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@jonhoo
jonhoo / README.md
Last active July 19, 2021 10:49
Distributed RWMutex in Go
@iamralch
iamralch / sshtunnel.go
Last active August 21, 2024 05:15
SSH tunnelling in Golang
package main
import (
"log"
"bufio"
"time"
"os"
"fmt"
"io"
"net"
@17twenty
17twenty / GoWithC.go
Last active July 11, 2016 04:29
Cross Compiling and Language Interop oh my!
package main
import (
"./binding"
"fmt"
)
func main() {
binding.PrintHello()
binding.Seed(1)
fmt.Println(binding.Random())

Problems & Solutions for Interaction Between C and Go

At Vimeo, on the transcoding team, we work a lot with Go, and a lot with C, for various tasks such as media ingest. This means we use CGO quite extensively, and consequently, have run into bits that are perhaps not very well documented, if at all. Below is my effort to document some of the problems we've run into, and how we fixed or worked around them.

Many of these are obviously wrong in retrospect, but hindsight is 20/20, and these problems do exist in many codebases currently.

Some are definitely ugly, and I much welcome better solutions! Tweet me at @daemon404 if you have any, or have your own CGO story/tips, please! I'd love to learn of them.

Table of Contents

@awalterschulze
awalterschulze / Makefile
Created February 2, 2017 13:27
golang: How to check whether a function is inlined
all:
make build
make objdump
build:
go build -gcflags -m main.go
objdump:
go tool objdump -s "main.main" main | grep CALL
@grihabor
grihabor / Makefile.version
Last active April 22, 2025 15:01
Makefile to use for incremental semantic versioning
MAKE := make --no-print-directory
DESCRIBE := $(shell git describe --match "v*" --always --tags)
DESCRIBE_PARTS := $(subst -, ,$(DESCRIBE))
VERSION_TAG := $(word 1,$(DESCRIBE_PARTS))
COMMITS_SINCE_TAG := $(word 2,$(DESCRIBE_PARTS))
VERSION := $(subst v,,$(VERSION_TAG))
VERSION_PARTS := $(subst ., ,$(VERSION))
@jzelinskie
jzelinskie / config
Last active January 18, 2024 19:23
generate a knot-resolver (kresd) blacklist.rpz from pihole sources
-- Refer to manual: https://knot-resolver.readthedocs.io/en/latest/daemon.html#configuration
-- Listen on all interfaces (localhost would not work in Docker)
net.listen('0.0.0.0')
net.listen('0.0.0.0', 853, {tls=true})
-- Auto-maintain root TA
trust_anchors.file = '/data/root.keys'
-- Load Useful modules
@LOZORD
LOZORD / json_test.go
Created January 12, 2020 17:14
An example of using a native JSON-friendly Go struct as a type and input in a CEL program.
package test
import (
"bytes"
"encoding/json"
"testing"
"github.com/golang/protobuf/jsonpb"
structpb "github.com/golang/protobuf/ptypes/struct"
"github.com/google/cel-go/cel"
@StefanPetrick
StefanPetrick / basic_render_engine_v01
Last active October 2, 2025 04:18
Demo code for Stefans FastLED tutorial #2. It's a 2d render engine for procedural animations v0.1
// Polar basics demo for the
// FastLED Podcast #2
// https://www.youtube.com/watch?v=KKjFRZFBUrQ
//
// VO.1 preview version
// by Stefan Petrick 2023
// This code is licenced under a
// Creative Commons Attribution
// License CC BY-NC 3.0