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|00000000| 44 61 74 65 3a 20 54 68 | 75 2c 20 32 31 20 4a 75 |Date: Th|u, 21 Ju|
|00000010| 6c 20 39 34 20 31 30 3a | 35 33 20 42 53 54 0a 46 |l 94 10:|53 BST.F|
|00000020| 72 6f 6d 3a 20 73 74 65 | 76 65 40 63 73 2e 63 69 |rom: ste|ve@cs.ci|
|00000030| 74 79 2e 61 63 2e 75 6b | 20 28 53 74 65 76 65 6e |ty.ac.uk| (Steven|
|00000040| 20 45 6b 65 72 29 0a 54 | 6f 3a 20 67 65 6d 2d 6c | Eker).T|o: gem-l|
|00000050| 69 73 74 40 77 6f 72 6c | 64 2e 73 74 64 2e 63 6f |ist@worl|d.std.co|
|00000060| 6d 0a 53 75 62 6a 65 63 | 74 3a 20 64 69 67 65 73 |m.Subjec|t: diges|
|00000070| 74 0a 50 72 65 63 65 64 | 65 6e 63 65 3a 20 62 75 |t.Preced|ence: bu|
|00000080| 6c 6b 0a 0a 0a 6f 67 61 | 6c 40 63 69 78 2e 63 6f |lk...oga|l@cix.co|
|00000090| 6d 70 75 6c 69 6e 6b 2e | 63 6f 2e 75 6b 20 28 4f |mpulink.|co.uk (O|
|000000a0| 66 69 72 20 47 61 6c 29 | 3a 0a 3e 4f 4b 2e 20 49 |fir Gal)|:.>OK. I|
|000000b0| 66 20 79 6f 75 20 6e 65 | 65 64 20 74 6f 20 64 69 |f you ne|ed to di|
|000000c0| 73 70 6c 61 79 20 61 20 | 6d 6f 64 61 6c 20 64 69 |splay a |modal di|
|000000d0| 61 6c 6f 67 20 64 6f 20 | 69 74 20 69 6e 20 61 20 |alog do |it in a |
|000000e0| 77 69 6e 64 6f 77 2e 0a | 0a 57 68 61 74 20 64 6f |window..|.What do|
|000000f0| 20 79 6f 75 20 64 6f 20 | 69 66 20 79 6f 75 27 72 | you do |if you'r|
|00000100| 65 20 72 75 6e 6e 69 6e | 67 20 6f 6e 20 61 6e 20 |e runnin|g on an |
|00000110| 6f 6c 64 20 6d 61 63 68 | 69 6e 65 20 61 6e 64 20 |old mach|ine and |
|00000120| 74 68 65 72 65 27 73 20 | 6e 6f 20 6d 6f 72 65 0a |there's |no more.|
|00000130| 77 69 6e 64 6f 77 73 20 | 6c 65 66 74 3f 20 44 6f |windows |left? Do|
|00000140| 20 79 6f 75 20 70 75 74 | 20 75 70 20 61 20 52 65 | you put| up a Re|
|00000150| 61 6c 44 69 61 6c 6f 67 | 20 74 6f 20 69 6e 66 6f |alDialog| to info|
|00000160| 72 6d 20 74 68 65 20 75 | 73 65 72 20 6f 66 20 74 |rm the u|ser of t|
|00000170| 68 69 73 20 66 61 63 74 | 3f 0a 0a 6d 66 6f 72 67 |his fact|?..mforg|
|00000180| 65 74 40 65 6c 66 68 61 | 76 65 6e 2e 65 72 73 79 |et@elfha|ven.ersy|
|00000190| 73 2e 65 64 6d 6f 6e 74 | 6f 6e 2e 61 62 2e 63 61 |s.edmont|on.ab.ca|
|000001a0| 20 28 4d 69 63 68 65 6c | 20 46 6f 72 67 65 74 29 | (Michel| Forget)|
|000001b0| 3a 0a 3e 53 69 67 68 2e | 20 20 5f 49 5f 20 75 73 |:.>Sigh.|  _I_ us|
|000001c0| 65 20 69 74 2e 20 20 28 | 59 65 73 2c 20 49 20 66 |e it.  (|Yes, I f|
|000001d0| 65 65 6c 20 73 74 75 70 | 69 64 20 6e 6f 77 2c 20 |eel stup|id now, |
|000001e0| 73 69 6e 63 65 20 6e 6f | 77 20 61 74 20 6c 65 61 |since no|w at lea|
|000001f0| 73 74 20 6f 6e 65 20 72 | 65 61 73 6f 6e 0a 3e 77 |st one r|eason.>w|
|00000200| 68 79 20 49 20 73 68 6f | 75 6c 64 20 6e 6f 74 2e |hy I sho|uld not.|
|00000210| 29 20 20 55 73 69 6e 67 | 20 6d 61 6c 6c 6f 63 28 |)  Using| malloc(|
|00000220| 29 20 69 73 20 6f 6e 6c | 79 20 61 20 64 65 6c 61 |) is onl|y a dela|
|00000230| 79 2c 20 74 68 6f 75 67 | 68 2c 20 66 6f 72 20 54 |y, thoug|h, for T|
|00000240| 4f 53 20 31 2e 30 0a 3e | 75 73 65 72 73 2e 20 20 |OS 1.0.>|users.  |
|00000250| 49 66 20 79 6f 75 20 61 | 6c 6c 6f 63 61 74 65 20 |If you a|llocate |
|00000260| 61 20 6c 6f 74 20 6f 66 | 20 6d 65 6d 6f 72 79 20 |a lot of| memory |
|00000270| 28 6c 69 6b 65 20 4d 61 | 73 74 65 72 42 72 6f 77 |(like Ma|sterBrow|
|00000280| 73 65 20 64 6f 65 73 29 | 20 74 68 65 6e 0a 3e 6d |se does)| then.>m|
|00000290| 61 6c 6c 6f 63 28 29 20 | 77 69 6c 6c 20 65 6e 64 |alloc() |will end|
|000002a0| 20 75 70 20 63 61 6c 6c | 69 6e 67 20 4d 61 6c 6c | up call|ing Mall|
|000002b0| 6f 63 28 29 20 6d 6f 72 | 65 20 74 68 61 74 20 73 |oc() mor|e that s|
|000002c0| 69 78 74 65 65 6e 20 74 | 69 6d 65 73 2c 20 61 6e |ixteen t|imes, an|
|000002d0| 64 20 79 6f 75 0a 3e 63 | 61 6e 20 73 61 79 20 62 |d you.>c|an say b|
|000002e0| 79 65 2d 62 79 65 20 74 | 6f 20 54 4f 53 20 31 2e |ye-bye t|o TOS 1.|
|000002f0| 30 2e 20 20 49 73 20 74 | 68 65 72 65 20 2d 61 6e |0.  Is t|here -an|
|00000300| 6f 74 68 65 72 2d 20 72 | 65 61 73 6f 6e 20 77 68 |other- r|eason wh|
|00000310| 79 20 49 20 73 68 6f 75 | 6c 64 20 6e 6f 74 0a 3e |y I shou|ld not.>|
|00000320| 75 73 65 20 69 74 3f 0a | 0a 41 20 73 6d 61 72 74 |use it?.|.A smart|
|00000330| 20 6d 61 6c 6c 6f 63 28 | 29 20 73 68 6f 75 6c 64 | malloc(|) should|
|00000340| 20 75 73 65 20 61 6e 20 | 61 64 61 70 74 69 76 65 | use an |adaptive|
|00000350| 20 61 6c 67 6f 72 69 74 | 68 6d 20 77 68 65 6e 20 | algorit|hm when |
|00000360| 63 68 6f 6f 73 69 6e 67 | 20 68 75 6e 6b 20 73 69 |choosing| hunk si|
|00000370| 7a 65 73 0a 74 6f 20 4d | 61 6c 6c 6f 63 28 29 20 |zes.to M|alloc() |
|00000380| 28 49 20 62 65 6c 69 65 | 76 65 20 74 68 65 20 63 |(I belie|ve the c|
|00000390| 75 72 72 65 6e 74 20 67 | 63 63 20 6c 69 62 63 20 |urrent g|cc libc |
|000003a0| 6d 61 6c 6c 6f 63 20 64 | 6f 65 73 20 74 68 69 73 |malloc d|oes this|
|000003b0| 28 29 29 2e 0a 41 6e 20 | 65 76 65 6e 20 73 6d 61 |())..An |even sma|
|000003c0| 72 74 65 72 20 6d 61 6c | 6c 6f 63 28 29 20 73 68 |rter mal|loc() sh|
|000003d0| 6f 75 6c 64 20 63 68 65 | 63 6b 20 69 66 20 69 74 |ould che|ck if it|
|000003e0| 73 20 72 75 6e 6e 69 6e | 67 20 6f 6e 20 61 20 65 |s runnin|g on a e|
|000003f0| 61 72 6c 79 20 54 4f 53 | 20 61 6e 64 0a 69 66 20 |arly TOS| and.if |
|00000400| 73 6f 20 6d 61 6b 65 20 | 73 75 72 65 20 69 74 73 |so make |sure its|
|00000410| 20 31 36 74 68 20 4d 61 | 6c 6c 6f 63 28 29 20 67 | 16th Ma|lloc() g|
|00000420| 72 61 62 73 20 61 6c 6c | 20 72 65 6d 61 69 6e 69 |rabs all| remaini|
|00000430| 6e 67 20 68 65 61 70 20 | 62 61 72 20 38 28 3f 29 |ng heap |bar 8(?)|
|00000440| 4b 20 2d 0a 4e 6f 74 20 | 70 6c 65 61 73 61 6e 74 |K -.Not |pleasant|
|00000450| 20 62 75 74 20 62 65 74 | 74 65 72 20 74 68 61 6e | but bet|ter than|
|00000460| 20 6b 69 6c 6c 69 6e 67 | 20 54 4f 53 20 6f 72 20 | killing| TOS or |
|00000470| 68 61 76 69 6e 67 20 74 | 68 65 20 61 70 70 20 61 |having t|he app a|
|00000480| 62 6f 72 74 20 77 69 74 | 68 0a 6f 75 74 20 6f 66 |bort wit|h.out of|
|00000490| 20 6d 65 6d 6f 72 79 20 | 65 72 72 6f 72 20 77 68 | memory |error wh|
|000004a0| 65 6e 20 74 68 65 72 65 | 73 20 73 74 69 6c 6c 20 |en there|s still |
|000004b0| 70 6c 65 6e 74 79 20 6f | 66 20 52 41 4d 2e 0a 0a |plenty o|f RAM...|
|000004c0| 3e 47 45 4d 2b 2b 20 69 | 73 20 61 20 6d 65 67 61 |>GEM++ i|s a mega|
|000004d0| 2d 6c 69 62 72 61 72 79 | 2c 20 74 68 6f 75 67 68 |-library|, though|
|000004e0| 2e 20 20 4f 66 20 63 6f | 75 72 73 65 20 69 74 20 |.  Of co|urse it |
|000004f0| 69 73 20 62 69 67 2e 20 | 20 41 73 20 66 6f 72 20 |is big. | As for |
|00000500| 74 68 65 20 73 69 7a 65 | 0a 3e 61 6e 64 20 73 70 |the size|.>and sp|
|00000510| 65 65 64 2c 20 63 6f 6e | 73 69 64 65 72 20 74 68 |eed, con|sider th|
|00000520| 61 74 20 79 6f 75 20 61 | 72 65 20 75 73 69 6e 67 |at you a|re using|
|00000530| 20 50 75 72 65 20 43 20 | 61 6e 64 20 47 45 4d 2b | Pure C |and GEM+|
|00000540| 2b 20 75 73 65 73 20 74 | 68 65 0a 3e 6d 6f 6e 73 |+ uses t|he.>mons|
|00000550| 74 65 72 2d 63 6f 6d 70 | 69 6c 65 72 20 43 2b 2b |ter-comp|iler C++|
|00000560| 2e 20 20 48 6f 77 20 62 | 69 67 20 69 73 20 79 6f |.  How b|ig is yo|
|00000570| 75 72 20 6c 69 62 72 61 | 72 79 20 63 6f 6d 70 61 |ur libra|ry compa|
|00000580| 72 65 64 20 74 6f 20 45 | 47 45 4d 2c 20 6f 72 0a |red to E|GEM, or.|
|00000590| 3e 53 47 45 4d 2c 20 6f | 72 20 46 6f 72 63 65 47 |>SGEM, o|r ForceG|
|000005a0| 45 4d 3f 20 20 54 68 6f | 73 65 20 61 72 65 20 74 |EM?  Tho|se are t|
|000005b0| 68 65 20 62 69 67 67 65 | 73 74 20 6c 69 62 72 61 |he bigge|st libra|
|000005c0| 72 69 65 73 20 49 20 63 | 61 6e 20 74 68 69 6e 6b |ries I c|an think|
|000005d0| 20 6f 66 0a 3e 66 6f 72 | 20 50 75 72 65 20 43 2e | of.>for| Pure C.|
|000005e0| 20 20 48 6f 77 20 64 6f | 65 73 20 79 6f 75 72 20 |  How do|es your |
|000005f0| 6c 69 62 72 61 72 79 20 | 66 69 74 20 69 6e 20 77 |library |fit in w|
|00000600| 69 74 68 20 74 68 65 73 | 65 3f 20 20 28 57 68 61 |ith thes|e?  (Wha|
|00000610| 74 20 69 73 20 74 68 65 | 0a 3e 61 63 74 75 61 6c |t is the|.>actual|
|00000620| 20 53 49 5a 45 20 6f 66 | 20 79 6f 75 72 20 6c 69 | SIZE of| your li|
|00000630| 62 72 61 72 79 2c 20 66 | 6f 72 20 65 78 61 6d 70 |brary, f|or examp|
|00000640| 6c 65 3f 29 0a 0a 5c 62 | 65 67 69 6e 7b 68 65 72 |le?)..\b|egin{her|
|00000650| 65 73 79 7d 0a 57 69 74 | 68 20 61 6c 6c 20 74 68 |esy}.Wit|h all th|
|00000660| 69 73 20 74 61 6c 6b 20 | 6f 66 20 47 55 49 20 6c |is talk |of GUI l|
|00000670| 69 62 72 61 72 69 65 73 | 20 68 6f 77 20 61 62 6f |ibraries| how abo|
|00000680| 75 74 20 70 6f 72 74 69 | 6e 67 20 28 6f 72 20 72 |ut porti|ng (or r|
|00000690| 65 69 6d 70 6c 65 6d 65 | 6e 74 69 6e 67 0a 61 20 |eimpleme|nting.a |
|000006a0| 63 75 74 20 64 6f 77 6e | 20 76 65 72 73 69 6f 6e |cut down| version|
|000006b0| 20 6f 66 29 20 61 20 6d | 75 6c 74 69 2d 70 6c 61 | of) a m|ulti-pla|
|000006c0| 74 66 6f 72 6d 20 47 55 | 49 20 6c 69 62 72 61 72 |tform GU|I librar|
|000006d0| 79 20 6f 6e 20 74 6f 70 | 20 6f 66 20 47 45 4d 0a |y on top| of GEM.|
|000006e0| 74 68 61 74 20 77 6f 75 | 6c 64 20 67 69 76 65 20 |that wou|ld give |
|000006f0| 61 6e 20 41 50 49 20 75 | 73 61 62 6c 65 20 6f 6e |an API u|sable on|
|00000700| 20 57 69 6e 33 32 2f 53 | 79 73 74 65 6d 37 2f 58 | Win32/S|ystem7/X|
|00000710| 20 70 6c 61 74 66 6f 72 | 6d 73 2e 0a 49 74 27 73 | platfor|ms..It's|
|00000720| 20 6e 6f 74 20 74 68 61 | 74 20 49 20 64 6f 6e 27 | not tha|t I don'|
|00000730| 74 20 6c 69 6b 65 20 47 | 45 4d 2c 20 69 74 27 73 |t like G|EM, it's|
|00000740| 20 6a 75 73 74 20 74 68 | 61 74 20 49 27 6d 20 6c | just th|at I'm l|
|00000750| 6f 6f 6b 69 6e 67 20 74 | 6f 20 74 68 65 20 64 61 |ooking t|o the da|
|00000760| 79 0a 77 68 65 6e 20 41 | 74 61 72 69 73 20 61 72 |y.when A|taris ar|
|00000770| 65 20 6e 6f 20 6d 6f 72 | 65 20 61 6e 64 20 49 20 |e no mor|e and I |
|00000780| 68 61 76 65 20 74 6f 20 | 6d 6f 76 65 20 6d 79 20 |have to |move my |
|00000790| 73 6f 75 72 63 65 20 74 | 6f 20 61 0a 43 6c 6f 77 |source t|o a.Clow|
|000007a0| 6e 2f 50 6f 77 65 72 50 | 43 2f 55 6e 69 78 20 62 |n/PowerP|C/Unix b|
|000007b0| 6f 78 2e 2e 2e 0a 5c 65 | 6e 64 7b 68 65 72 65 73 |ox....\e|nd{heres|
|000007c0| 79 7d 0a 0a 53 74 65 76 | 65 6e 0a 0a             |y}..Stev|en..    |
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