spinlock based semaphore in go this package is still experimental. use at your own risk.
this package implements a binary semphore, using spinlock and a counting semaphore using go channels. It is based on analyzing various go opensource libraries, listed in doc.go.
- benchmark results (go version
go1.15 linux/amd64)
Running tool: /home/gitpod/go/bin/go test -benchmem -run=^$ github.com/da-moon/go-semaphore -bench . -v
goos: linux
goarch: amd64
pkg: github.com/da-moon/go-semaphore
BenchmarkBinarySemaphore
BenchmarkBinarySemaphore/1
BenchmarkBinarySemaphore/1-16 32325340 37.2 ns/op 0 B/op 0 allocs/op
BenchmarkBinarySemaphore/2
BenchmarkBinarySemaphore/2-16 26361247 39.9 ns/op 0 B/op 0 allocs/op
BenchmarkBinarySemaphore/4
BenchmarkBinarySemaphore/4-16 30186558 37.6 ns/op 0 B/op 0 allocs/op
BenchmarkBinarySemaphore/8
BenchmarkBinarySemaphore/8-16 33298560 38.9 ns/op 0 B/op 0 allocs/op
BenchmarkBinarySemaphore/16
BenchmarkBinarySemaphore/16-16 25791638 41.9 ns/op 0 B/op 0 allocs/op
BenchmarkMutex
BenchmarkMutex/1
BenchmarkMutex/1-16 15966688 78.3 ns/op 0 B/op 0 allocs/op
BenchmarkMutex/2
BenchmarkMutex/2-16 13372855 83.8 ns/op 0 B/op 0 allocs/op
BenchmarkMutex/4
BenchmarkMutex/4-16 19589612 85.5 ns/op 0 B/op 0 allocs/op
BenchmarkMutex/8
BenchmarkMutex/8-16 12234087 96.7 ns/op 0 B/op 0 allocs/op
BenchmarkMutex/16
BenchmarkMutex/16-16 11732821 89.3 ns/op 0 B/op 0 allocs/op
BenchmarkSlowSemaphorePermitpool200
BenchmarkSlowSemaphorePermitpool200-16 100 10524237 ns/op 886794 B/op 110634 allocs/op
BenchmarkSemaphore200
BenchmarkSemaphore200-16 272 4087844 ns/op 1184 B/op 3 allocs/op
BenchmarkSlowSemaphorePermitpool500
BenchmarkSlowSemaphorePermitpool500-16 16 75324527 ns/op 5827348 B/op 726940 allocs/op
BenchmarkSemaphore500
BenchmarkSemaphore500-16 43 25890357 ns/op 1434 B/op 3 allocs/op
BenchmarkSlowSemaphorePermitpool1000
BenchmarkSlowSemaphorePermitpool1000-16 3 339437950 ns/op 24780800 B/op 3090996 allocs/op
BenchmarkSemaphore1000
BenchmarkSemaphore1000-16 10 106566390 ns/op 2720 B/op 7 allocs/op
BenchmarkSlowSemaphorePermitpool3000
BenchmarkSlowSemaphorePermitpool3000-16 1 3106959920 ns/op 214735584 B/op 26684397 allocs/op
BenchmarkSemaphore3000
BenchmarkSemaphore3000-16 2 875797314 ns/op 1184 B/op 3 allocs/op