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TCP Echo Server

# TCP Echo Server > socket/bind/listen/accept๋กœ ์—์ฝ” ์„œ๋ฒ„ ๊ตฌํ˜„ ## ํ•™์Šต ๋ชฉํ‘œ - BSD ์†Œ์ผ“ API์˜ ํ๋ฆ„์„ ์™„์„ฑํ•œ๋‹ค - ์—์ฝ” ์„œ๋ฒ„(๋ฐ›์€ ๋ฐ์ดํ„ฐ๋ฅผ ๊ทธ๋Œ€๋กœ ๋Œ๋ ค๋ณด๋‚ด๋Š” ์„œ๋ฒ„...
#c #c-lang #advanced
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Compiler Flags

# Compiler Flags > -O0/-O2/-O3, -Wall, ์ธ๋ผ์ธ ํ•จ์ˆ˜, LTO ## ํ•™์Šต ๋ชฉํ‘œ - GCC ์ตœ์ ํ™” ๋ ˆ๋ฒจ(-O0 ~ -O3)์˜ ์ฐจ์ด๋ฅผ ์ดํ•ดํ•œ๋‹ค - ๊ฒฝ๊ณ  ํ”Œ๋ž˜๊ทธ์™€ ๋””๋ฒ„๊ทธ ์˜ต์…˜์„ ํ™œ์šฉํ•œ๋‹ค...
#c #c-lang #advanced
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Cache Locality

# Cache Locality > ์บ์‹œ ํžˆํŠธ/๋ฏธ์Šค, ๋ฉ”๋ชจ๋ฆฌ ์ ‘๊ทผ ํŒจํ„ด ์ตœ์ ํ™” ## ํ•™์Šต ๋ชฉํ‘œ - CPU ์บ์‹œ์˜ ๋™์ž‘ ์›๋ฆฌ์™€ ๊ณ„์ธต ๊ตฌ์กฐ๋ฅผ ์ดํ•ดํ•œ๋‹ค - ์บ์‹œ ํžˆํŠธ/๋ฏธ์Šค๊ฐ€ ์„ฑ๋Šฅ์— ๋ฏธ์น˜๋Š” ์˜ํ–ฅ์„ ํŒŒ์•…ํ•œ๋‹ค - ๋ฉ”๋ชจ๋ฆฌ ...
#c #c-lang #advanced
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Profiling

# Profiling > gprof / perf ์‚ฌ์šฉ๋ฒ•, ๋ณ‘๋ชฉ ๊ตฌ๊ฐ„ ํƒ์ง€ ## ํ•™์Šต ๋ชฉํ‘œ - `gprof`์™€ `perf`๋ฅผ ์‚ฌ์šฉํ•ด ํ”„๋กœ๊ทธ๋žจ ์„ฑ๋Šฅ์„ ๋ถ„์„ํ•œ๋‹ค - ๋ณ‘๋ชฉ ๊ตฌ๊ฐ„์„ ํƒ์ง€ํ•˜๊ณ  ์ตœ์ ํ™” ์šฐ์„ ์ˆœ์œ„๋ฅผ ๊ฒฐ์ •ํ•œ๋‹ค ...
#c #c-lang #advanced
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OOP in C

# OOP in C > ๊ตฌ์กฐ์ฒด+ํ•จ์ˆ˜ ํฌ์ธํ„ฐ๋กœ ๊ฐ์ฒด์ง€ํ–ฅ ํ‰๋‚ด๋‚ด๊ธฐ ## ํ•™์Šต ๋ชฉํ‘œ - ๊ตฌ์กฐ์ฒด์™€ ํ•จ์ˆ˜ ํฌ์ธํ„ฐ๋กœ ํด๋ž˜์Šค ๊ฐœ๋…์„ ๊ตฌํ˜„ํ•œ๋‹ค - ์บก์Аํ™”, ์ƒ์†, ๋‹คํ˜•์„ฑ์„ C๋กœ ๋ชจ์‚ฌํ•˜๋Š” ํŒจํ„ด์„ ์ตํžŒ๋‹ค ## ๋‚ด์šฉ ### ...
#c #c-lang #advanced
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Callback Pattern

# Callback Pattern > ์ด๋ฒคํŠธ ํ•ธ๋“ค๋Ÿฌ, ์ฝœ๋ฐฑ ๋“ฑ๋กยทํ˜ธ์ถœ ๊ตฌ์กฐ ์„ค๊ณ„ ## ํ•™์Šต ๋ชฉํ‘œ - ์ฝœ๋ฐฑ ํ•จ์ˆ˜์˜ ๊ฐœ๋…๊ณผ ๋“ฑ๋กยทํ˜ธ์ถœ ํ๋ฆ„์„ ์ดํ•ดํ•œ๋‹ค - ์ด๋ฒคํŠธ ํ•ธ๋“ค๋Ÿฌ ์‹œ์Šคํ…œ์„ ์ง์ ‘ ์„ค๊ณ„ํ•˜๊ณ  ๊ตฌํ˜„ํ•œ๋‹ค - `voi...
#c #c-lang #advanced
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State Machine

# State Machine > ์ƒํƒœ ํ…Œ์ด๋ธ”, enum+ํ•จ์ˆ˜ ํฌ์ธํ„ฐ๋กœ FSM ๊ตฌํ˜„ ## ํ•™์Šต ๋ชฉํ‘œ - ์œ ํ•œ ์ƒํƒœ ๋จธ์‹ (FSM)์˜ ๊ฐœ๋…๊ณผ ๊ตฌ์„ฑ ์š”์†Œ๋ฅผ ์ดํ•ดํ•œ๋‹ค - `enum`๊ณผ ํ•จ์ˆ˜ ํฌ์ธํ„ฐ ํ…Œ์ด๋ธ”๋กœ FSM์„ ๊ตฌ...
#c #c-lang #advanced
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Mini Shell

# Mini Shell > fork/exec/wait์œผ๋กœ ๋ช…๋ น์–ด ํŒŒ์‹ฑยท์‹คํ–‰ํ•˜๋Š” ๋ฏธ๋‹ˆ ์‰˜ ## ํ•™์Šต ๋ชฉํ‘œ - ์ง€๊ธˆ๊นŒ์ง€ ๋ฐฐ์šด ํ”„๋กœ์„ธ์Šค, ์‹œ์Šคํ…œ ํ”„๋กœ๊ทธ๋ž˜๋ฐ ๊ฐœ๋…์„ ์ข…ํ•ฉ ์ ์šฉํ•œ๋‹ค - ์ž…๋ ฅ ํŒŒ์‹ฑ โ†’ fork โ†’ exe...
#c #c-lang #advanced
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Process

# Process > fork/exec/wait, ํ”„๋กœ์„ธ์Šค ์ƒ์„ฑยท์ข…๋ฃŒ ํ๋ฆ„ ## ํ•™์Šต ๋ชฉํ‘œ - `fork()`๋กœ ์ž์‹ ํ”„๋กœ์„ธ์Šค๋ฅผ ์ƒ์„ฑํ•˜๋Š” ๋ฐฉ๋ฒ•์„ ์ดํ•ดํ•œ๋‹ค - `exec()` ๊ณ„์—ด ํ•จ์ˆ˜๋กœ ํ”„๋กœ์„ธ์Šค ์ด๋ฏธ์ง€๋ฅผ ๊ต์ฒด...
#c #c-lang #advanced
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Signal

# Signal > signal/sigaction, SIGINTยทSIGTERM ์ฒ˜๋ฆฌ ## ํ•™์Šต ๋ชฉํ‘œ - ์œ ๋‹‰์Šค ์‹œ๊ทธ๋„์˜ ๊ฐœ๋…๊ณผ ๋™์ž‘ ๋ฐฉ์‹์„ ์ดํ•ดํ•œ๋‹ค - `signal()`๊ณผ `sigaction()`์œผ๋กœ ํ•ธ๋“ค๋Ÿฌ...
#c #c-lang #advanced

๐ŸŒŠ Knowledge Flows

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c-lang-advanced

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c-lang-intermediate

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c-lang-beginner

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nullvuild CLI Guide

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nullvuild REST API v1 Reference

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/nullvuild-official

# nullvuild-official nullvuild is now open in beta. Welcome โ€” feel free to create nodes, compose flows, and start hubs.