pyf fixed buffer size

The Something Awful Forums > Discussion > Serious Hardware/Software Crap > YOSPOS > pyf fixed buffer size

Gazpacho: Jun 18, 2004; by Fluffdaddy; Slippery Tilde

you know how it goes. you're 6 subroutines deep and suddenly you need a buffer. what do you do?

for me it depends on the kind of buffer. If I need an array of objects, I use 16. double digits, power of 2. seems reasonable enough.

if it's for a string, I use MAX_PATH. don't worry, I add a definition for non-Windows platforms. (the string does not have to be a file path.)

if I need a byte array, I grab 64kB. some people might use 1MB but that seems wasteful imo

# ? Jun 27, 2017 01:34

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# ? Apr 23, 2024 18:21

The Management: Jan 2, 2010; sup, bitch?

CLINE_SIZE or PAGE_SIZE like a pro

# ? Jun 27, 2017 01:43

akadajet: Sep 14, 2003

Gazpacho posted:

you know how it goes. you're 6 subroutines deep and suddenly you need a buffer. what do you do?

code:


var buffer = [];

# ? Jun 27, 2017 01:45

Asymmetric POSTer: Aug 17, 2005

# ? Jun 27, 2017 01:49

akadajet: Sep 14, 2003

mishaq posted:

gah, every time I need to take a piss she shows up

# ? Jun 27, 2017 01:50

Silver Alicorn: Mar 30, 2008; 𝓪 𝓻𝓮𝓭 𝓹𝓪𝓷𝓭𝓪 𝓲𝓼 𝓪 𝓬𝓾𝓻𝓲𝓸𝓾𝓼 𝓼𝓸𝓻𝓽 𝓸𝓯 𝓬𝓻𝓮𝓪𝓽𝓾𝓻𝓮

14kb

# ? Jun 27, 2017 01:50

Doc Block: Apr 15, 2003; Fun Shoe

i'm not a caveman so i avoid using c arrays directly

std::vector (or std::deque :clint:

) if i'm in the sewer writing code for the heathen platforms, or NSArray or NSMutableArray or NSData or whatever if I'm in a luxury condo writing code for the Good Operation Systems

# ? Jun 27, 2017 03:03

pram: Jun 10, 2001

mishaq posted:

bathroom zamboni? lol

# ? Jun 27, 2017 03:19

Farmer Crack-Ass: Jan 2, 2001; this is me posting irl

akadajet posted:

gah, every time I need to take a piss she shows up

she knows :tinfoil:

# ? Jun 27, 2017 05:24

Sweevo: Nov 8, 2007; i sometimes throw cables away

i mean straight into the bin without spending 10+ years in the box of might-come-in-handy-someday first

im a fucking monster

you should always choose either a power of two, or a power of two -1. that way anyone who looks will assume that theres some technical reason why you chose that size and you will look good

# ? Jun 27, 2017 11:11

Sweeper: Nov 29, 2007; The Joe Buck of Posting; Dinosaur Gum

Sweevo posted:

you should always choose either a power of two, or a power of two -1. that way anyone who looks will assume that theres some technical reason why you chose that size and you will look good

no you have to pick arbitrary numbers that make it look like you did a calculation

# ? Jun 27, 2017 12:13

Captain Foo: May 11, 2004; we vibin'
we slidin'
we breathin'
we dyin'

lol if you don't use a 69-byte buffer

# ? Jun 27, 2017 15:02

Sweevo: Nov 8, 2007; i sometimes throw cables away

i mean straight into the bin without spending 10+ years in the box of might-come-in-handy-someday first

im a fucking monster

219, 420, 1137, and 80085 are also acceptable

# ? Jun 27, 2017 15:20

Silver Alicorn: Mar 30, 2008; 𝓪 𝓻𝓮𝓭 𝓹𝓪𝓷𝓭𝓪 𝓲𝓼 𝓪 𝓬𝓾𝓻𝓲𝓸𝓾𝓼 𝓼𝓸𝓻𝓽 𝓸𝓯 𝓬𝓻𝓮𝓪𝓽𝓾𝓻𝓮

1000 bytes

# ? Jun 27, 2017 15:28

Silver Alicorn: Mar 30, 2008; 𝓪 𝓻𝓮𝓭 𝓹𝓪𝓷𝓭𝓪 𝓲𝓼 𝓪 𝓬𝓾𝓻𝓲𝓸𝓾𝓼 𝓼𝓸𝓻𝓽 𝓸𝓯 𝓬𝓻𝓮𝓪𝓽𝓾𝓻𝓮

what kind of buffer sizes do you get on a 36 bit computer

# ? Jun 27, 2017 15:29

Captain Foo: May 11, 2004; we vibin'
we slidin'
we breathin'
we dyin'

Sweevo posted:

1137

turn in your badge, you're fired

# ? Jun 27, 2017 15:29

Sweevo: Nov 8, 2007; i sometimes throw cables away

i mean straight into the bin without spending 10+ years in the box of might-come-in-handy-someday first

im a fucking monster

i was honouring the entrants of the LIET minority language song contest

thats my story and i'm sticking to it

# ? Jun 27, 2017 15:51

LP0 ON FIRE: Jan 25, 2006; _{beep boop}

in swift or objective c i never really have to worry about this, but maybe an NSMutableArray/Dictionary

# ? Jun 27, 2017 16:00

CRIP EATIN BREAD: Jun 24, 2002; Hey stop worrying bout my acting bitch, and worry about your WACK ass music. In the mean time... Eat a hot bowl of Dicks! Ice T; Soiled Meat

i use my bespoke fixed page stack allocating buffer if it doesn't need to be returned to the caller.

otherwise its malloc(PAGE_SIZE)

# ? Jun 27, 2017 16:18

Deep Dish Fuckfest: Sep 6, 2006; Advanced
Computer Touching; Toilet Rascal

i just put stuff at random memory addresses and trust in the providence of the good lord that everything will be fine

worst case scenario there's a crash and the load gets redirected to other instances

it also confuses the hell out of hackers so that's good for security too

# ? Jun 27, 2017 16:29

suffix: Jul 27, 2013; Wheeee!

code:

/* If you get random crashes try increasing this */
//static char tmpbuf[512];
//static char tmpbuf[530];
//static char tmpbuf[550];
// this seems to work DON'T TOUCH
//static char tmpbuf[566];
static char tmpbuf[512];

# ? Jul 1, 2017 20:50

Plorkyeran: Mar 22, 2007; To Escape The Shackles Of The Old Forums, We Must Reject The Tribal Negativity He Endorsed

Sweevo posted:

you should always choose either a power of two, or a power of two -1. that way anyone who looks will assume that theres some technical reason why you chose that size and you will look good

power of two plus one to maximize wasted space

# ? Jul 1, 2017 21:07

Jimmy Carter: Nov 3, 2005; THIS MOTHERDUCKER
FLIES IN STYLE

the field for team abbreviation in ESPN Fantasy Baseball only supports 4 bytes and is homophobic
💑 sticks
👨‍❤️‍👨 gets changed to 👱

# ? Jul 1, 2017 23:51

Sagebrush: Feb 26, 2012

I'm currently using a 29-byte buffer because the data I'm handling has a fixed 3-byte preamble and then goes into a register that's 32 bytes wide. Feels pretty good op

# ? Jul 2, 2017 00:15

pram: Jun 10, 2001

suffix posted:

code:

/* If you get random crashes try increasing this */
//static char tmpbuf[512];
//static char tmpbuf[530];
//static char tmpbuf[550];
// this seems to work DON'T TOUCH
//static char tmpbuf[566];
static char tmpbuf[512];

lol

# ? Jul 2, 2017 00:44

Sagebrush: Feb 26, 2012

quote:

When I worked at Planet Moon, we made an educational game for the Gameboy DS called BrainQuest. The DS only has 4MB of RAM, and toward the end of the project, we were running right up against that limit. When the final assets came in and were added to the package, we were just over the 4MB limit. One of the engineers grinned and walked over to his computer. He opened up main.cpp and commented out the following line:
code:
unsigned char insurance[10240];

# ? Jul 2, 2017 00:46

The Management: Jan 2, 2010; sup, bitch?

suffix posted:

code:


/* If you get random crashes try increasing this */
//static char tmpbuf[512];
//static char tmpbuf[530];
//static char tmpbuf[550];
// this seems to work DON'T TOUCH
//static char tmpbuf[566];
static char tmpbuf[512];

murder this person

# ? Jul 3, 2017 16:11

Bloody: Mar 3, 2013

256

# ? Jul 9, 2017 15:21

carry on then: Jul 10, 2010; by VideoGames
(and can't post for 10 years!)

LRECL=80, op

# ? Jul 9, 2017 16:21

akadajet: Sep 14, 2003

suffix posted:

code:


/* If you get random crashes try increasing this */
//static char tmpbuf[512];
//static char tmpbuf[530];
//static char tmpbuf[550];
// this seems to work DON'T TOUCH
//static char tmpbuf[566];
static char tmpbuf[512];

# ? Jul 9, 2017 16:23

ADINSX: Sep 9, 2003; Wanna run with my crew huh? Rule cyberspace and crunch numbers like I do?

akadajet posted:

gah, every time I need to take a piss she shows up

if you weren't such a messy pisser she wouldn't need a zamboni to clean up after you

# ? Jul 9, 2017 17:07

ADINSX: Sep 9, 2003; Wanna run with my crew huh? Rule cyberspace and crunch numbers like I do?

also the answer is whatever the stackoverflow example code I find to solve my problem is using

# ? Jul 9, 2017 17:08

Agile Vector: May 21, 2007; scrum bored

ADINSX posted:

if you weren't such a messy pisser she wouldn't need a zamboni to clean up after you

the proper term is maamboni

# ? Jul 9, 2017 19:54

TOPS-420: Feb 13, 2012

code:


char answer[80];
puts("Name (max one line):");
gets(answer);

# ? Jul 9, 2017 20:51

Poopernickel: Oct 28, 2005; electricity bad; Fun Shoe

i use a buffer size of one dickabyte

being a programmer, of course, one dickabyte is

# ? Jul 10, 2017 15:50

Captain Foo: May 11, 2004; we vibin'
we slidin'
we breathin'
we dyin'

Poopernickel posted:

i use a buffer size of one dickabyte

being a programmer, of course, one dickabyte is

whatever u fuckin typdef it to be

# ? Jul 10, 2017 17:51

Sweevo: Nov 8, 2007; i sometimes throw cables away

i mean straight into the bin without spending 10+ years in the box of might-come-in-handy-someday first

im a fucking monster

you claim it's eight but it's actually 4.5 tops

# ? Jul 10, 2017 18:32

jre: Sep 2, 2011; To the cloud ?

Sweevo posted:

you claim it's eight but it's actually 4.5 tops

# ? Jul 10, 2017 20:48

burning swine: May 26, 2004

use whatever size you want just be polite about it

code:

	char buffer[1024];
	//thank you computer, keep this for urself
	malloc(1);

always tip the dealer

# ? Jul 10, 2017 21:09

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# ? Apr 23, 2024 18:21

gonadic io: Feb 16, 2011; >>=

always be heaping

# ? Jul 10, 2017 23:08

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