001560| 6e 6f 74 20 64 65 74 65 | 72 6d 69 6e 65 64 2e 20 |not dete|rmined. | |00001570| 20 54 68 65 20 74 68 69 | 72 64 20 6d 61 69 6e 20 | The thi|rd main | |00001580| 45 20 00 00 91 47 f6 00 | 00 37 e6 00 90 88 98 00 |E ...G..|.7......| |00001590| 90 4e 2a 00 2b 6a 10 00 | 08 79 0c 00 00 00 e0 00 |.N*.+j..|.y......| |000015a0| 00 37 e6 00 2c e8 1e 00 | 29 04 dc 00 91 43 bc 00 |.7..,...|)....C..| |000015b0| 00 00 36 00 00 00 00 00 | 01 ff 36 00 00 00 01 fd |..6.....|..6.....| |000015c0| 00 08 00 00 00 00 00 00 | 00 00 00 00 00 00 00 00 |........|........| |000015d0| 00 80 32 62 94 00 00 00 | 00 00 00 00 48 00 48 02 |..2b....|....H.H.| |000015e0| b8 02 42 80 00 80 00 80 | 00 80 00 00 00 00 00 80 |..B.....|........| |000015f0| 32 62 94 00 00 00 00 00 | 27 37 34 02 00 00 36 00 |2b......|'74...6.| |00001600| 00 00 00 00 00 00 00 00 | 00 ff 00 00 00 00 00 00 |........|........| |00001610| 00 00 00 00 00 00 00 00 | 00 00 03 00 a0 67 3e b8 |........|.....g>.| |00001620| 02 20 34 1f 4c df 00 03 | 00 00 00 00 00 00 00 00 |. 4.L...|........| |00001630| 00 00 00 00 00 8c 02 b8 | 00 48 02 d2 02 42 80 00 |........|.H...B..| |00001640| 80 00 80 00 80 00 00 00 | 00 00 00 00 00 00 00 00 |........|........| |00001650| 00 00 00 27 37 1c 01 81 | 00 0c 00 00 00 00 00 00 |...'7...|........| |00001660| 00 00 00 00 ff 00 00 00 | 02 00 00 00 00 00 02 ff |........|........| |00001670| 36 00 00 00 01 fd 00 08 | 40 00 00 00 00 00 00 9e |6.......|@.......| |00001680| 76 65 6e 74 20 6c 6f 6f | 70 20 61 73 20 75 73 69 |vent loo|p as usi| |00001690| 6e 67 20 39 30 2b 25 20 | 6f 66 20 74 68 65 20 43 |ng 90+% |of the C| |000016a0| 50 55 20 74 69 6d 65 20 | 6f 66 20 74 68 65 20 70 |PU time |of the p| |000016b0| 72 6f 67 72 61 6d 20 69 | 66 20 74 68 65 20 70 72 |rogram i|f the pr| |000016c0| 6f 66 69 6c 65 72 20 72 | 75 6e 73 20 66 6f 72 20 |ofiler r|uns for | |000016d0| 61 6e 79 20 72 65 61 6c | 20 6c 65 6e 67 74 68 20 |any real| length | |000016e0| 6f 66 20 74 69 6d 65 2e | 0d 54 68 65 20 73 65 63 |of time.|.The sec| |000016f0| 6f 6e 64 20 6d 65 74 68 | 6f 64 20 69 73 20 74 6f |ond meth|od is to| |00001700| 20 61 63 74 75 61 6c 6c | 79 20 75 73 65 20 74 68 | actuall|y use th| |00001710| 65 20 73 6f 75 72 63 65 | 20 63 6f 64 65 20 62 65 |e source| code be| |00001720| 69 6e 67 20 65 78 61 6d | 69 6e 65 64 20 6f 6e 20 |ing exam|ined on | |00001730| 61 20 73 6c 6f 77 20 6d | 61 63 68 69 6e 65 2e 20 |a slow m|achine. | |00001740| 54 68 65 20 74 77 6f 20 | 62 65 73 74 20 6d 61 63 |The two |best mac| |00001750| 68 69 6e 65 73 20 74 6f | 20 74 65 73 74 20 63 6f |hines to| test co| |00001760| 64 65 20 6f 6e 20 61 72 | 65 20 74 68 65 20 4d 61 |de on ar|e the Ma| |00001770| 63 69 6e 74 6f 73 68 20 | 43 6c 61 73 73 69 63 20 |cintosh |Classic | |00001780| 28 6f 72 20 50 6c 75 73 | 29 20 61 6e 64 20 74 68 |(or Plus|) and th| |00001790| 65 20 4c 43 2e 20 54 68 | 65 20 43 6c 61 73 73 69 |e LC. 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The| |00002340| 72 65 20 61 72 65 20 61 | 6c 73 6f 20 73 6f 6d 65 |re are a|lso some| |00002350| 20 74 69 70 73 20 66 6f | 72 20 50 61 73 61 6c 20 | tips fo|r Pasal | |00002360| 70 72 6f 67 72 61 6d 6d | 65 72 73 2e 20 54 68 65 |programm|ers. The| |00002370| 20 64 65 76 65 6c 6f 70 | 6d 65 6e 74 20 73 79 73 | develop|ment sys| |00002380| 63 61 6c 20 70 72 6f 67 | 72 61 6d 6d 65 72 73 2e |cal prog|rammers.| |00002390| 20 54 68 65 20 64 65 76 | 65 6c 6f 70 6d 65 6e 74 | The dev|elopment| |000023a0| 20 73 79 73 74 65 6d 73 | 20 61 6e 64 20 63 6f 6d | systems| and com| |000023b0| 70 69 6c 65 72 73 20 75 | 73 65 64 20 66 6f 72 20 |pilers u|sed for | |000023c0| 67 65 6e 65 72 61 74 69 | 6e 67 20 61 6e 64 20 63 |generati|ng and c| |000023d0| 6f 6d 70 61 72 69 6e 67 | 20 63 6f 64 65 20 61 72 |omparing| code ar| |000023e0| 65 20 4d 50 57 20 33 2e | 32 20 28 43 2c 20 43 2b |e MPW 3.|2 (C, C+| |000023f0| 2b 2c 20 61 6e 64 20 50 | 61 73 63 61 6c 29 2c 20 |+, and P|ascal), | |00002400| 54 48 49 4e 4b 20 43 20 | 35 2e 30 2e 32 20 61 6e |THINK C |5.0.2 an| |00002410| 64 20 54 48 49 4e 4b 20 | 50 61 73 63 61 6c 20 34 |d THINK |Pascal 4| |00002420| 2e 30 2e 31 2e 20 55 6c | 74 72 61 53 6c 69 6d 46 |.0.1. Ul|traSlimF| |00002430| 61 73 74 20 77 61 73 20 | 75 73 65 64 20 75 6e 64 |ast was |used und| |00002440| 65 72 20 4d 50 57 20 74 | 6f 20 67 65 6e 65 72 61 |er MPW t|o genera| |00002450| 74 65 20 73 6f 75 72 63 | 65 2f 61 73 73 65 6d 62 |te sourc|e/assemb| |00002460| 6c 79 20 6c 69 73 74 69 | 6e 67 73 20 66 6f 72 20 |ly listi|ngs for | |00002470| 63 6f 6d 70 61 72 69 73 | 6f 6e 73 20 77 68 69 6c |comparis|ons whil| |00002480| 65 6e 74 20 70 6c 61 63 | 65 73 20 28 69 6e 20 74 |ent plac|es (in t| |00002490| 68 65 20 73 61 6d 65 20 | 72 6f 75 74 69 6e 65 29 |he same |routine)| |000024a0| 20 77 69 74 68 20 74 68 | 65 20 73 61 6d 65 20 64 | with th|e same d| |000024b0| 61 74 61 3f 20 43 6f 75 | 6c 64 20 74 68 65 20 77 |ata? 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Near| |00002680| 65 20 69 73 20 73 6c 6f | 77 2c 20 6f 6e 6c 79 20 |e is slo|w, only | |00002690| 74 6f 20 66 69 6e 64 20 | 6f 75 74 20 74 68 61 74 |to find |out that| |000026a0| 20 69 74 20 69 73 20 75 | 73 65 64 20 6c 65 73 73 | it is u|sed less| |000026b0| 20 66 72 65 71 75 65 6e | 74 6c 79 20 74 68 61 6e | frequen|tly than| |000026c0| 20 61 20 72 6f 75 74 69 | 6e 65 20 77 68 69 63 68 | a routi|ne which| |000026d0| 20 69 73 20 76 65 72 79 | 20 69 6e 65 66 66 69 63 | is very| ineffic| |000026e0| 69 65 6e 74 20 77 68 69 | 63 68 20 77 61 73 6e d5 |ient whi|ch wasn.| |000026f0| 74 20 65 76 65 6e 20 65 | 78 61 6d 69 6e 65 64 2e |t even e|xamined.| |00002700| 0d 41 73 20 79 6f 75 20 | 62 65 63 6f 6d 65 20 66 |.As you |become f| |00002710| 61 6d 69 6c 69 61 72 20 | 77 69 74 68 20 61 6e 64 |amiliar |with and| |00002720| 20 70 72 61 63 74 69 63 | 65 20 75 73 69 6e 67 20 | practic|e using | |00002730| 6f 70 74 69 6d 69 7a 69 | 6e 67 20 74 65 63 68 6e |optimizi|ng techn| |00002740| 69 71 75 65 73 2c 20 74 | 68 65 20 63 6f 64 65 20 |iques, t|he code | |00002750| 79 6f 75 20 77 72 69 74 | 65 20 6f 6e 20 61 20 64 |you writ|e on a d| |00002760| 61 69 6c 79 20 62 61 73 | 69 73 20 77 69 6c 6c 20 |aily bas|is will | |00002770| 69 6d 70 72 6f 76 65 20 | 61 6e 64 0d 2b 09 4c 65 |improve |and.+.Le| |00002780| 63 63 75 72 2e 20 4d 61 | 6b 65 20 73 75 72 65 20 |ccur. Ma|ke sure | |00002790| 79 6f 75 20 64 6f 6e d5 | 74 20 61 63 74 69 76 61 |you don.|t activa| |000027a0| 74 65 20 61 6e 64 20 64 | 65 61 63 74 69 76 61 74 |te and d|eactivat| |000027b0| 65 20 69 74 65 6d 73 20 | 6f 6e 20 74 68 65 20 73 |e items |on the s| |000027c0| 63 72 65 65 6e 2e 20 54 | 68 65 20 66 6c 69 63 6b |creen. 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Th| |00002960| 65 72 65 20 61 72 65 20 | 74 77 69 7a 61 74 69 6f |ere are |twizatio| |00002970| 6e 73 2e 20 54 68 65 72 | 65 20 61 72 65 20 74 77 |ns. Ther|e are tw| |00002980| 6e 65 65 64 2e 20 44 6f | 6e d5 74 20 72 65 2d 69 |need. Do|n.t re-i| |00002990| 6e 76 65 6e 74 20 74 68 | 65 20 77 68 65 65 6c 20 |nvent th|e wheel | |000029a0| 69 66 20 79 6f 75 20 63 | 61 6e 20 68 65 6c 70 20 |if you c|an help | |000029b0| 69 74 2e 20 45 76 65 6e | 20 74 68 6f 75 67 68 20 |it. Even| though | |000029c0| 74 68 69 73 20 6d 61 79 | 20 6e 6f 74 20 73 65 65 |this may| not see| |000029d0| 6d 20 74 6f 20 62 65 20 | 61 6e 20 6f 70 74 69 6d |m to be |an optim| |000029e0| 69 7a 61 74 69 6f 6e 20 | 69 73 73 75 65 2c 20 69 |ization |issue, i| |000029f0| 74 20 69 73 2e 20 4c 69 | 62 72 61 72 69 65 73 20 |t is. 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(Note| |00002a80| 20 74 68 61 74 20 6d 61 | 74 68 20 6c 69 62 72 61 | that ma|th libra| |00002a90| 72 79 20 66 75 6e 63 74 | 69 6f 6e 20 74 69 6d 69 |ry funct|ion timi| |00002aa0| 6e 67 73 20 6d 61 79 20 | 76 61 72 79 20 64 65 70 |ngs may |vary dep| |00002ab0| 65 6e 64 69 6e 67 20 75 | 70 6f 6e 20 74 68 65 20 |ending u|pon the | |00002ac0| 61 63 63 75 72 61 63 79 | 20 6f 66 20 74 68 65 20 |accuracy| of the | |00002ad0| 72 6f 75 74 69 6e 65 73 | 20 62 65 69 6e 67 20 75 |routines| being u| |00002ae0| 73 65 64 2e 29 20 49 66 | 20 79 6f 75 20 68 61 76 |sed.) 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The |part of | |00002ce0| 74 68 65 20 6d 65 6d 6f | 72 79 20 6d 61 6e 61 67 |the memo|ry manag| |00002cf0| 65 72 20 77 68 69 63 68 | 20 63 61 75 73 65 73 20 |er which| causes | |00002d00| 74 68 65 20 6d 6f 73 74 | 20 67 72 69 65 66 2c 20 |the most| grief, | |00002d10| 61 72 65 20 68 61 6e 64 | 6c 65 73 2e 20 4d 61 6e |are hand|les. Man| |00002d20| 79 20 70 72 6f 67 72 61 | 6d 6d 65 72 73 20 61 72 |y progra|mmers ar| |00002d30| 65 20 70 61 72 61 6e 6f | 69 64 20 61 62 6f 75 74 |e parano|id about| |00002d40| 20 64 65 2d 72 65 66 65 | 72 65 6e 63 69 6e 67 20 | de-refe|rencing | |00002d50| 61 20 68 61 6e 64 6c 65 | 2e 20 53 6f 6d 65 20 77 |a handle|. Some w| |00002d60| 69 6c 6c 20 61 6c 77 61 | 79 73 20 6c 6f 63 6b 20 |ill alwa|ys lock | |00002d70| 61 20 68 61 6e 64 6c 65 | 20 62 65 66 6f 72 65 20 |a handle| before | |00002d80| 75 73 69 6e 67 20 69 74 | 20 69 6e 20 61 6e 79 20 |using it| in any | |00002d90| 77 61 79 2e 20 54 68 69 | 73 20 69 73 20 76 65 72 |way. Thi|s is ver| |00002da0| 79 20 69 6e 65 66 66 69 | 63 69 65 6e 74 20 61 6e |y ineffi|cient an| |00002db0| 64 20 77 61 73 74 65 66 | 75 6c 20 6f 66 20 43 50 |d wastef|ul of CP| |00002dc0| 55 20 74 69 6d 65 2e 0d | 48 61 6e 64 6c 65 73 20 |U time..|Handles | |00002dd0| 73 68 6f 75 6c 64 20 6f | 6e 6c 79 20 62 65 20 6c |should o|nly be l| |00002de0| 6f 63 6b 65 64 20 77 68 | 65 6e 20 74 68 65 20 64 |ocked wh|en the d| |00002df0| 61 74 61 20 69 6e 20 74 | 68 65 20 68 61 6e 64 6c |ata in t|he handl| |00002e00| 65 20 6d 61 79 20 6d 6f | 76 65 20 64 75 72 69 6e |e may mo|ve durin| |00002e10| 67 20 61 6e 20 6f 70 65 | 72 61 74 69 6f 6e 20 77 |g an ope|ration w| |00002e20| 68 69 63 68 20 75 73 65 | 73 20 74 68 65 20 64 61 |hich use|s the da| |00002e30| 74 61 2e 20 54 68 69 73 | 20 74 79 70 69 63 61 6c |ta. This| typical| |00002e40| 6c 79 20 6d 65 61 6e 73 | 20 74 68 61 74 20 69 66 |ly means| that if| |00002e50| 20 79 6f 75 20 61 72 65 | 20 64 65 2d 72 65 66 65 | you are| de-refe| |00002e60| 72 65 6e 63 69 6e 67 20 | 61 20 68 61 6e 64 6c 65 |rencing |a handle| |00002e70| 20 6f 6e 20 61 20 74 6f | 6f 6c 62 6f 78 20 63 61 | on a to|olbox ca| |00002e80| 6c 6c 20 28 6f 72 20 6f | 6e 65 20 6f 66 20 79 6f |ll (or o|ne of yo| |00002e90| 75 72 20 6f 77 6e 20 72 | 6f 75 74 69 6e 65 73 20 |ur own r|outines | |00002ea0| 77 68 69 63 68 20 6d 61 | 6b 65 73 20 61 20 74 6f |which ma|kes a to| |00002eb0| 6f 6c 62 6f 78 20 63 61 | 6c 6c 29 20 77 68 69 63 |olbox ca|ll) whic| |00002ec0| 68 20 6d 6f 76 65 73 20 | 6d 65 6d 6f 72 79 2c 20 |h moves |memory, | |00002ed0| 74 68 65 20 68 61 6e 64 | 6c 65 20 6e 65 65 64 73 |the hand|le needs| |00002ee0| 20 74 6f 20 62 65 20 6c | 6f 63 6b 65 64 2e 20 45 | to be l|ocked. E| |00002ef0| 61 63 68 20 76 6f 6c 75 | 6d 65 20 6f 66 20 49 6e |ach volu|me of In| |00002f00| 73 69 64 65 20 4d 61 63 | 69 6e 74 6f 73 68 20 68 |side Mac|intosh h| |00002f10| 61 73 20 61 6e 20 61 70 | 70 65 6e 64 69 78 20 6c |as an ap|pendix l| |00002f20| 69 73 74 69 6e 67 20 61 | 6c 6c 20 74 68 65 20 72 |isting a|ll the r| |00002f30| 6f 75 74 69 6e 65 73 20 | 69 6e 20 74 68 61 74 20 |outines |in that | |00002f40| 76 6f 6c 75 6d 65 20 77 | 68 69 63 68 20 6d 61 79 |volume w|hich may| |00002f50| 20 6d 6f 76 65 20 6f 72 | 20 70 75 72 67 65 20 6d | move or| purge m| |00002f60| 65 6d 6f 72 79 2e 20 54 | 68 65 72 65 20 69 73 20 |emory. T|here is | |00002f70| 61 6c 73 6f 20 61 20 73 | 65 63 74 69 6f 6e 20 69 |also a s|ection i| |00002f80| 6e 20 54 48 49 4e 4b 20 | 52 65 66 65 72 65 6e 63 |n THINK |Referenc| |00002f90| 65 20 77 68 69 63 68 20 | 6c 69 73 74 73 20 61 6c |e which |lists al| |00002fa0| 6c 20 74 68 65 20 63 61 | 6c 6c 73 20 66 72 6f 6d |l the ca|lls from| |00002fb0| 20 49 6e 73 69 64 65 20 | 4d 61 63 69 6e 74 6f 73 | Inside |Macintos| |00002fc0| 68 20 49 2d 56 20 28 65 | 78 63 65 70 74 20 6f 66 |h I-V (e|xcept of| |00002fd0| 20 63 6f 75 72 73 65 20 | 74 68 65 20 41 70 70 6c | course |the Appl| |00002fe0| 65 54 61 6c 6b 20 61 6e | 64 20 53 6f 75 6e 64 20 |eTalk an|d Sound | |00002ff0| 4d 61 6e 61 67 65 72 73 | 29 20 61 6e 64 20 77 68 |Managers|) and wh| |00003000| 65 74 68 65 72 20 74 68 | 65 79 20 6d 6f 76 65 20 |ether th|ey move | |00003010| 6d 65 6d 6f 72 79 20 6f | 72 20 6e 6f 74 2e 0d 41 |memory o|r not..A| |00003020| 20 63 61 73 65 20 77 68 | 69 63 68 20 63 61 6e 20 | case wh|ich can | |00003030| 62 65 20 63 6f 6e 66 75 | 73 69 6e 67 20 69 73 20 |be confu|sing is | |00003040| 61 20 68 61 6e 64 6c 65 | 20 74 6f 20 61 20 73 74 |a handle| to a st| |00003050| 72 75 63 74 75 72 65 20 | 77 68 69 63 68 20 63 6f |ructure |which co| |00003060| 6e 74 61 69 6e 73 20 70 | 6f 69 6e 74 65 72 73 2e |ntains p|ointers.| |00003070| 20 49 66 20 79 6f 75 20 | 6e 65 65 64 20 74 6f 20 | If you |need to | |00003080| 70 61 73 73 20 6f 6e 65 | 20 6f 66 20 74 68 65 20 |pass one| of the | |00003090| 70 6f 69 6e 74 65 72 73 | 20 74 6f 20 61 20 74 6f |pointers| to a to| |000030a0| 6f 6c 62 6f 78 20 63 61 | 6c 6c 20 77 68 69 63 68 |olbox ca|ll which| |000030b0| 20 6d 61 79 20 6d 6f 76 | 65 20 6d 65 6d 6f 72 79 | may mov|e memory| |000030c0| 2c 20 64 6f 20 79 6f 75 | 20 6e 65 65 64 20 74 6f |, do you| need to| |000030d0| 20 6c 6f 63 6b 20 74 68 | 65 20 68 61 6e 64 6c 65 | lock th|e handle| |000030e0| 3f 20 54 68 65 20 61 6e | 73 77 65 72 20 69 73 20 |? The an|swer is | |000030f0| 6e 6f 2c 20 69 66 20 79 | 6f 75 20 61 72 65 20 70 |no, if y|ou are p| |00003100| 61 73 73 69 6e 67 20 74 | 68 65 20 70 6f 69 6e 74 |assing t|he point| |00003110| 65 72 20 62 79 20 76 61 | 6c 75 65 20 28 69 6e 20 |er by va|lue (in | |00003120| 50 61 73 63 61 6c 29 20 | 6f 72 20 6f 6e 20 74 68 |Pascal) |or on th| |00003130| 65 20 73 74 61 63 6b 20 | 28 69 6e 20 43 20 70 61 |e stack |(in C pa| |00003140| 72 6c 61 6e 63 65 29 2e | 20 53 69 6e 63 65 20 77 |rlance).| Since w| |00003150| 68 61 74 20 69 73 20 62 | 65 69 6e 67 20 75 73 65 |hat is b|eing use| |00003160| 64 20 69 73 20 61 63 74 | 75 61 6c 6c 79 20 61 20 |d is act|ually a | |00003170| 72 65 61 6c 20 70 6f 69 | 6e 74 65 72 2c 20 6e 6f |real poi|nter, no| |00003180| 20 70 72 6f 62 6c 65 6d | 20 6f 63 63 75 72 73 2e | problem| occurs.| |00003190| 20 54 68 65 20 70 6f 69 | 6e 74 65 72 20 69 74 73 | The poi|nter its| |000031a0| 65 6c 66 20 69 73 20 70 | 61 73 73 65 64 2e 20 49 |elf is p|assed. I| |000031b0| 66 2c 20 68 6f 77 65 76 | 65 72 2c 20 79 6f 75 20 |f, howev|er, you | |000031c0| 77 65 72 65 20 70 61 73 | 73 69 6e 67 20 74 68 65 |were pas|sing the| |000031d0| 20 61 64 64 72 65 73 73 | 20 6f 66 20 74 68 65 20 | address| of the | |000031e0| 70 6f 69 6e 74 65 72 20 | 28 61 20 76 61 72 20 70 |pointer |(a var p| |000031f0| 61 72 61 6d 65 74 65 72 | 20 69 6e 20 50 61 73 63 |arameter| in Pasc| |00003200| 61 6c 29 20 62 65 63 61 | 75 73 65 20 69 74 20 6d |al) beca|use it m| |00003210| 69 67 68 74 20 63 68 61 | 6e 67 65 20 28 73 61 79 |ight cha|nge (say| |00003220| 20 79 6f 75 20 68 61 64 | 20 61 20 66 75 6e 63 74 | you had| a funct| |00003230| 69 6f 6e 20 73 69 6d 69 | 6c 61 72 20 74 6f 20 48 |ion simi|lar to H| |00003240| 61 6e 64 54 6f 48 61 6e | 64 20 62 75 74 20 77 72 |andToHan|d but wr| |00003250| 69 74 74 65 6e 20 74 6f | 20 75 73 65 20 70 6f 69 |itten to| use poi| |00003260| 6e 74 65 72 73 29 2c 20 | 74 68 65 6e 20 74 68 65 |nters), |then the| |00003270| 20 68 61 6e 64 6c 65 20 | 77 6f 75 6c 64 20 6e 65 | handle |would ne| |00003280| 6e 20 74 6f 20 6f 70 74 | 69 6d 69 7a 65 20 69 6e |n to opt|imize in| |00003290| 74 65 6c 6c 69 67 65 6e | 74 6c 79 2e 20 43 6f 6e |telligen|tly. Con| |000032a0| 63 65 6e 74 72 61 74 65 | 20 6f 6e 20 61 72 65 61 |centrate| on area| |000032b0| 73 20 77 68 69 63 68 20 | 61 72 65 20 63 72 75 63 |s which |are cruc| |000032c0| 69 61 6c 20 6f 72 20 68 | 61 76 65 20 68 69 67 68 |ial or h|ave high| |000032d0| 20 75 73 65 72 20 76 69 | 73 69 62 69 6c 69 74 79 | user vi|sibility| |000032e0| 20 66 69 72 73 74 2e 0d | 0d 4d 6f 73 74 20 64 65 | first..|.Most de| |000032f0| 76 65 6c 6f 70 6d 65 6e | 74 20 65 6e 76 69 72 6f |velopmen|t enviro| |00003300| 6e 6d 65 6e 74 73 20 68 | 61 76 65 20 61 20 70 72 |nments h|ave a pr| |00003310| 6f 66 69 6c 65 72 20 73 | 75 70 70 6c 69 65 64 20 |ofiler s|upplied | |00003320| 77 69 74 68 20 74 68 65 | 6d 2e 20 4d 50 57 20 68 |with the|m. MPW h| |00003330| 61 73 20 61 20 74 6f 6f | 6c 20 63 61 6c 6c 65 64 |as a too|l called| |00003340| 20 50 72 6f 66 66 2c 20 | 77 68 69 6c 65 20 62 6f | Proff, |while bo| |00003350| 74 68 20 54 48 49 4e 4b | 20 43 20 61 6e 64 20 50 |th THINK| C and P| |00003360| 61 73 63 61 6c 20 68 61 | 76 65 20 74 68 65 69 72 |ascal ha|ve their| |00003370| 61 73 63 61 6c 20 68 61 | 76 65 20 74 68 65 69 72 |ascal ha|ve their| |00003380| 75 70 79 69 6e 67 20 74 | 68 65 20 73 70 6f 74 20 |upying t|he spot | |00003390| 77 68 69 63 68 20 69 73 | 20 61 62 6f 75 74 20 74 |which is| about t| |000033a0| 6f 20 62 65 20 6f 76 65 | 72 77 72 69 74 74 65 6e |o be ove|rwritten| |000033b0| 2e 0d 53 6f 20 77 68 61 | 74 20 64 6f 65 73 20 61 |..So wha|t does a| |000033c0| 6c 6c 20 74 68 69 73 20 | 68 61 76 65 20 74 6f 20 |ll this |have to | |000033d0| 64 6f 20 77 69 74 68 20 | 73 6f 75 72 63 65 20 63 |do with |source c| |000033e0| 6f 64 65 20 6f 70 74 69 | 6d 69 7a 61 74 69 6f 6e |ode opti|mization| |000033f0| 3f 20 43 61 6c 6c 69 6e | 67 20 48 4c 6f 63 6b 20 |? Callin|g HLock | |00003400| 65 78 63 65 73 73 69 76 | 65 6c 79 20 63 61 6e 20 |excessiv|ely can | |00003410| 62 65 20 65 78 70 65 6e | 73 69 76 65 2e 20 45 76 |be expen|sive. Ev| |00003420| 65 6e 20 74 68 6f 75 67 | 68 20 74 68 65 20 69 6e |en thoug|h the in| |00003430| 74 65 72 6e 61 6c 73 20 | 6f 66 20 74 68 65 20 74 |ternals |of the t| |00003440| 72 61 70 20 61 72 65 20 | 76 65 72 79 20 73 68 6f |rap are |very sho| |00003450| 72 74 2c 20 74 68 65 20 | 74 72 61 70 20 64 69 73 |rt, the |trap dis| |00003460| 70 61 74 63 68 65 72 20 | 68 61 73 20 61 20 68 69 |patcher |has a hi| |00003470| 67 68 20 6f 76 65 72 68 | 65 61 64 2e 20 28 52 65 |gh overh|ead. (Re| |00003480| 6d 65 6d 62 65 72 20 74 | 68 65 20 66 69 72 73 74 |member t|he first| |00003490| 20 72 75 6c 65 20 6f 66 | 20 74 68 75 6d 62 2c 20 | rule of| thumb, | |000034a0| 64 69 73 63 75 73 73 65 | 64 20 70 72 65 76 69 6f |discusse|d previo| |000034b0| 75 73 6c 79 2e 29 20 41 | 6e 64 20 61 66 74 65 72 |usly.) 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(F| |00003520| 61 69 6c 75 72 65 20 74 | 6f 20 75 6e 6c 6f 63 6b |ailure t|o unlock| |00003530| 20 68 61 6e 64 6c 65 73 | 20 77 69 6c 6c 20 6c 65 | handles| will le| |00003540| 61 64 20 74 6f 20 68 65 | 61 70 20 66 72 61 67 6d |ad to he|ap fragm| |00003550| 65 6e 74 61 74 69 6f 6e | 20 61 6e 64 20 69 73 20 |entation| and is | |00003560| 61 20 6c 65 61 64 69 6e | 67 20 63 61 75 73 65 20 |a leadin|g cause | |00003570| 6f 66 20 74 6f 6f 74 68 | 20 64 65 63 61 79 2e 29 |of tooth| decay.)| |00003580| 0d 41 20 63 6f 72 6f 6c | 6c 61 72 79 20 74 6f 20 |.A corol|lary to | |00003590| 74 68 65 20 65 78 63 65 | 73 73 69 76 65 20 48 4c |the exce|ssive HL| |000035a0| 6f 63 6b 2f 48 55 6e 6c | 6f 63 6b 20 70 72 6f 62 |ock/HUnl|ock prob| |000035b0| 6c 65 6d 20 69 73 20 74 | 6f 20 6e 6f 74 20 6c 6f |lem is t|o not lo| |000035c0| 63 6b 20 74 68 65 20 73 | 61 6d 65 20 68 61 6e 64 |ck the s|ame hand| |000035d0| 6c 65 20 72 65 70 65 61 | 74 65 64 6c 79 20 69 6e |le repea|tedly in| |000035e0| 20 61 20 73 69 6e 67 6c | 65 20 72 6f 75 74 69 6e | a singl|e routin| |000035f0| 65 2e 20 49 66 20 79 6f | 75 20 6e 65 65 64 20 74 |e. If yo|u need t| |00003600| 6f 20 6c 6f 63 6b 20 61 | 6e 64 20 75 6e 6c 6f 63 |o lock a|nd unloc| |00003610| 6b 20 69 74 20 6d 75 6c | 74 69 70 6c 65 20 74 69 |k it mul|tiple ti| |00003620| 6d 65 73 2c 20 61 73 6b | 20 79 6f 75 72 73 65 6c |mes, ask| yoursel| |00003630| 66 20 77 68 79 2e 20 44 | 6f 65 73 20 69 74 20 6d |f why. D|oes it m| |00003640| 61 6b 65 20 6d 6f 72 65 | 20 73 65 6e 73 65 20 74 |ake more| sense t| |00003650| 6f 20 6a 75 73 74 20 6c | 6f 63 6b 20 69 74 20 6f |o just l|ock it o| |00003660| 6e 63 65 20 61 74 20 74 | 68 65 20 62 65 67 69 6e |nce at t|he begin| |00003670| 6e 69 6e 67 20 6f 66 20 | 74 68 65 20 72 6f 75 74 |ning of |the rout| |00003680| 69 6e 65 20 61 6e 64 20 | 75 6e 6c 6f 63 6b 20 69 |ine and |unlock i| |00003690| 74 20 62 65 66 6f 72 65 | 20 65 78 69 74 69 6e 67 |t before| exiting| |000036a0| 3f 20 54 68 65 20 6f 6e | 6c 79 20 74 69 6d 65 20 |? 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On th| |00004d50| 65 20 36 38 30 30 30 2c | 20 61 20 73 69 67 6e 65 |e 68000,| a signe| |00004d60| 64 20 64 69 76 69 73 69 | 6f 6e 20 63 61 6e 20 74 |d divisi|on can t| |00004d70| 61 6b 65 20 31 35 38 20 | 70 72 6f 63 65 73 73 6f |ake 158 |processo| |00004d80| 72 20 63 79 63 6c 65 73 | 2e 20 41 6c 74 68 6f 75 |r cycles|. 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Cons| |00004e30| 69 64 65 72 20 20 61 20 | 6c 6f 6f 70 20 77 68 69 |ider a |loop whi| |00004e40| 63 68 20 67 6f 65 73 20 | 66 72 6f 6d 20 31 20 74 |ch goes |from 1 t| |00004e50| 6f 20 31 30 30 2e 20 49 | 6e 73 69 64 65 20 74 68 |o 100. I|nside th| |00004e60| 61 74 20 6c 6f 6f 70 2c | 20 74 77 6f 20 64 69 76 |at loop,| two div| |00004e70| 69 73 69 6f 6e 73 20 74 | 61 6b 65 20 70 6c 61 63 |isions t|ake plac| |00004e80| 65 2e 20 54 68 69 73 20 | 63 6f 6d 65 73 20 74 6f |e. This |comes to| |00004e90| 20 61 20 70 6f 74 65 6e | 74 69 61 6c 20 74 69 6d | a poten|tial tim| |00004ea0| 65 20 6f 66 20 33 31 36 | 30 30 20 70 72 6f 63 65 |e of 316|00 proce| |00004eb0| 73 73 6f 72 20 63 79 63 | 6c 65 73 20 6f 72 20 61 |ssor cyc|les or a| |00004ec0| 62 6f 75 74 20 31 2f 32 | 35 30 74 68 20 6f 66 20 |bout 1/2|50th of | |00004ed0| 61 20 73 65 63 6f 6e 64 | 20 6f 6e 20 61 20 43 6c |a second| on a Cl| |00004ee0| 61 73 73 69 63 2e 20 57 | 68 69 6c 65 20 74 68 69 |assic. 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